Abstract: Systems and methods which provide battery configurations for delivering high power while maintaining high energy density are described. Embodiments provide cylindrical batteries configured to deliver high energy density while having high power density at least in part through an electrode configuration disposing electrode material for the cathode and/or anode over an extended length of a longitudinal edge of the respective cathode or anode. An electrode configuration may provide for a continuous length of electrode material disposed along a longitudinal edge of at least one of the cathode or anode. Additionally or alternatively, an electrode configuration may provide for a plurality of electrode tabs of electrode material spaced out along a longitudinal edge of at least one of the anode or cathode.

Abstract: An anode for an energy storage device includes a current collector having a metal oxide layer. A continuous porous lithium storage layer overlays the metal oxide layer, and a first supplemental layer overlays the continuous porous lithium storage layer. The continuous porous lithium storage layer may be substantially free of nanostructures. The continuous lithium storage layer may include amorphous silicon deposited by a PECVD process. The first supplemental layer includes silicon nitride, silicon dioxide, or silicon oxynitride. The anode may further include a second supplemental layer overlaying the first supplemental layer.

Abstract: The present invention provides a sealing process for a secondary battery of the present invention, which thermally fuses and seals a sealing portion that extends along an edge surface of a battery case, the sealing process comprising: an arrangement operation of disposing the sealing portion of the battery case between an anvil and a horn; a first region-fixing operation of pressing and fixing a first region of the sealing portion through the anvil and the horn; and a first region-primary sealing operation of applying an ultrasonic wave to the first region of the sealing portion through the horn at a set frequency and a set amplitude for a set time, thereby thermally fusing the first region of the sealing portion.

Abstract: A metal ion capacitor with outstanding power capabilities having a negative electrode based on hard carbon (HC) and a positive electrode based on a combination of activated carbon (AC) and a sacrificial salt selected from the group consisting of squarate, oxalate, ketomalonate and di-ketosuccinate or a combination thereof. The sacrificial salt is added to AC in the positive electrode as a source of metal ions for pre-doping the HC and to efficiently compensate its high irreversible capacity by providing the metal ions necessary for the formation of solid electrolyte interphase (SEI) on the hard carbon, allowing for a 1:1 and superior mass balances between anode and cathode. Advantageously, the extraordinary performance of this approach has been successfully demonstrated not only in lithium ion capacitors (LICs) but also in other metal ion capacitors such as sodium and potassium ion capacitors.

Abstract: A system for stacking fuel cells for a fuel cell stack includes a component part storage region to store the fuel cells, a finished product storage region to store a completed fuel cell stack transferred by an automated guided vehicle, and a plurality of stacking regions disposed between the component part storage region and the finished product storage region, where one side of each stacking region corresponding to the finished product storage region is formed as an entry and exit for the automated guided vehicle for the fuel cell stack, a stacking unit is disposed at each of remaining sides of the stacking region, and the stacking region is supplied with the fuel cells from the component part storage region by the automated guided vehicle to sequentially stack the fuel cells to manufacture the fuel cell stack.

Abstract: The present invention provides a thermally-decomposable consolidated polymer particle encapsulated-electrode for a lithium-ion battery. The electrode includes polymer particles including at least one connection unit and at least one crosslinker in an amount of approximately 40% to 98% by weight and at least one binder material in an amount of approximately from 2% to 60% by weight. The consolidated crosslinked polymer particle coating results in a porous structure encapsulating the electrode. The pressure resistance of the consolidated crosslinked polymer particle coating ranges approximately from 0.5 to 8 MPa and the consolidated crosslinked polymer particle coating is decomposed to release a non-flammable gas and phosphorous-containing molecules so as to prevent thermal runaway at a temperature approximately from 300° C. to 500° C.

Abstract: The present disclosure relates to a method for manufacturing a lithium secondary battery comprising the steps of: a) preparing an electrode assembly including a positive electrode, a negative electrode, and a separator interposed therebetween; b) housing the electrode assembly in a battery case, injecting a non-aqueous electrolyte thereto and sealing the battery case to produce a preliminary battery; c) activating the preliminary battery; d) charging the activated preliminary battery to a SOC in a range of 25 to 35 to produce a secondary battery; and e) subjecting the secondary battery to a high-temperature aging for 1 hour to 6 hours at a temperature range of 60° C. to 100° C., and a lithium secondary battery manufactured by the above manufacturing method.

