Abstract: A secondary battery according to an embodiment includes a container having a pouring hole through which an electrolyte is poured, and housing the electrolyte, poured through the pouring hole, together with an electrode body; and a sealing lid fixed to the container and closing the pouring hole. The container has a plurality of grooves extending in parallel along the outer edge of the pouring hole, in a predetermined region that surrounds the periphery of the pouring hole, and the sealing lid is provided on the plurality of grooves in such a manner as to close the pouring hole and is fixed to the container.

Abstract: A method for making a thin film lithium ion battery is provided. A cathode material layer and an anode material layer are provided. A cathode current collector is formed on a surface of the cathode material layer to obtain a cathode electrode. The cathode current collector includes a graphene layer. An anode current collector is applied on a surface of the anode material layer to obtain an anode electrode. A solid electrolyte layer is applied between the cathode electrode and the anode electrode, thereby forming a battery cell. Then at least one battery cell is encapsulated in an external encapsulating shell.

Abstract: A method for making lithium ion battery is provided. A cathode material layer and an anode material layer are provided. A first graphene layer is formed on a surface of the cathode material layer to obtain a cathode electrode. A second graphene layer is formed on a surface of the anode material layer to obtain an anode electrode. A separator is applied between the cathode electrode and the anode electrode to form a battery cell. At least one battery cell is then encapsulated in an external encapsulating shell, and an electrolyte solution is injected into the external encapsulating shell.

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode containing a titanium-containing oxide, and a nonaqueous electrolyte. The nonaqueous electrolyte contains carbon monoxide and at least one selected from difluorophosphoric acid and monofluorophosphoric acid. The ratio of the mass concentration of carbon monoxide to the sum of the mass concentrations of difluorophosphoric acid and monofluorophosphoric acid is in the range of 0.1 to 5%.

Abstract: Provided is a method of manufacturing a lithium battery. The method of manufacturing the lithium battery includes providing a anode part including a anode collector, a anode layer, and a anode electrolyte layer which are successively stacked on a first pouch film, providing a cathode part including a cathode collector, a cathode layer, and a cathode electrolyte layer which are successively stacked on a second pouch film, and sealing the first and second pouch films to couple the anode part to the cathode part.

Abstract: A secondary battery includes an electrode assembly having an electrode tab; an electrode lead attached to the electrode tab and having at least one lead hole; a pouch case for accommodating the electrode assembly so that the electrode lead is drawn out; and a sealing tape interposed between the electrode lead and the inner surface of the pouch case and having a venting pattern portion formed at a region corresponding to the lead hole. Therefore, when gas is generated inside a pouch case of a secondary battery due to an abnormal circumstance, for example when an overcurrent flows at the secondary battery since a protective circuit does not operate normally, a sealed state of the pouch case is rapidly released, thereby ensuring the safety of the secondary battery in use.

Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly including a separator disposed between a cathode and an anode is mounted in a battery case, wherein the battery case includes an upper case and a lower case, the upper case and/or the lower case being provided with a receiving part, in which the electrode assembly is mounted, the electrode assembly includes a plurality of electrodes or unit cells stacked in a height direction on the basis of a plane, two or more of the electrodes or the unit cells having different planar sizes, and the receiving part of the battery case is provided with stair-like steps corresponding to an external appearance of the electrode assembly.

Abstract: This invention discloses methods and apparatus to form energization elements upon electrical interconnects on Three-dimensional Surfaces. In some embodiments, the present invention includes incorporating the Three-dimensional Surfaces with electrical interconnects and energization elements into an insert for incorporation into ophthalmic Lenses. In some embodiments, the formed insert may be directly used as an ophthalmic Lens.

Abstract: A battery includes: an electricity-generating element; an exterior; an external terminal member; a current-collecting terminal member having a first end which is connected to the electricity-generating element and a second end, which extends outward of the exterior; and a platy connection member that, outside the exterior, interconnects the current-collecting terminal member and external terminal member. In the welding between the connection member and an outer peripheral side end portion of a swaged portion in which the second end of the current-collecting terminal member has been swaged toward an insertion hole of the connection member, an acute angle between a connecting line connecting the weld portion to a center of the second end and a longitudinally extending center line of the lid member is greater than or equal to 45 degrees. A production method for the battery and a battery production-purposed mask are also provided.

