Ube Industries, Inc.

Other

Fujitsu Corporation

Bridgestone Corporation

Ishihara Sangyo Kaisha, Ltd.

Tpr Co., Ltd.

Saga Prefectural Regional Industry Support Center

Toc Capacitor Co., Ltd.

Masaki Yoshio

Hideya Yoshitake

Hiroyoshi Nakamura

Hitoshi Nakamura

Tsutomu Miyashita

Takahiro Kawagoe

Takao Ogino

Shuji Tanaka

Hiroshi Horiuchi

Masayuki Nishio

Hirofumi Takemoto

Naoya Kobayashi

Tokuo Suita

Masami Tsutsumi

Masatoshi Honma

Tsunao Matsuura

Tadaaki Miyazaki

Ken Nakamura

Toshihiko Kawamura

Nariaki Moriyama

Tomoyuki Sotokawa

Hirofumi Taniguchi

Keiichirou Koyashiki

Kenji Fukuda

Yasufumi Hideshima

Hideyuki Noguchi

This electric double layer capacitor is an electric double layer capacitor capable of maintaining a discharge capacity retention rate of 80% or more in a constant current and constant voltage continuous charge test at 60&#xb0; C. and 3.5 V for 1,000 hours or more,

Electric double layer capacitor

There is disclosed a conductive resin composition, comprising: (a) a resin component, and (b) a fine carbon fiber dispersed in the resin component, wherein a graphite-net plane consisting solely of carbon atoms forms a temple-bell-shaped structural unit comprising closed head-top part and body-part with open lower-end, 2 to 30 of the temple-bell-shaped structural units are stacked sharing a common central axis to form an aggregate, and the aggregates are connected in head-to-tail style with a distance to form the fiber. The resin composition has high conductivity while maintaining the original physical properties of the resin.

Conductive resin composition

Disclosed is a storage device comprising a positive electrode material containing graphite; a negative electrode material containing an oxide of at least one metal element selected from Ti, Zr, V, Cr, Mo, Mn, Fe, Co, Ni, Cu, Zn, Sn, Sb, Bi, W and Ta, which may preferably contains a metal oxide containing at least Ti as a metal element; and an electrolyte solution. This storage device has high capacitance and high discharge voltage, thereby having high energy. Consequently, this storage device can have high energy density, while being excellent in cycle performances and rate performances.

Storage device

To provide electric double layer capacitors which have large electrostatic capacitances. Graphite with a BET surface area of from 10 to 300 m/g, wherein the graphite has an energy storing ability of 10 to 200 mAh at a voltage of 1 V or more based on the oxidation-reduction potential of lithium.

Power storage element and electric double layer capacitor

A manufacturing method of spinel type manganese oxide for a lithium ion secondary cell, includes pre-firing a mixture of lithium salt including lithium carbonate, manganese oxide, and heterogeneous metal, firing the mixture at 900 to 1200&deg; C. to form a raw material, adding in the raw material at least one of crystal growth accelerators selected from the group consisting of lithium hydroxide, lithium sulfide and a mixture thereof, and firing the resulting compound at 750 to 850&deg; C. to form an excess lithium heterogeneous metal-doped spinel compound having a BET specific surface area of 0.5 m /g or less.

Manufacturing method of spinel lithium manganese oxide for lithium secondary cell

An ion-conductor for a lithium secondary battery comprising at least an electrolyte and an additive;

Ion-conductor for lithium secondary battery and lithium secondary

An electrolyte for a lithium secondary battery comprising an organic solvent containing an aromatic carbonate and a lithium salt dissolved in the organic solvent.

Electrolyte for lithium secondary battery

In a nonaqueous electrolyte cell comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte containing an alkali metal ion, an electrolytic manganese dioxide which is prepared by subjecting a manganese dioxide-forming electrolytic solution to electrolysis while introducing a gas therein is used as an active material for the positive electrode.

Nonaqueous electrolyte cell

Growing community of inventors

Saga, Japan

Masaki Yoshio