Abstract: Discussed is a separator for a lithium secondary battery and a lithium secondary battery including the same, more specifically, a separator for a lithium secondary battery including a porous substrate and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a defect-containing molybdenum disulfide. The separator for lithium secondary battery adsorbs lithium polysulfide through the coating layer comprising the defect-containing molybdenum disulfide and suppresses the growth of a lithium dendrite, thereby improving the capacity and lifetime characteristics of the lithium secondary battery.

Abstract: The invention relates to a method for producing a rechargeable high-energy battery with an anion-redox-active composite cathode containing lithium hydroxide as the electrochemically active component, which is mixed and contacted with electronically or mixed-conductive transition metals and/or transition metal oxides, so that an electronically or mixed-conductive network is formed, this mixture is applied to a current drain, and the composite cathode thus formed is placed in a cell housing together with a separator, a lithium-conductive electrolyte and a lithium-containing anode, so that an electrochemical cell is present and is subjected to at least one initial forming cycle.

Abstract: A battery includes a positive electrode, a negative electrode, and a separator. The negative electrode forms a honeycomb core. The honeycomb core includes a first face, a second face, a partition, and a circumferential wall. The second face faces the first face. The partition is formed between the first face and the second face. The partition extends in a grid pattern to separate a plurality of hollow cells. The circumferential wall surrounds a circumference of the partition. The separator includes a first layer and a second layer. The first layer covers at least part of the partition. The second layer covers at least part of the first face and the second face. The positive electrode includes a first region and a second region. The first region is inserted in the hollow cells. The second region extends outwardly beyond the second layer of the separator.

Abstract: A nonaqueous electrolyte secondary battery includes an exterior package, an electrode assembly, and an electrolyte solution. The exterior package stores the electrode assembly and the electrolyte solution. The electrode assembly is shaped to have a flat shape. The electrode assembly includes a layered body. The layered body includes a first separator, a positive electrode plate, a second separator, and a negative electrode plate. The first separator, the positive electrode plate, the second separator, and the negative electrode plate are layered in this order. The electrode assembly is formed by spirally winding the layered body. Each of the first separator and the second separator has a proportional limit of less than or equal to 10.2 MPa. The proportional limit is measured in a compression test in a thickness direction of each of the first separator and the second separator.

Abstract: A secondary battery including an electrode wound body having a structure in which a positive electrode and a negative electrode are stacked and wound with a separator interposed therebetween, a positive electrode current collector plate, a negative electrode current collector plate and an exterior can that accommodates the electrode wound body, the positive electrode current collector plate, and the negative electrode current collector plate. The positive electrode has a first covered portion covered with a positive electrode active material layer and a positive electrode active material non-covered portion on a positive electrode foil, and the negative electrode has a second covered portion covered with a negative electrode active material layer and a negative electrode active material non-covered portion on a negative electrode foil.

Abstract: Provided are a method of manufacturing a solid electrolyte sheet including: a step of performing preforming on inorganic solid electrolyte particles containing solid particles plastically deformable at 250° C. or lower; and a step of performing shearing processing on one surface of the obtained preformed body, in which a solid electrolyte layer consisting of the inorganic solid electrolyte particles is formed, and a method of manufacturing a negative electrode sheet for an all-solid state secondary battery and an all-solid state secondary battery, which include the method of manufacturing a solid electrolyte sheet.

Abstract: An electrode assembly manufacturing device includes a winding mechanism, a heating mechanism, a conveyor belt arranged between the heating mechanism and the winding mechanism, and a forming mechanism. The winding mechanism is configured to wind a positive electrode sheet, a separator, and a negative electrode sheet into an electrode assembly. The conveyor belt is configured to transfer the electrode assembly from the winding mechanism to the heating mechanism. The heating mechanism is configured to heat the electrode assembly. The forming mechanism is configured to press and form the electrode assembly.

