Sanyo Electric Co., Ltd.

Masahide Miyake

Masahisa Fujimoto

Shin Fujitani

Yasuyuki Kusumoto

Hisaki Tarui

Hideyuki Koga

Masaharu Itaya

Hiroaki Ikeda

Toshiyuki Nohma

Yasuhiro Yamauchi

Yoshinori Kida

Toyoki Fujihara

Shigeki Matsuta

Seiji Omura

Takao Inoue

Masahiro Iyori

Takeshi Yoshida

Hirofusa Tanaka

Naoki Terada

A nonaqueous secondary battery includes a current cutoff mechanism that cuts off a current in a short period of time in response to a rise in pressure inside a battery outer body in at least one of a conductive path through which a current is taken out from a positive electrode plate to outside of the battery and a conductive path through which a current is taken out from a negative electrode plate to outside of the battery. At least one type selected from an oligomer containing a cyclohexyl group and a phenyl group, a modified product of the oligomer containing a cyclohexyl group and a phenyl group, a polymer containing a cyclohexyl group and a phenyl group, and a modified product of the polymer containing a cyclohexyl group and a phenyl group is present on the surface of the positive electrode plate.

Nonaqueous electrolyte secondary battery and method for manufacturing the same

A method of manufacturing an electrode active material particle for a rechargeable battery wherein a layer of an active material capable of being alloyed with Li is formed on a surface of a metal particle incapable of being alloyed with Li and then a heat treatment is conducted to diffuse the active material into the metal particle so that the resulting active material particle has a concentration profile in which a concentration of a metal element of the metal particle decreases from an interior toward the surface.

Method of manufacturing an electrode active material particle for a rechargeable battery

A non-aqueous electrolyte secondary cell is provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte solution, wherein said positive electrode comprises sulfur and said non-aqueous electrolyte solution comprises a room-temperature molten salt having a melting point of 60&#xb0; C. or less.

Non-aqueous electrolytic secondary battery

In a non-aqueous electrolyte secondary cell including a positive electrode, a negative electrode and a non-aqueous electrolyte, the negative electrode includes a material capable of absorbing or releasing lithium and wherein the non-aqueous electrolyte contains a room-temperature molten salt having a melting point of 60&#xb0; C. or less and a lithium salt.

Non-aqueous electrolyte secondary cell

A rechargeable battery includes electrodes containing particles of an active material capable of being alloyed with Li. A metallic element that is not alloyed with Li is distributed by its diffusion in particles of the active material.

A nonaqueous electrolyte battery which comprises a positive electrode including carbon fluoride or sulfur as an active material, a negative electrode including calcium as an active material, and an electrolyte including an imide salt of calcium or a sulfonic acid salt of calcium.

Nonaqueous electrolyte battery

In a non-aqueous electrolyte battery provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte using an organic solvent, at least one type of ferrite, FeS, and a transition metal oxide (except for LiCoO) having crystal structure of space group R3m is used as a positive electrode material for a positive electrode, and a negative electrode material containing lithium is used for a negative electrode.

Non-aqueous electrolyte battery

A non aqueous electrolyte secondary battery comprises a positive electrode made from a material which is capable of occluding and discharging anions, a negative electrode made from a material which is capable of occluding and discharging cations, and a non aqueous electrolyte containing a room temperature molten salt having a melting point of not greater than 60&#xb0; C.

Nonaqueous electrolyte secondary battery with a molten salt electrolyte

An electrolyte containing calcium bistrifluoromethanesulfonimide [Ca((CFSO)N)] for a nonaqueous battery. The calcium bistrifluoromethanesulfonimide is soluble in an organic solvent and a molten salt having a melting point of not greater than 60&#xb0; C.

Electrolyte for a nonaqueous battery

The present invention provides an improved electrode material for a lithium secondary battery to provide a lithium secondary battery that is light in weight and has high energy density. Sulfur and a catalyst material such as active carbon, and the like, that reduces activation energy of an addition reaction of lithium to sulfur and allows the reaction to occur at not greater than 60&deg; C., are included in the electrode material.

Growing community of inventors

Kobe, Japan

Masahide Miyake