Abstract: Methods and apparatus to form energization elements upon electrical interconnects on three-dimensional surfaces are described. In some embodiments, the present invention includes incorporating the three-dimensional surfaces with electrical interconnects and energization elements into an insert for incorporation into ophthalmic lenses. In some embodiments, the formed insert may be directly used as an ophthalmic lens.

Abstract: A stress relief body is described for maintaining a safe bend radius on the seal of a pouch cell to prevent crimping of the cell covers and other damage. When the seal area of the cell pouch is folded to reduce the overall size of the resulting battery pack the stress relief body is integrated with the pouch cell to maintain the safe bend radius.

Abstract: Provided are: a solid battery which has been sealed in an exterior material under a reduced pressure, wherein gas in the exterior material can be fully removed when depressurizing the inside of the exterior material; and a method of manufacturing the solid battery, the solid battery having a single cell having: a laminated body having a cathode layer, an anode layer, and an electrolyte layer disposed between the cathode layer and the anode layer; an insulating part disposed on an outer perimeter of the laminated body in a cross-sectional view of the laminated body in a direction orthogonal to a lamination direction thereof, and a pair of current collectors sandwiching the laminated body and the insulating part, wherein the single cell has been sealed in an exterior material under a reduced pressure; and the insulating part has vent holes.

Abstract: A feed-through, in particular a feed-through which passes through part of a housing, in particular a battery housing, for example made of metal, in particular light metal, for example aluminum, an aluminum alloy, AlSiC, magnesium, an magnesium alloy, titanium, a titanium alloy, steel, stainless steel or high-grade steel. The housing part has at least one opening through which at least one conductor, in particular an essentially pin-shaped conductor, embedded in a glass or glass ceramic material, is guided. The base body is, for example, an essentially annular-shaped base body.

Abstract: The disclosed embodiments relate to the manufacture of a battery cell. The battery cell includes a set of layers including a cathode and an anode. The cathode includes a cathode substrate with a thickness in the range of 8-10 microns and a cathode active material. The anode includes an anode substrate with a thickness in the range of 4-6 microns and an anode active material. The cathode active material is coated on the cathode substrate at a rate of 2 mm/min to 3 mm/min, and the anode active material is coated on the anode substrate at a rate of 2 mm/min to 3.8 mm/min. Such substrate thicknesses and coating speeds may increase the energy density of the battery cell over that of a conventional battery cell with thicker cathode and anode substrates while avoiding manufacturing defects associated with the use of thinner substrates in battery cells.

Abstract: A material includes a first lithium metal oxide (LMO) component formed using a spray-dry technique and a second LMO component formed using a co-precipitation technique. In particular, the LMO components may include lithium nickel manganese cobalt oxide (NMC). The material may further include a binder and a conductive component.

Abstract: The disclosed embodiments provide a battery cell. The battery cell includes a set of layers including a cathode with an active coating, a separator, and an anode with an active coating. The battery cell also includes a pouch enclosing the layers, wherein the pouch is flexible. The resistance of the battery cell to mechanical stress may be improved by removing material from one or more of the layers to form one or more apertures within the battery cell and placing a mechanical support in each of the apertures.

Abstract: There is provided manufacturing method of battery comprising adhering process (S1) to adhere fluorescent material (leakage indicator including fluorescein) which emits fluorescence in response to predetermined light (ultraviolet radiation) irradiated under condition that electrolyte exists, to at least one portion of a surface on a battery case, and leakage detecting process (S2 through S9) to detect presence/absence of electrolyte leakage with fluorescence which an adhered portion emits in response to the predetermined light (ultraviolet radiation) irradiated on at least the adhered portion which has adhesion of the fluorescent material (leakage indicator including fluorescein), out of the surface on the battery case.

Abstract: The invention relates to a method for sealing an impregnation opening of an energy storage assembly including a housing, the opening (24) being provided in one of the walls of the housing and having an outer aperture (24E) and an inner aperture (24I), the method comprising: a step of inserting, into the opening through the outer aperture, at least one end portion of a head of a tool that is rotated in a direction corresponding to the axis of the opening, in order to heat an area of the housing in the vicinity of the opening, the head including at least a first cross-section at the base thereof, and a second cross-section that is smaller than the first cross-section at the end thereof; once the area is heated, a step of translating the tool in the direction of the inner aperture so as to move the material in the direction of the inner aperture and to seal the opening by means of the resolidification of the material.