Abstract: A method for forming electrodes assemblies, used for producing secondary lithium batteries, comprises the steps of feeding two separator strips with continuous feed motions, inserting between the two strips a succession of anodes at reciprocal distances that progressively increase, arranging a succession of cathodes, either all on an outer side of a strip, or alternating a cathode on an outer side of a strip and a cathode on an outer side of the other strip, such that on each single anode a single cathode is superimposed with the interposition of one of the two strips; strips, cathodes and anodes are then laminated together, the laminated product is wound in a single winding direction and the wound product is separated from the rest of the laminated product to enable a subsequent electrodes assembly to be formed.

Abstract: An eco-friendly power source, such as a battery module provided for a transportation vehicle includes a first sub-module and a second sub-module disposed in a first direction, the first sub-module and the second sub-module respectively including a plurality of battery cells stacked in a second direction, which is perpendicular to the first direction, and a lower cover coupled to the first sub-module and the second sub-module. The first sub-module and the second sub-module are disposed to be rotationally symmetrical to each other about a central axis, which is perpendicular to both the first direction and the second direction.

Abstract: A battery includes: an electrode body including a positive electrode having a positive electrode active material layer formed on a positive electrode collector and a negative electrode having a negative electrode active material layer formed on a negative electrode collector. At one end of the electrode body, a positive electrode collector laminated part, in which a positive electrode collector exposed part is stacked, is present. At another end thereof, a negative electrode collector laminated part, in which a negative electrode collector exposed part is stacked, is present. The positive electrode collector laminated part and the negative electrode collector laminated part are divided into groups while the groups being shifted in position so as not to overlap on a same line in the stacking direction in the electrode body. The groups are mutually independently integrated in one unit, and all tip parts of the groups are joined with one collector terminal.

Abstract: A device for manufacturing a cell stack having a plurality of cell assemblies. The device comprises several positioning units accommodating the plurality of cell assemblies. The positioning units each comprise a positioning jaw enclosing the plurality of cell assemblies disposed one above the other. The device further comprises a first moving unit moving the positioning unit. The first moving unit comprises a moving plate mounted in a movable manner and an actuator. The positioning units are disposed on the moving plate. The actuator moves the moving plate. The positioning units are arranged such that the individual cell assemblies are centered between the positioning jaws by the movement initiated by the first moving unit. Finally, the device comprises a support, which is decoupled from the movement of the first moving unit, wherein the plurality of cell assemblies and/or plies rest on the support.

Abstract: A battery includes positive and negative current collectors and a plurality of bipolar electrodes arranged in a stack between the positive and negative current collectors. The positive and negative current collectors and the stack of the plurality of bipolar electrodes are folded in an S-shape.

Abstract: A winding method may comprise clamping heads of an anode plate, a cathode plate and a separator between a first half winding needle and a second half winding needle of a winding needle assembly at a winding station; and rotating the winding needle assembly at the winding station to wind the anode plate, the cathode plate and the separator to form an electrode assembly.

Abstract: An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolyte. The positive electrode includes a positive electrode active material layer that includes a positive electrode active material, a fluorine-based binder having a melting point from 152° C. to 166° C., a conductive assistant having a specific surface area from 1000 m2/g to 1500 m2/g, and a vinylpyrrolidone-based polymer.

Abstract: A lithium-ion secondary battery is provided, where an electrolyte solution of the lithium-ion secondary battery comprises a highly heat-stable salt (My+)x/yR1(SO2N?)xSO2R2, where the My+ is a metal ion, R1 and R2 are each independently a fluorine atom, an alkyl with 1-20 carbon atoms, a fluoroalkyl with 1-20 carbon atoms, or a fluoroalkoxy with 1-20 carton atoms, x is 1, 2, or 3, and y is 1, 2, or 3. A mass percent of the salt in the electrolyte solution is set as k2%; a temperature rise coefficient k1 of the positive electrode sheet satisfies 2.5?k1?32, where k1=Cw/Mc, Cw is a positive electrode material load per unit area (mg/cm2) on the surface of any side of the positive electrode current collector on which a positive electrode material layer is loaded, and Mc is a carbon content (%) of the positive electrode material layer; and the lithium-ion secondary battery satisfies 0.34?k2/k1?8.

