Abstract: Electrical energy storage devices made using a wet electrode application technique are associated with high energy consumption. Herein, a dry electrode or electrolyte application process involves mixing active material with a binder and then fibrillating the mixture. During preparation of the mixture, the smallest particles are removed to improve binding. The mixture is roll-pressed into a film, which is then actively cooled. Optionally, tension in the cooled portion of the film is increased for spooling the film. The film is adhered to a pre-treated current collector and then wound into a jelly roll for the manufacture of an electrical energy storage device.

Abstract: Nanoporous carbon-based scaffolds or structures, and specifically carbon aerogels and their manufacture and use thereof. Embodiments include a sulfur-doped cathode material within a lithium-sulfur battery, where the cathode is collector-less and is formed of a binder-free, monolithic, polyimide-derived carbon aerogel. The carbon aerogel includes pores that surround elemental sulfur and accommodate expansion of the sulfur during conversion to lithium sulfide. The cathode and underlying carbon aerogel provide optimal properties for use within the lithium-sulfur battery.

Abstract: A negative electrode plate comprising a substrate, which comprises a current collector and negative electrode active material bonded on the current collector; first lithium bands arranged on a front surface of the substrate; second lithium bands arranged on a back surface of the substrate; the first lithium bands and the second lithium bands are mutually staggered; adjacent ones of the first lithium bands are spaced apart and adjacent ones of the second lithium bands are spaced apart, respectively.

Abstract: Disclosed are a button battery and an electronic device. The battery includes: a battery cell; at least one tab with one end thereof connected to one collector of the battery cell; and a shell including a first housing and a second housing hermetically connected onto each other to enclose and form a cavity in which the battery cell and the tab are positioned, wherein the at least one tab is connected with the other end thereof to an inner wall of the first housing or to an inner wall of the second housing before the first housing and the second housing are hermetically connected.

Abstract: This application discloses a secondary battery including a positive electrode plate and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and a positive electrode film disposed on a surface of the positive electrode current collector and comprising a positive active material, the negative electrode plate comprises a negative electrode current collector and a negative electrode film disposed on a surface of the negative electrode current collector and comprising a negative active material. The positive active material comprises one or more of layered lithium transition metal oxides and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 6.0 m??R?12.0 m?; or the positive active material comprises one or more of lithium-containing phosphates with olivine structure and modified compounds thereof, and a resistance R of the negative electrode plate satisfies: 3.0 m??R?7.0 m?.

Abstract: A method of manufacturing an all-solid-state battery electrode, an all-solid-state battery electrode manufactured by the method, and an all-solid-state battery including the electrode are disclosed. In the method, a specific type of binder included in the electrode is prepared in a fiber form by applying pressure to the binder under specific conditions, so that the fiber-form binder thus prepared has an average fineness that satisfies a specific range. Therefore, the all-solid-state battery including the electrode has an advantage of having high capacity even in the case of electrode thickening for high loading.

Abstract: This application discloses a negative-electrode active material and a preparation method thereof, a secondary battery, and a battery module, a battery pack, and an apparatus that include such secondary battery. The negative-electrode active material includes a core and a coating layer covering at least part of a surface of the core, where the core includes artificial graphite, the coating layer includes amorphous carbon, a volume-based particle size distribution of the negative-electrode active material satisfies Dv99?24 ?m, a volume-based median particle size Dv50 of the negative-electrode active material satisfies 8 ?m?Dv?15 ?m, Dv99 is a particle size corresponding to a cumulative volume distribution percentage of the negative-electrode active material reaching 99%, and WO is a particle size corresponding to a cumulative volume distribution percentage of the negative-electrode active material reaching 50%.

Abstract: Provided is a sulfur-based active material for a non-aqueous electrolyte secondary battery having a large charge/discharge capacity and excellent cycle characteristics which is inexpensively and easily provided, an electrode comprising the sulfur-based active material, and a non-aqueous electrolyte secondary battery comprising the electrode, as well as a producing method thereof. The sulfur-based active material is obtainable by calcinating a raw material, the raw material comprising (1) a heat-expandable particle comprising an outer shell comprising an acryl-based copolymer and a hydrocarbon included inside the outer shell, the heat-expandable particle having an expansion starting temperature of 150° C. or lower, and (2) sulfur.

Abstract: A method of manufacturing a dry electrode sheet for a secondary battery includes providing a dry electrode composition comprising an electrode active material and a binder, a calendering operation of preparing an electrode sheet by passing the dry electrode composition through a calender roll including three or more rolls. The calendering operation includes a first electrode sheet manufacturing operation of manufacturing a first electrode sheet by injecting the dry electrode composition between two adjacent rolls spaced apart from each other by a first interval W1, and an electrode sheet manufacturing operation of manufacturing a dry electrode sheet by inserting the first electrode sheet between two adjacent rolls spaced apart from each other by a second interval W2. The first interval W1 and the second interval W2 have a compression rate of 0.10 or more and 0.65 or less, represented by the equation (1) compression rate=(W1?W2)/W1.