Abstract: Embodiments are described in terms of selective methods of sealing separators and jellyroll electrode assemblies and cells made using such methods. More particularly, methods of selectively heat sealing separators to encapsulate one of two electrodes for nickel-zinc rechargeable cells having jellyroll assemblies are described. Selective heat sealing may be applied to both ends of a jellyroll electrode assembly in order to selectively seal one of two electrodes on each end of the jellyroll.

Abstract: A battery includes a first electrode plate, a second electrode plate, a separator interposed between the first and second electrode plates, a closed-end cylindrical metal case accommodating these three elements, and a sealing member sealing an opening of the metal case with an insulating member interposed therebetween. The first and second electrode plates are wound with the separator interposed therebetween to form a wound electrode group. A center axis portion of the wound electrode group is substantially the same as a center axis of a cylinder of the metal case, and contains no power-generating element. A first current collector lead coupled to the first electrode plate extends toward the opening of the metal case, and joined to an inner sidewall surface of the metal case. A second current collector lead coupled to the second electrode plate extends toward the opening of the metal case, and joined to the sealing member.

Abstract: According to one embodiment, a non-aqueous electrolyte secondary battery is provided. A negative electrode layer in the battery includes a lithium titanium oxide, and has first region(s) and a second region on a surface. The first region(s) is/are surrounded by the second region and have a lower lithium concentration. The second region has a higher lithium concentration. The negative electrode layer satisfies the formula (I): T2<T1 (I). T1 is a proportion of tetravalent titanium atoms in titanium atoms in the lithium titanium oxide comprised in the first region. T2 is a proportion of tetravalent titanium atoms in titanium atoms in the lithium titanium oxide comprised in the second region.

Abstract: An example includes apparatus including a non-thin-film battery, that can include an implantable housing, electronics disposed in the implantable housing, and a battery disposed in the implantable housing, the battery comprising: a plurality of cells electrically connected to one another, with at least one cell including a stack including at least one substantially planar anode having a thickness greater than 1 micrometer and at least one substantially planar cathode having a thickness greater than 1 micrometer, and a cell housing enclosing the stack of substantially planar anodes and cathodes and displacing less than approximately 0.024 cubic centimeters, wherein the plurality of cells are interconnected in at least one of series and parallel, and terminals interconnecting the battery and the electronics.

Abstract: Disclosed is a method for producing a secondary battery in which an electrode assembly comprising a cathode, an anode and a separator interposed between the cathode and the anode is accommodated in a battery case, the method comprising inserting the electrode assembly into the battery case, injecting an electrolyte into the battery case accommodating the electrode assembly to obtain a secondary battery, storing the secondary battery at a SOC of 1 to 20 for 3 hours to 10 days, removing gas present in the secondary battery, and sealing the battery case, wherein the anode comprises lithium titanium oxide (LTO) represented by the following Formula 1 as an anode active material: LiaTibO4?cAc??(1) wherein a, b and c are determined according to an oxidation number of M? within ranges of 0.5?a?3, 1?b?2.5, and 0?c<0.2; and A is at least one monovalent or bivalent anion. Disclosed is also a secondary battery produced by the method.

Abstract: Method for producing electric cells for electrochemical energy storage devices, the method of production comprising the following steps: (S1a) feeding an anode strip, (S1b) feeding a cathode strip (20), (S1c) feeding a separator strip (30), preferably two separator strips, (S3a) stamping out an anode element from the anode strip, (S3b) stamping out a cathode element from the cathode strip (20), (S5) cutting the separator strip (30), preferably the two separator strips, into separator elements, (S6a) applying an anode element to a first separator element to form an anode-separator element, (S6b) applying a cathode element to a second separator element to form a cathode-separator element, and (S7) stacking an anode number of anode-separator elements and a cathode number of cathode-separator elements to form an anode-separator-and-cathode-separator stack.

Abstract: Provided are a pouch type secondary battery capable of preventing corrosion of a metal layer due to exposure of the metal layer to the outside at a distal end of a case thereof, and a method for manufacturing the same.

Abstract: A battery (100) provided by the present invention includes an electrode body (80) having a positive electrode and a negative electrode (84), a bottomed battery case (10) for holding the electrode body (80), and a current collecting plate (20) that connects the battery case (10) with either the positive electrode or the negative electrode of the electrode body. A part of the current collecting plate (20) and a bottom part (16) of the battery case (10) are fixed to each other by welding, and a sealed structure (40) that surrounds a weld (30) composed of a portion that has been welded is formed at the periphery of the weld (30).