Abstract: A hybrid lithium-ion battery-capacitor (H-LIBC) energy storage device includes a hybrid composite cathode electrode having a lithium ion battery (LIB) cathode active material and a lithium ion capacitor (LIC) cathode active material. An anode electrode having a surface is pre-loaded and pressed with a lithium (Li) thin film source. The anode electrode is pre-lithiated with the lithium film source by positioning the Li film source on the surface of anode electrode after electrolyte filling and soaking processes, a separator and an organic solvent electrolytic solution including a lithium salt electrolyte are also provided. A method of making a hybrid lithium-ion battery-capacitor and a method of making a hybrid composite cathode for a hybrid lithium-ion battery-capacitor are also disclosed.

Abstract: The secondary battery according to the present invention may comprise the separator pocket part having the accommodation groove in which the first electrode plate is accommodated and a radical unit provided as the second electrode plate disposed on one surface of the separator pocket part to secure the stacking property, safety, and insulation.

Abstract: A metal-hydrogen battery includes a first electrode, a second electrode, and an electrolyte disposed between the first electrode and the second electrode. The second electrode includes a bi-functional catalyst to catalyze both hydrogen evolution reaction and hydrogen oxidation reaction at the second electrode.

Abstract: An electrode using a carbon nanotube as a conductive material, and excellent in resistance characteristics is provided. An electrode for a secondary battery herein disclosed has a collector, and an active material layer formed on the collector. The active material layer includes an active material and a carbon nanotube. At least a part of the surface of the carbon nanotube is coated with a material including an element with a lower electronegativity than that of carbon.

Abstract: A method for manufacturing a secondary battery includes: assembling an electrode assembly having a plurality of electrodes separated by at least one separator positioned between each of the electrodes; sealing the electrode assembly and an electrolyte solution in a battery case; and dissolving at least a portion of an adhesive into the electrolyte solution such that a mark from the adhesive is left on the separator. The step of assembling the electrode assembly includes adhering a first one of the plurality of electrodes to the at least one separator with the adhesive positioned between the first electrode and the separator. A secondary battery manufactured by such method is also provided.

Abstract: An all-solid battery is formed by laminating a first current collector, a positive-electrode layer, a solid electrolyte layer, a negative-electrode layer, and a second current collector in this order. The positive-electrode fine particle layer contains positive-electrode active material fine particles having a particle diameter smaller than that of the positive-electrode active material and is formed on a side surface of the positive-electrode layer. The negative-electrode fine particle layer contains negative-electrode active material fine particles having a particle diameter smaller than that of the negative-electrode active material and is formed on a side surface of the negative-electrode layer.

Abstract: A battery module according to the present invention includes: a case body including a flat plate portion and a base portion projecting from the flat plate portion; a circuit board including a through-hole formed in a thickness direction and secured to the case body, the base portion being inserted into the through-hole; and a battery secured to and placed on the base portion, in which the battery is a flat battery with a coin shape or a button shape, and electrode plates connected to each of the positive and negative poles of the battery are connected to the circuit board to supply a power source to electronic components disposed on the circuit board.

Abstract: An anode for an energy storage device includes a current collector having a metal oxide layer. A continuous porous lithium storage layer overlays the metal oxide layer, and a first supplemental layer overlays the continuous porous lithium storage layer. The first supplemental layer includes silicon nitride, silicon dioxide, or silicon oxynitride. The anode may further include a second supplemental layer overlaying the first supplemental layer. The second supplemental layer has a composition different from the first supplemental layer and may include silicon dioxide, silicon nitride, silicon oxynitride, or a metal compound.

Abstract: The present disclosure provides a wound-type electrode assembly comprising a first and second electrode plates, a first and second electrode tabs, and a separator. The first and second electrode plates include a first current collector and active substance layer, and a second current collector and active substance layer. Two surfaces of the first current collector of the first winding start section of the first electrode plate are not coated with first active substance layer and defined as a first start blank current collector, the first start blank current collector is welded to a first electrode tab. The second pole piece comprises a second groove, a bottom of which is a second current collector and a circumference thereof is a second active substance layer; the second electrode tab is accommodated in the second groove and electrically connected to the second current collector at the second groove.

Abstract: The present invention relates to a lithium secondary battery including a positive electrode, a negative electrode, a separator, which includes a coating layer including an organic binder and inorganic particles, and a gel polymer electrolyte formed by polymerization of an oligomer, wherein the organic binder and the gel polymer electrolyte are bonded by an epoxy ring-opening reaction, and a method of preparing the same.

