Kao Corporation

Fumihide Shiga

Atsushi Suzuki

Yukihiro Nakano

Toru Nishimura

Nobuyuki Isshiki

Kuniyuki Nakanishi

Tetsuya Kusakabe

Ryuichi Tsuji

A water-based ink composition comprising a polybasic acid, an ionic polymer and a coloring agent. The water-based ink composition is used for a water-based ink for inkjet recording.

Water-based ink composition

The present invention relates to a lithium secondary battery with a cathode and an anode, each electrode containing an active material capable of incorporating and releasing lithium ions. The anode includes a sintered material which contains 50 to 99 % by weight of silicon and 1 to 50% by weight of carbon material, and has an electrical conductivity not less than 1 S/cm. By employing the anode including the sintered material containing silicon as the anode active material and carbon material, an increased packing density of the active material and an increased capacity per volume can be obtained. Furthermore, the anode conductivity of not less than 1S/cm can provide a high capacity and improved cycle property.

Lithium secondary cell and method for manufacturing the same

Growing community of inventors

Wakayama, Japan

Fumihide Shiga