Abstract: A flat primary battery capable of enhancing the productivity and a method for manufacturing the same are disclosed. The flat primary battery is a flat alkaline primary battery including a positive electrode mixture, a negative electrode mixture, and an electrolytic solution in a can, wherein the negative electrode mixture includes a zinc powder or a zinc alloy powder and an insulating powder of a non-metal which does not react with an electrolytic solution and which has an average particle diameter of 110 ?m or more, the value of which is from 60% to 140% of an average particle diameter of the zinc powder or zinc alloy powder.

Abstract: A battery housing is comprised of a unitary, seamless base member having a generally planar, quadrilateral bottom face with a side wall extending therefrom. The length dimension of the bottom face is at least twice the height of the side wall. The base member has an open top face. The housing includes a cover which closes the open top face and is engageable with the side wall of the base. An electrically resistive sealing gasket is configured to contact the cover member and the side wall so as to provide a fluid-tight seal. The components are mechanically interlocked by crimping or hemming. The housing is specifically configured to accommodate stacking of individual batteries into power assemblies, and the geometry of the housing optimizes thermal management. Further disclosed are batteries and battery assemblies including the housing.

Abstract: Disclosed herein is a device for simultaneously adjusting vertical height and horizontal deflection including a lower plate fixed to a floor, an upper plate, vertical height and horizontal deflection of which are adjusted, one or more variable posts connected to an upper end of the lower plate and a lower end of the upper plate, and a height adjustment unit, a lower end of which is fixedly disposed above the lower plate and an upper end of which is disposed at the lower end of the upper plate in a line contact fashion, the height adjustment unit adjusting vertical height and horizontal deflection of the upper plate at the line contact portion.

Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly including a separator disposed between a cathode and an anode is mounted in a battery case, wherein an asymmetric structure with respect to a central axis crossing the electrode assembly in plane is formed at a portion of at least one side of the electrode assembly constituting the outer circumference of the electrode assembly.

Abstract: A film covered battery has a battery element equipped with a plurality of electrode plates laminated via separators, and an exterior film for hermetically sealing the battery element. A cover film is attached to a hollow present in predetermined regions set on a surface of the exterior film. The predetermined regions are regions obtained by removing overlap regions from projected regions obtained by projecting the electrode plates to the surface of the exterior film, the overlap regions being regions where the projected regions overlap with members interposed between the electrode plates at the outermost layers and the exterior film. It is possible to cover the hollow on the surface, without increasing the thickness of the film covered battery.

Abstract: The disclosure is directed to an assembled battery that includes a plurality of battery modules and unit cells. The unit cells of each battery module are electrically connected through a plurality of collars placed around a shaft member that secures the battery modules. The shaft member may also electrically connect the unit cells in some embodiments. In other embodiments, axial force from the securing shaft member deforms the collars to create the electrical connections. Alternative embodiments include engagement members secure the battery modules in order to eliminate the need for axial force from a shaft member to complete the assembled battery.

Abstract: An electrochemical cell (100) comprises at least one electrode stack (150) having at least one conductor device (110) and at least one casing (130). The casing (130) at least partially encases the electrode stack (150) and has at least one passage section (140) for the least one conductor device (110) from the interior to the exterior of the casing. At least one protective device (120) is disposed at this passage section (140) to maintain a substantially fluid-tight property of the casing (130) in the area of this passage section (140), i.e. to minimize the danger of damaging the casing (130) and/or its sealing seam in the area of this passage section (140).

Abstract: A leak-proof package for at least one defective battery containing corrosive liquid. The inventive package has at least three layers and includes an inner container configured to accept the battery therewithin, a fluid-impermeable intermediate container sealing the inner container therewithin, and an outer container enclosing the intermediate container such that the liquid-containing defective battery is protectively packaged for leak-free transportation. Another aspect of the present invention is a method for packaging at least one battery containing corrosive liquid by loading the battery into the inner container which is sealed within the intermediate container inside the locked outer container such that the liquid-containing defective battery is protectively packaged for leak-free transportation.

Abstract: The invention relates to electrochemical cells having a jellyroll electrode assembly that includes a lithium-based negative electrode, a positive electrode with a coating comprising greater than about 94 wt. % of iron disulfide.

