A pouch cell includes a copper foil forming a pouch, an active material layer adjacent to the copper foil inside the pouch forming a cathode with the copper, and a lithium-based anode inside the pouch. The cell includes a separator interposing the one active material layer and the lithium-based anode, and an electrolyte.

Provided are methods of preparing a separator/anode assembly for use in an electric current producing cell, wherein the assembly comprises an anode current collector layer interposed between a first anode layer and a second anode layer and a porous separator layer on the side of the first anode layer opposite to the anode current collector layer, wherein the first anode layer is coated directly on the separator layer.

A lithium battery including a cathode, an anode, a liquid-impermeable ion-conductive membrane between the cathode and the anode, and an interlayer including a metal-carbon composite between the anode and the liquid-impermeable ion-conductive membrane, wherein the metal-carbon composite includes a carbonaceous material, a metal chemically bonded to the carbonaceous material, and a metal sulfide, a metal fluoride, or a combination thereof chemically bonded to the carbonaceous material.

The present application relates to an electrode comprising pillars of conductors covered with at least two layers for improving the deposition of lithium, and the electrochemical cells and batteries comprising same.

A positive electrode active material that is used in a high-temperature operation type lithium ion solid secondary battery, wherein the positive electrode active material is made of oxide particles, which contains a first transition element and does not include an alkali metal.

Provided are: a nonaqueous electrolytic solution for a nonaqueous electrolytic solution battery including a positive electrode and a negative electrode that are capable of occluding and releasing metal ions, which nonaqueous electrolytic solution is characterized by containing a compound represented by Formula (1) along with an alkali metal salt and a nonaqueous solvent.

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The present disclosure relates to a solid state battery comprising silicon (Si) as a negative electrode active material. The solid state battery according to the present disclosure does not comprise a conductive material and a solid electrolyte in the negative electrode and comprise a minimum amount of binder. According to this structural feature, the battery according to the present disclosure has good electrical and chemical properties including heat resistant stability, energy density, life characteristics and Coulombic efficiency.

There is provided a lithium metal secondary battery including a positive electrode, a negative electrode, and a solid electrolyte layer between the positive electrode and the negative electrode, the negative electrode including a negative electrode current collector and a protective layer, and the protective layer including a metal capable of being alloyed with lithium and having a volumetric capacity density of 1000 mAh/L or more.

A process for inerting electrochemical accumulators, especially metal-ion accumulators, by initial immersion in a solution of calcium chloride at low temperature, followed by electrical short-circuiting in preparation for their shredding.

The invention consists essentially of the generation of a short circuit in electrochemical accumulators immersed in an aqueous CaCl.sup.2 solution, the low temperature of which in the liquid state, typically -50° C., ensures thermal absorption of the heat evolved by the accumulators and therefore reliably prevents them from undergoing thermal runaway, said short-circuiting taking place prior to, and separately from, the shredding of the accumulators.

Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein a BET specific surface area of the anode active material particles is 1.9 m.sup.2/g or more and 14.2 m.sup.2/g or less.