Abstract: The present disclosure provides an electrode assembly including a first electrode sheet, the first electrode sheet includes a first current collector and a first tab. The first tab extends from a surface of the first electrode sheet and electrically connected with the first current collector, a plurality of tabs are provided and the number of the first tabs is q. The plurality of first tabs include a first breakable tab, the first breakable tab includes a breakable part and a first insulating layer, the first insulating layer wraps the breakable part, the breakable part includes a first segment and a second segment, the first segment is connected with the second segment, and an included angle between the first segment and the second segment is less than 90°. The number of first breakable tabs is p, and p/q?1/2.

Abstract: An alkaline electrochemical cell has a central cathode having a corresponding cathode current collector electrically connected with a positive terminal of the electrochemical cell. The cathode current collector has a tubular shape, such as a cylindrical shape or rectangular shape, extending parallel with the length of the central cathode. The cathode current collector is embedded within the central cathode, such as at a medial point of a radius of the central cathode, thereby minimizing the distance between the cathode current collector and any portion of the central cathode, thereby increasing the mechanical strength of the cathode and facilitating charge transfer to the cathode current collector.

Abstract: A system for stacking fuel cells for a fuel cell stack includes, a component part storage region to store the fuel cells, a finished product storage region to store a completed fuel cell stack transferred by an automated guided vehicle, and a plurality of stacking regions disposed between the component part storage region and the finished product storage region, where a pair of stacking units are disposed at opposite sides of a first transfer robot that is centrally disposed in the stacking region, one side of the stacking region is formed as an entry and exit for the automated guided vehicle for the fuel cell stack, and the stacking region is supplied with the fuel cells from the component part storage region by the automated guided vehicle to sequentially stack the fuel cells to manufacture the fuel cell stack.

Abstract: A method for integrating a thin film microbattery with electronic circuitry includes forming a release layer over a handler, forming a thin film microbattery over the release layer of the handler, removing the thin film microbattery from the handler, depositing the thin film microbattery on an interposer, forming electronic circuitry on the interposer, and sealing the thin film microbattery and the electronic circuitry to create individual microbattery modules.

Abstract: A method for integrating a thin film microbattery with electronic circuitry includes forming a release layer over a handler, forming a thin film microbattery over the release layer of the handler, removing the thin film microbattery from the handler, depositing the thin film microbattery on an interposer, forming electronic circuitry on the interposer, and sealing the thin film microbattery and the electronic circuitry to create individual microbattery modules.

Abstract: A system for electrical energy production from chemical reagents in a compartmentalized cell includes: at least two electrodes, comprising at least one anode and at least one cathode; at least one separator, that separates the anodes and the cathodes; and an ionic liquid electrolyte system. The system can be a battery or one or more cells of a battery system. The ionic liquid electrolyte system comprises an ionic liquid solvent; an ether co-solvent, comprising a minority fraction, by weight, of the electrolyte; and a lithium salt. In preferred variations, the anode is a lithium metal anode and the cathode is a metal oxide cathode and the separator is a polyolefin separator.

Abstract: An electrode transferring apparatus of a battery cell includes: a transferring body configured to transfer at least one electrode of the battery cell; and an electrode gripper mounted to the transferring body to be vertically movable, the electrode gripper being configured to grip at least one electrode of the battery cell and having a rounded end in contact with the at least one electrode.

Abstract: A battery includes a negative electrode body wound to be flat. The negative electrode body has a plurality of negative electrode main bodies arranged in a line in a negative electrode connection direction in a developed state, and at least one negative electrode connection portion connecting a pair of negative electrode main bodies adjacent in the developed state among the plurality of negative electrode main bodies. The at least one negative electrode connection portion is folded back such that the plurality of negative electrode main bodies overlap each other. A dimension of each of the plurality of negative electrode main bodies in the negative electrode connection direction decreases with separation from an outer end side negative electrode main body. A dimension of the at least one negative electrode connection portions in the negative electrode connection direction increases with separation from an inner end side negative electrode connection portion.

Abstract: A negative electrode of a secondary battery may include an electrode plate including lead; and an active material layer provided on the electrode plate and including composite particles having a core-shell structure, wherein a core of the composite particle includes lead; a shell of the composite particle includes carbon; and a specific surface area of the composite particles is 1 to 5,000 m2/g.