Abstract: A method for manufacturing a sealed cell includes the step of welding the joint between an outer can and a sealing body by applying high-energy radiation. Grooves are formed on the outer peripheral surface of the sealing body and/or a portion of the inner peripheral surface of the outer can, the portion facing the outer peripheral surface of the sealing body, the grooves being communicated with at least one of inside and outside the cell. A groove-forming region is formed of a plurality of the grooves having widths of 70 to 600 ?m and spacings of 70 to 600 ?m therebetween. The welding step applies the beam so that the deepest part of a melting section formed when the materials of the outer can and of the sealing body are melted by the beam can be located below the upper ends of the grooves forming the groove-forming region.

Abstract: A method for reducing moisture in a battery enclosure is presented. The method may reduce battery degradation during some conditions. In one example, moisture is controlled in a battery enclosure by a desiccant material. In another example, moisture is controlled in a battery enclosure by periodically passing electrical current through a Peltier device.

Abstract: According to one embodiment, a manufacturing device for a battery, includes, an electrolyte supply unit which introduces an electrolyte into a cell, a chamber which accommodates the battery cell, a first pressure adjustment unit configured to make a pressure in the battery cell lower than a pressure on the side of the electrolyte supply unit, and a second pressure adjustment unit configured to make a pressure outside the battery cell in the chamber lower than the pressure in the battery cell, thereby increasing the capacity of the battery cell.

Abstract: A battery includes a plurality of electrode members each having a positive electrode, a negative electrode and an insulating separator arranged between the positive electrode and the negative electrode, bus bars each electrically connected to electrode members, and a battery case that houses the electrode members.

Abstract: Disclosed is a method for manufacturing a battery cell including an electrode assembly and electrolyte provided in a battery case composed of a laminate sheet having a resin layer and a metal layer, which includes; (a) thermally fusing and sealing the periphery of the case except for an end part thereof while the electrode assembly is mounted in the case; (b) introducing the electrolyte through the unsealed end part then sealing the same by thermal fusion; (c) charging and discharging the battery cell to activate the same; (d) puncturing the unsealed part inside the end part to form a through-hole communicating with the inside of the case; and (e) pulling top and bottom faces of the battery case in the opposite direction to each other at the unsealed part to open the same while applying vacuum pressure, to thereby remove the gas generated during activation as well as excess electrolyte.

Abstract: Disclosed is a method for manufacturing a battery cell including an electrode assembly and electrolyte provided in a battery case made of a laminate sheet having a resin layer and a metal layer, which includes: (a) mounting the electrode assembly in the battery case and sealing the periphery of the battery case except for one end part thereof through thermal fusion; (b) introducing the electrolyte through the unsealed end part and sealing the end via thermal fusion; (c) charging-discharging the battery cell to activate the same; (d) transferring gas generated during activation and excess electrolyte to the foregoing end part of the battery cell by centrifugal force; and (e) removing the gas and excess electrolyte from the end part.

Abstract: Provided are electrochemical cell assemblies and methods of fabricating thereof. A cell assembly includes an anode containing lithium titanium oxide and a cathode forming a jellyroll together with the anode. Each of the electrodes is connected to a separate cap and electrically insulated from the case. As such, the case is electrochemically neutral and may be made from a larger selection of materials. For example, a case may be made from steel that would otherwise dissolve if exposed to the anode potential during cycling of the battery. Some of these case materials simplify processing and sealing characteristics. In certain embodiments, a case may be crimped around each of the caps and corresponding gaskets to provide sealing interfaces. The caps or at least their surfaces exposed to the electrolyte are made from materials that are electrochemically stable at corresponding potentials of the electrodes.

Abstract: A secondary battery includes an electrode assembly including a pair of electrodes separated from each other by a separator, a battery case including a front portion bonded to a back portion to produce wing portions at opposite edges of the battery case, the electrode assembly being arranged within an accommodating portion of the battery case, the accommodating portion being arranged between the wing portions, an insulating member arranged at each of said wing portions of the battery case and a bonding portion arranged at each of said wing portions to attach said wing portions to the accommodating portion of the battery case. The bonding portion may be a double sided tape and may be integrally provided with the insulating member to simplify manufacturing process thereof.

