Abstract: A method for preparing iron phosphide (FeP), a positive electrode of a lithium secondary battery including iron phosphide (FeP), for instance, prepared using the method, and a lithium secondary battery including the same. In the lithium secondary battery including the positive electrode using iron phosphide (FeP), the iron phosphide (FeP) adsorbs lithium polysulfide (LiPS) produced during a charge and discharge process of the lithium secondary battery, which is effective in increasing charge and discharge efficiency and enhancing lifetime properties of the battery.

Abstract: An electric vehicle is provided. The electric vehicle includes an electric battery powering a drive system of the vehicle. The battery has a housing and a plurality of cells within the housing. The cells are spaced apart by interconnectors. The electric vehicle also includes a coolant delivery. The coolant delivery delivers coolant to the interconnectors. An electric battery is also provided.

Abstract: A solvent-free polymer electrolyte having a polymer matrix which is conductive for lithium ions and a lithium salt, wherein the polymer matrix has at least one pseudo-polyrotaxane which includes at least one linear polymer and at least one ring-shaped molecule, and wherein the lithium salt is arranged in the polymer matrix and is at least partially chemically bonded to the polymer matrix, wherein the polymer matrix includes at least one pseudo-polyrotaxane with at least one completely or partially chemically modified cyclodextrin or at least one completely or partially chemically modified crown ether, in which the present hydroxyl groups of the cyclodextrin, or the scaffold of the crown ether, are/is partly or completely modified by functional groups, wherein the functional groups comprise alkyl, aryl, alkenyl, alkynyl groups (Cn, with n?5), or other short-chain polymer groups having up to 20 repeating units.

Abstract: A catholyte-like material including a cathode material and an interfacial additive layer for providing a lithium ion energy storage device having low impedance is disclosed. The interfacial additive layer, which is composed of vapor deposited iodine, is present between the cathode material and an electrolyte layer of the device. The presence of such an interfacial additive layer increases the ion and electron mobile dependent performances at the cathode material interface due to significant decrease in the resistance/impedance that is observed at the respective interface as well as the impedance observed in the bulk of the device. The catholyte-like material of the present application can be used to provide a lithium ion energy storage device having high charge/discharge rates and/or high capacity.

Abstract: The invention relates to a gas circulation system (1) for transporting heat from a high-temperature source (5) to a heat consumer (7), having a pipe system (2), through which a gaseous heat transfer medium flows, wherein part of the pipe system (2) is formed as a heat exchanger (4) following on from the high-temperature source (5), in which heat is transferred from the high-temperature source (5) into the heat transfer medium, and wherein part of the pipe system (2) is formed as a heat sink (6), in which the heat transferred to the heat transfer medium can be transferred to a heat consumer (7), or as a heat consumer. One or more gas flow enhancers (8) functioning according to the Coand? effect and/or the Venturi effect, which are supplied with pressurized impulse gas, are provided in the pipe system (2), in order to propel the heat transfer medium in the pipe system (2) in a flow direction (3).

Abstract: A battery structure includes a plurality of batteries each made of lithium-ion secondary battery; and a plurality of arrangement portions in which the plurality of batteries are arranged. The plurality of arrangement portions are divided into two groups of: a upper heat transfer group having heat transfer orders higher than a center value of the heat transfer orders, where the heat transfer orders are respective amount of heat transfer from the batteries being ranked in descending order; and a lower heat transfer group having the heat transfer orders lower than the center value. A battery among the plurality of batteries showing the highest value of a lithium deposition tolerance which represents a degree of lithium being unlikely to deposit during charge/discharge operation, is disposed in a high tolerance arrangement portion in the plurality of arrangement portions, the high tolerance arrangement portion belonging to the upper heat transfer group.

Abstract: Provided is an electrolyte solution for lithium secondary batteries that allows lowering the resistance of a lithium secondary battery, and suppressing characteristic degradation of the lithium secondary battery under high temperature. The electrolyte solution for lithium secondary batteries disclosed herein contains 0.05 mass % to 2.0 mass % of a compound represented by Formula (1) below. (In the formula, M+ represents a quaternary ammonium cation or a nitrogen-containing heteroaromatic ring cation, and R1 represents a C1-C5 alkyl group in which an ether oxygen is optionally inserted.

Abstract: The disclosure relates to a fuel cell stack and corresponding method of operating the fuel cell stack. The method comprises: determining a maximum allowable current that may be drawn from the fuel cell stack; repeatedly determining a magnitude of change to the prevailing maximum allowable current based on a prevailing allowable current ramp rate and an actual measured current of the fuel cell stack; updating the maximum allowable current according to the periodically determined magnitude of change; and controlling operating parameters of the fuel cell stack according to the prevailing maximum allowable current.

Abstract: The present invention is focused on the making of an integral tubular battery pack of hollow cylindrical battery cells better suited for thermal management. The hollow cylindrical cell structure is made of two concentric cylinders within which the electrode assembly is mounted. The inner hollow cylindrical cell structure exterior' surface is the newly added feature as it provides additional area for heat transfer with the cell' surrounding. The newly designed hollow cylindrical cells' lithium-ion battery packs are equipped with thermal management system and used in large storage facilities and industrial batteries applications such as EVs and large-scale machines in general.

Abstract: The present disclosure relates to a battery, including a first electrode layer, a second electrode layer, and an electrolyte disposed between the first and second electrode layers. The first electrode layer at least comprises a first electrode and a second electrode, which are spaced apart from each other. An electrolyte is disposed between the first electrode and the second electrode. A polarity of the first electrode is opposite of a polarity of the second electrode. The second electrode layer includes a third electrode disposed on an end opposite to the first electrode and a fourth electrode disposed on an end opposite to the second electrode. An electrolyte is disposed between the third electrode and the fourth electrode. A polarity of the third electrode is the same as that of the second electrode, and a polarity of the fourth electrode is the same as that of the first electrode.

