Disclosed is a sulfide solid-state battery produced via a first step of doping at least one material selected from graphite and lithium titanate with lithium, to obtain a predoped material; a second step of mixing the sulfide solid electrolyte, the silicon-based active material, and the predoped material, to obtain the anode mixture; and a third step of layering the anode mixture over the surface of the anode current collector that contains copper, to obtain the anode.

A method of producing a structured composite material is described. A porous media is provided, an electrically conductive material is deposited on surfaces or within pores of the plurality of porous media particles, and an active material is deposited on the surfaces or within the pores of the plurality of porous media particles coated with the electrically conductive material to coalesce the plurality of porous media particles together and form the structured composite material.

An all solid battery includes: a solid electrolyte layer including an oxide-based electrolyte; a first electrode layer that is formed on a first face of the solid electrolyte layer and includes a ceramic grain; and a second electrode layer that is formed on a second face of the solid electrolyte layer and includes a ceramic grain, wherein at least one of the first electrode layer and the second electrode layer includes a micro particle carbon and a board-shaped carbon.

An all solid battery includes: a solid electrolyte layer including an oxide-based electrolyte; a first electrode layer that is formed on a first face of the solid electrolyte layer and includes a ceramic grain; and a second electrode layer that is formed on a second face of the solid electrolyte layer and includes a ceramic grain, wherein at least one of the first electrode layer and the second electrode layer includes a micro particle carbon and a board-shaped carbon.

A sulfur-carbon composite including a porous carbon material; a coating layer on a surface of the porous carbon material, the coating layer including a compound with electrolyte solution impregnation property; and sulfur, a method for preparing the same, and a positive electrode for a lithium-sulfur battery and a lithium-sulfur battery including the same are disclosed.

Disclosed is a tungsten-doped lithium manganese iron phosphate-based particulate for a cathode of a lithium-ion battery. The particulates include a composition represented by a formula Li.sub.xMn.sub.1-y-z-fFe.sub.yM.sub.zW.sub.fP.sub.aO.sub.4a±pC, wherein x, y, z, f, a, p, and M are as defined herein. Also disclosed is a powdery material including the particulates, and a method for preparing the powdery material.

Provided is an electrode including a metal foam as a current collector for obtaining a lithium-ion secondary battery having a high energy density. More particularly, provided is a lithium-ion secondary battery electrode that achieves improved input/output properties (power density) and improved durability, and a lithium-ion secondary battery including the lithium-ion secondary battery electrode. An electrode is formed by providing, in an electrode layer, a region having an excessive amount of an electrolytic solution by forming a region where a current collector made of a metal foam contains no electrode material mixture.

The present invention relates to a liquid composition for forming an electrochemical device contains one or both of an active material or an electrolyte;

a dispersion medium; and a polymer, wherein the polymer contains constituent units having one or both of an amide bond or an imide bond, and having a group represented by a following general formula (I):

##STR00001##

wherein X is an oxygen atom, or a carbon atom substituted with a hydrogen atom or an alkyl group, wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently hydrogen atoms, substituted or unsubstituted alkyl groups, or substituted or unsubstituted cycloalkyl groups, and m and n are positive integers.

The present invention relates to a liquid composition for forming an electrochemical device contains one or both of an active material or an electrolyte;

a dispersion medium; and a polymer, wherein the polymer contains constituent units having one or both of an amide bond or an imide bond, and having a group represented by a following general formula (I):

##STR00001##

wherein X is an oxygen atom, or a carbon atom substituted with a hydrogen atom or an alkyl group, wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are each independently hydrogen atoms, substituted or unsubstituted alkyl groups, or substituted or unsubstituted cycloalkyl groups, and m and n are positive integers.

As anode having an anode material, a current collector, a graphene-based material, and the graphene-based material covers the anode material.