Abstract: Disclosed is a negative electrode, including: a negative electrode current collector; and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector, and having a lower layer region containing a first active material and a first binder polymer, and an upper layer region disposed on the lower layer region and containing a second active material and a second binder polymer, wherein the first active material includes primary particles of artificial graphite, the second active material includes secondary particles of artificial graphite and a carbon coating layer disposed on the secondary particles, and the weight percentage (wt %) of the first binder polymer in the lower layer region is larger than the weight percentage (wt %) of the second binder polymer in the upper layer region. Also disclosed are a method for manufacturing the negative electrode and a lithium secondary battery including the negative electrode.

Abstract: A heat exchanger for an electrical component, said exchanger comprising a first body (28) defining at least a primary channel (30) and a secondary channel (32), which are parallel and adjacent, in which fluid circulates in series from the primary channel (30) to the secondary channel (32), in opposite directions, said first body (28) having at least one exchange surface for exchanging heat between the fluid circulating in said channels (30, 32) and said component, a width of the primary channels (30) being less than a width of the secondary channels (32).

Abstract: A separator including a porous polymer substrate, and a porous coating layer, and an electrochemical device comprising the same. The porous coating layer includes P(VDF-TrFE-CTFE) and PVDF-CTFE as a binder polymer. The separator has a lower resistance by changing the characteristics of the binder polymer.

Abstract: A foil-like functional material (1) providing a predefined function and may be used for targeted physical, chemical, physicochemical, biological, technical and technological purposes, and in which is arranged a support medium (2), which comprises a total support volume, has a cross-sectional extent (7) of ?100 ?m, like a matrix, and is formed from linear support elements (3a) and node-like support elements (3b), which form the substance components of the support medium (2) and pass through the total support volume to form a strip-like extent with interconnected partial volumes (5), situated therein and spanned by support elements (3) close by. The support elements (3) are sheathed with a first functional substance (4) which provides a first function. The remaining volume of the total support volume is filled with one second functional substance (6) which differs from the first function.

Abstract: According to an embodiment, a porous electrode comprises a three-dimensional nanostructured porous catalyst film including a catalyst material promoting an oxygen reduction and evolution reactions, having an aligned pore structure, and having an upper surface and a lower surface opening the pore structure and a porous current collecting layer interfacially adhered to the three-dimensional nanostructured porous catalyst film by a binder polymer.

Abstract: This application relates to the battery field, and specifically, to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The electrode plate in this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-side thickness D2 of the conductive layer satisfies 30 nm?D2?3 ?m, and a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.

Abstract: The present invention relates to the new process of preparation of a Li-rich layered oxide based on Mn and optionally on Ni and/or Co in which F is incorporated within the crystal of the oxide (or “fluorinated oxide”). It also relates to the new fluorinated oxide its use as a component in a cathode of a battery.

Abstract: Power supply device is power supply device to be fixed to power supply target equipment, the power supply device including: a plurality of battery cells each having a prismatic outer covering can; a pair of end plates that cover both side end faces of a battery stack in which the plurality of battery cells are stacked; a plurality of fastening members that are plates extending in a stacking direction of the plurality of battery cells and are arranged on opposed side faces of the battery stack to fasten end plates to each other; bracket for fixing the pair of end plates to power supply target equipment; guide mechanism that slides end plate in the stacking direction of the battery stack at at least one interface between end plate and bracket; and elastic body arranged at at least one interface between end plate and bracket.

Abstract: An electrolyte sheet for solid oxide fuel cells includes a ceramic plate body having rounded corners in a plan view from a thickness direction of the ceramic plate body, the ceramic plate body having a thickness of 200 ?m or less, and each of the rounded corners having a ratio Dmax/Dmin of 1.0 to 1.1, wherein Dmax and Dmin respectively represent maximum and minimum values between distances D from an intersection of extension lines of two sides of the ceramic plate body adjacent to a respective corner to starting points of the respective extension lines in the plan view.

Abstract: There is disclosed a hybrid composite anode for lithium-ion batteries comprising silicon nanoparticles, multi-walled carbon nanotube (MWCNTs) flakes, and a polymer binder which enables enhanced capacity retention of the hybrid composite anode. A process of fabrication of an anode for a lithium-ion battery is also disclosed, the process comprising the steps of fabricating carbon nanotube (CNT) mats on an anode current collector; dispersing the fabricated CNT mats in a mixture of deionized (DI) water to ethanol using a probe sonicator and magnetic stirrer; and adding silicon nanoparticles, multi-walled carbon nanotube (MWCNTs) flakes, and a polymer binder to the mixture, forming Si-MWCNT nanocomposite (SMC) anodes.

Abstract: The present invention relates to an electrode of a double-layer structure including a different type of particulate active material having a different average particle diameter, and a secondary battery including the same, and according to the present invention, the mechanical strength and stability of the electrode increases, and the secondary battery to which they are applied exhibits excellent discharge capacity.