Abstract: A method for manufacturing a nonaqueous electrolyte secondary battery including a current interruption mechanism that interrupts electric current includes disposing, in the outer body, an electrode assembly and a nonaqueous electrolyte containing a compound having at least one of a cyclohexyl group and a phenyl group, adjusting the nonaqueous electrolyte to contain the compound having at least one of a cyclohexyl group and a phenyl group in an amount of from 2.5 g/m2 to 5.0 g/m2 with respect to a formation area of a positive electrode active material layer on a positive electrode substrate surface, and thereafter performing aging treatment at 60° C. or more at a state of charge of 60% or more. This battery exhibits excellent output characteristics in a low temperature condition and can sufficiently ensure reliability even when the battery is overcharged through two-step charging in a low temperature condition.

Abstract: A method of fabricating a lithium secondary battery, which improves charge-discharge characteristics, lifespan, and temperature characteristics of the battery and which includes interposing a separator between a positive electrode plate and a negative electrode plate, thus manufacturing an electrode assembly; housing the electrode assembly in a battery case, introducing an additive-containing electrolytic solution, and then sealing the battery case; subjecting the sealed battery case to pre-charging, and then removing gas generated by the pre-charging; subjecting the battery case to formation; and removing gas generated by the formation, wherein the additive is one or more selected from among LiF2BC2O4, 3,9-divinyl-2,4,8,10-tetraoxaspiro[5,5]undecane, LiB(C2O4)2, poly(ethyleneglycol)borate and derivatives thereof, halogen-substituted carbonate, and vinyl silane, and the pre-charging is conducted in a range of 10% or less of a battery capacity.

Abstract: A battery having the electrodes of multiple cell types interleaved to prevent thermal runaway by cooling a shorted region between electrodes. The battery includes multiple cell types where each cell type has multiple electrodes a first polarity. The electrodes of each of the cell types share a pair of the common electrodes having a second polarity. The electrodes of the multiple cell types and the multiple common electrodes are interleaved such that if the electrodes of the multiple cell types and the adjacent common electrodes of one or more cell types short together, the current within the shorted cells is sufficiently small to prevent thermal runaway and the electrodes of the adjacent cells of the other cell types of the first polarity and the common electrodes of the second polarity not having short circuits provide heat sinking for the heat generated by the short circuit to prevent thermal runaway.

Abstract: An apparatus including at least one substrate, the at least one substrate including first and second electrodes and configured to form a sealed chamber with the first and second electrodes contained therein and facing one another, the sealed chamber including electrolyte in the space between the first and second electrodes, wherein the at least one substrate is configured to undergo reversible stretching whilst still forming the sealed chamber containing the electrolyte.

Abstract: Disclosed herein is a secondary battery having an electrode assembly placed in a prismatic container, wherein an upper part of the inside of an electrolyte injection hole formed in a base plate mounted to an open upper end of the prismatic container is configured to have a chamfered structure in which the diameter of the electrolyte injection hole is gradually decreased downward, a lower part of the inside of the electrolyte injection hole is configured to have a non-chamfered structure, the chamfered structure is formed in an irregular shape to increase the length of an electrolyte leakage route along which an electrolyte leaks out of the secondary battery, and, when a sealing member is pressed into the electrolyte injection hole, the sealing member is deformed so as to correspond to an internal structure of the electrolyte injection hole such that the electrolyte injection hole is sealed by the sealing member.

Abstract: A method for producing battery modules or battery systems having a plurality of battery cells includes interconnecting and optionally arranging the battery cells with cell connectors to form the battery module or battery system architecture. The method also includes fitting the battery module or battery system with terminals and packaging all the battery cells of the battery module or system in a common plastic sheath by injection molding, so that the battery cells and cell connectors of the battery module or system are surrounded substantially completely by the plastic sheath. The battery module terminals or battery system terminals remain accessible from outside. A battery module or battery system can be produced in accordance with the method of the disclosure.

Abstract: The present invention, relating to the battery field, discloses a positive pole material of a lithium ion battery and method for preparing the same, a positive pole of a lithium ion battery, and a lithium ion battery, which are capable of effectively preventing precipitation of metal impurity ions on a negative pole, and improving the cycle performance and high-temperature storage performance of the lithium ion battery. The positive pole material of the lithium ion battery includes: a conductive additive; nano phosphate, where the formula of the nano phosphate is LiMPO4, M being one or multiple of Co, Ni, Mn, Fe, and V; and a functional polymer material, where the functional polymer material contains a transition metal ion chelating function group. The present invention also provides a method for preparing a lithium ion battery and a communication device. The present invention is applicable to the battery field.