An air electrode material according to the present disclosure contains a plurality of composite particles, wherein each of the composite particles contains a core particle and a plurality of covering particles covering the core particle, the core particle is formed of a material with catalytic activity for an oxygen reduction reaction, the covering particles are formed of an electrically conductive material and are mechanically bonded to the core particles or other covering particles, and the median size of the core particles ranges from 100 to 1000 times the average primary particle size of the covering particles.

Provided is a lithium ion secondary battery which has a low internal resistance in a low-SOC region and a sufficiently large amount of gas generated during overcharge. The lithium ion secondary battery disclosed herein includes an electrode body having a positive electrode and a negative electrode, and a nonaqueous electrolytic solution. The lithium ion secondary battery further includes a pressure-type safety mechanism. The nonaqueous electrolytic solution includes a gas generating agent. The positive electrode has a positive electrode active material layer including a positive electrode active material. The positive electrode active material includes a lithium transition metal composite oxide represented by LiNi.sub.aCo.sub.bMn.sub.cO.sub.2 wherein a, b and c satisfy the following conditions: 0.35a0.45, 0.15b0.25, 0.35c0.45, and a+b+c=1, and a lithium transition metal composite oxide represented by LiNi.sub.xCo.sub.yMn.sub.zO.sub.2 wherein x, y and z satisfy the following conditions: 0.35x0.45, 0.45y0.55, 0.05z0.15, and x+y+z=1, and the mass ratio of the oxides is 60:40 to 85:15.

A lithium-ion battery module with large-capacity and without parallel batteries is provided. The lithium-ion battery module includes a lithium-ion battery pack with large-capacity and without parallel group, and a battery management unit. To this end, the lithium-ion battery pack is defined by at least two single polymer lithium-ion batteries connected in series, each with a capacity of 50-2000 AH. The battery management unit includes a master module, a data acquisition module, an equalizer, and detecting components which include at least one current sensor, at least two voltage sensors and at least two temperature sensors. The lithium-ion battery module allows for the working voltage and current of each single polymer lithium-ion battery to be monitored in real time, while also operating at a low temperature thanks to a low internal resistance and good heat conducting qualities provided at the battery module.

A rechargeable lithium-ion cell has a cell capacity and includes a positive electrode having a recharged potential and a negative electrode. The rechargeable lithium-ion cell also includes a charge-carrying electrolyte. The charge-carrying electrolyte includes a charge-carrying medium and a lithium salt. The rechargeable lithium-ion cell also includes a redox shuttle having the following structure. ##STR00001##

The present application relates to the field of battery production techniques and, particularly relates to an end plate for battery module and a battery module. The end plate includes a panel, an elastic member and a buffer plate, the panel and the buffer plate are stacked, a supporting hole is defined in the buffer plate, the supporting hole is a through hole along a thickness direction of the buffer plate, the elastic member is filled in the supporting hole, and an end of the elastic member abuts against the panel tinder such structure, the end plate can be avoided from directly squeezing the cell in the battery module, so as to protect the cell and guarantee safety of the battery module.

Disclosed herein is a stacked/folded type electrode assembly configured to have a structure in which two or more unit cells, each of which includes a separator disposed between a positive electrode and a negative electrode, each having an electrode mixture including an electrode active material applied to a current collector, are wound using a sheet type separation film, wherein the positive electrode is configured to have a structure in which a positive electrode mixture is coated on an aluminum foil as the current collector and the negative electrode is configured to have a structure in which a negative electrode mixture is coated on a metal foil, other than the aluminum foil, as the current collector, the unit cells include one or more full-cells and/or bi-cells, one of the unit cells located at each outermost side of the electrode assembly is configured such that one outermost electrode of the unit cell is a single-sided electrode, the single-sided electrode being configured such that the electrode mixture is applied only to one major surface of the current collector facing the separator, and the separation film has higher elongation than the separator.

A method of manufacturing a nonaqueous electrolyte secondary battery includes: manufacturing a positive electrode sheet by forming a positive electrode active material layer, which includes trilithium phosphate, on a positive electrode current collector foil; accommodating the positive electrode sheet, a negative electrode sheet, and an electrolytic solution in a battery case; and charging a battery after the accommodation. During the manufacturing of the positive electrode sheet, a positive electrode active material is a composite oxide including at least lithium and manganese. During the manufacturing of the positive electrode sheet, a conductive additive is obtained by attaching at least one of manganese or manganese oxide to a surface of a carbon material.

A secondary battery may include a fuse formed in an electrode terminal. In exemplary embodiments, the secondary battery may include an electrode assembly including a first electrode plate, a second electrode plate and a separator, a current collector plate electrically connected to the electrode assembly, a case accommodating the electrode assembly, the current collector plate and an electrolyte, and an electrode terminal electrically connected to the current collector plate and protruded to an outside of the case, wherein the electrode terminal portion includes a protrusion part electrically connected to the current collector plate in a normal condition and selectively electrically disconnectable therefrom.

A dispenser for dispensing charged battery units into a tank of an electrically powered apparatus. The dispenser comprises a dispensing container for accommodating a plurality of charged battery units, and a conduit having a first end coupled to the dispensing container and a second end adapted to be coupled to a tank to be filled. The dispenser further comprises a dispensing mechanism for selectively dispensing battery units to the tank through said conduit, the dispensing mechanism comprising a metering unit for monitoring and controlling the number and or state of battery units dispensed.

An electrode assembly for a high cycling battery is disclosed. The electrode assembly includes a separator envelope comprising a backweb of material. The backweb has opposing sides, a contact area including a plurality of vertical, continuous major ribs of substantially the same height spaced across the contact area and projecting from one of the opposing sides forming acid conduits therebetween. A rim area is provided on each respective end of the contact area and has a plurality of vertical shoulder ribs. The backweb of material is folded and each rim area, aligned by the folding of the backweb, at least partially secured to itself to form the separator envelope. A negative electrode is received in the separator envelope and a positive electrode is positioned adjacent to the negative electrode, separated from the negative electrode by the separator envelope. A separator and plate assembly and a lead-acid battery are also disclosed.