Abstract: A power storage device including: at least one power storage module disposed between a first frame and a second frame disposed at an interval from each other, the power storage module including a plurality of power storage cells arranged in sequence, the first frame and the second frame provided in a vehicle or the power storage device; and a fixture, wherein: the power storage module is fixed to the first frame by the fixture, and is not fixed to the second frame.

Abstract: The disclosed technology generally relates to thin film-based energy storage devices, and more particularly to printed thin film-based energy storage devices. The thin film-based energy storage device includes a first current collector layer and a second current collector layer over an electrically insulating substrate and adjacently disposed in a lateral direction. The thin film-based energy storage device additionally includes a first electrode layer of a first type over the first current collector layer and a second electrode layer of a second type over the second current collector layer. A separator separates the first electrode layer and the second electrode layer. One or more of the first current collector layer, the first electrode layer, the separator, the second electrode layer and the second current collector layer are printed layers.

Abstract: An all-solid secondary battery, including: a first current collector; a pair of first active material layers disposed on opposite sides of the first current collector; a pair of solid electrolyte layers disposed on surfaces of the pair of first active material layers; a pair of second active material layers disposed on surfaces of the pair of solid electrolyte layers; and a pair of second current collectors disposed on surfaces of the pair of second active material layers, wherein a surface of one of the pair of second current collectors opposite to a surface of one of the pair of second active material layers does not comprise protrusions having a height of greater than about 8 micrometers.

Abstract: Circuit module for coupling a plurality of battery cell units. The circuit module includes a first set of terminals having a positive terminal and a negative terminal for coupling to a first battery cell unit, and a second set of terminals having a positive terminal and a negative terminal for coupling to a second battery cell unit. The positive terminal of the first set of terminals is coupled to the negative terminal of the second set of terminals either directly or via one or more passive components, and the negative terminal of the first set of terminals and the positive terminal of the second set of terminals each is coupled to a switching assembly. The switching assembly is operatively configured to selectively connect or bypass each one of the battery cell units. The invention is also directed to a battery system including the circuit module and a plurality of battery cell units.

Abstract: The disclosure relates to a proton exchange membrane fuel cell. The fuel cell includes: a container, wherein the container includes a reacting room, a fuel room connected to the reacting room through a fuel inputting hole, a fuel inputting door located on the fuel inputting hole, a waste collecting room connected to the reacting room through a waste outputting hole, a waste outputting door located on the waste outputting hole; a membrane electrode assembly located in the reacting room, wherein the membrane electrode assembly device defines a bellows and a pipe connected to the bellows and extending out of the reacting room, the reacting room is divided into a first electrode space outside the bellows and a second electrode space inside the bellows, the volume of the first electrode space and the second electrode space can be changed by deforming the bellows.

Abstract: A positive electrode material for a lithium ion secondary battery includes an olivine-type phosphate-based compound represented by General Formula LixAyDzPO4 and carbon, and, in transmission electron microscopic observation of a cross section of a secondary particle that is an agglomerate of primary particles of the olivine-type phosphate-based compound, a 300-point average value of filling rates of the carbon that fills insides of voids having a diameter of 5 nm or larger that are formed by the primary particles is 30 to 70%. A is any one of Co, Mn, Ni, Fe, Cu, and Cr, D is any one of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, and Y, and x, y, and z satisfy 0.9<x<1.1, 0<y?1.0, 0?z<1.0, and 0.9<y+z<1.1.

Abstract: The present application provide a spliced lithium strip, preparation method thereof, and related negative electrode plate, battery core, lithium ion battery, battery module, battery pack and apparatus. The spliced lithium strip is formed by splicing two or more base lithium strips, wherein the base lithium strip has a thickness fluctuation of less than 5%; the spliced lithium strip has a spliced area and a non-spliced area alternately distributed along the splicing direction, and the spliced area has a maximum thickness H and the non-spliced area has a minimum thickness L, satisfying ? H - L ? L × 1 ? 0 ? 0 ? % ? 6 ? % .

Abstract: The present application provides a preparation method for a solid electrolyte, including: acquiring an initial reaction mixture including a lithium precursor, a central atom ligand and an organic solvent; acquiring a modified solution including a borate ester and the organic solvent; mixing the initial reaction mixture and the modified solution, and drying to acquire an initial product; performing a grinding, cold press and heat treatment to the initial product to obtain the solid electrolyte. In the preparation method provided by the present application, a B and O co-doped sulphide solid electrolyte can be obtained by modifying the sulphide solid electrolyte with the borate ester as a doping raw material. The ionic conductivity of the prepared sulphide solid electrolyte is significantly improved, which is also conducive to improvement of energy density of the all-solid-state batteries.

Abstract: The present invention provides an energy storage device comprising a cathode region or other element. The device has a major active region comprising a plurality of first active regions spatially disposed within the cathode region. The major active region expands or contracts from a first volume to a second volume during a period of a charge and discharge. The device has a catholyte material spatially confined within a spatial region of the cathode region and spatially disposed within spatial regions not occupied by the first active regions. In an example, the catholyte material comprises a lithium, germanium, phosphorous, and sulfur (“LGPS”) containing material configured in a polycrystalline state. The device has an oxygen species configured within the LGPS containing material, the oxygen species having a ratio to the sulfur species of 1:2 and less to form a LGPSO material.

Abstract: Nanoporous oxygen reduction catalyst material comprising PtNiAu. The nanoporous oxygen reduction catalyst material is useful, for example, in fuel cell membrane electrode assemblies.