Abstract: An energy storage device comprising: a container, a mandrel, at least one sheet of separator material, and two or more electrodes. The container comprises a base and an inner surface forming an internal space. The mandrel is positioned in the container and is spaced apart from the inner surface to define a cavity within the container. The sheet of separator material is arranged about the mandrel to provide a plurality of discrete separator layers within the cavity. At least one electrode is provided between each of the discrete separator layers, and at least a portion of an external surface of a container has a curved profile.

Abstract: Provided are a high-capacity secondary battery including a cathode including an over-lithiated oxide cathode material or a Ni-rich cathode material; a lithium anode (Li anode); and an electrolyte including a superoxide dismutase mimic catalyst (SODm).

Abstract: What is provided is a solid state battery which can be manufactured with a high yield, has little variation in initial performance, and has a long lifespan and a method of manufacturing the same. A solid state battery includes a flat laminated structure which is obtained by winding an electrode laminated sheet extending from a first end to a second end.

Abstract: A method of suctioning a gasket main body with a suction jig to separate the gasket main body from a carrier film. The method separates a gasket main body from a carrier film in a gasket including a combination of the gasket main body and the carrier film adhered thereto, where a suction jig is used to separate the carrier film and the gasket main body; the suction jig includes a suction surface at a position facing the carrier film; the suction surface being formed with a suction groove having a shape that corresponds with a planar shape of the gasket main body, the suction groove being formed with a plurality of suction paths across the entire periphery; and the gasket main body is suctioned to the suction groove with the suction force from the suction paths in the suction jig and separated from the carrier film.

Abstract: Provided are an anode active material for secondary battery which includes porous iron oxide nanoparticles, a manufacturing method thereof, and a secondary battery including the same. The anode active material for secondary battery of the present disclosure minimizes a volume change of iron oxide caused by intercalation and deintercalation of lithium even during consecutive charges and discharges and thus can improve the capacity and lifespan characteristics of a secondary battery employing the anode active material. Further, the manufacturing method of an anode active material for secondary battery makes it possible to manufacture an anode active material for secondary battery including iron oxide nanoparticles in an environmentally friendly and simple manner and thus makes it possible to mass-produce the anode active material.

Abstract: An ultrasonic extraction performance checking device and method for an ultrasonic extractor for detecting and analyzing a chemical composition of a consumer product. The ultrasonic extraction performance checking device includes a hanging frame which is hung inside the ultrasonic extractor and matched with the ultrasonic extractor, and a hanging frame plane checking device which is detachably and vertically or horizontally placed in the hanging frame and clamped with an alloy foil. The alloy foil is surrounded by a tensioning fixture. The tensioning fixture causes the alloy foil to generate a surface tension of 5 to 15 N and to be tightened and fixed to the bottom surface of the hanging frame plane checking device.

Abstract: A method includes, by a folding station: receiving an anode assembly including anode collectors connected by anode interconnects and coated with a separator; receiving a cathode assembly including cathode collectors connected by cathode interconnects; locating a first anode collector over a folding stage; locating a first cathode collector over the first anode collector to form a first battery cell between the first anode collector and the first cathode collector; folding a first anode interconnect to locate a second anode collector over the first cathode collector to form a second battery cell between the first cathode collector and the second anode collector; folding a first cathode interconnect to locate a second cathode collector over the second anode collector to form a third battery cell between the second anode collector and the second cathode collector; wetting the separator with solvated ions; and loading the anode and cathode assemblies into a battery housing.

Abstract: A solid electrolyte membrane and method of preparing, including a plurality of polymer filaments arranged crossed as a 3-dimensional structure in the form of a net of nonwoven fabric-like shape, and a plurality of inorganic solid electrolytes inserted and uniformly distributed in the structure. By this structural feature, a large amount of solid electrolyte particles are uniformly distributed and filled in the electrolyte membrane, contact between the particles is good, and ionic conduction paths are sufficiently provided. Additionally, the durability of the solid electrolyte membrane is improved by the 3-dimensional structure, and the flexibility and strength increase. The nonwoven fabric composite solid electrolyte membrane has an effect in preventing inorganic solid electrolyte particle from being disconnected therefrom.