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AssigneeKao Corporation
InventorsAtsushi Suzuki, Kuniyuki Nakanishi, Ryuichi Tsuji, Toru Nishimura, Tetsuya Kusakabe, Fumihide Shiga, Nobuyuki Isshiki
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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.
A lithium secondary battery, comprising a cathode, an anode and lithium ion conductive electrolytic solution, each electrode containing an active material capable of incorporating and releasing lithium ions,
A process for producing a lithium secondary battery, which comprises the steps of providing a cathode and an anode, each electrode containing an active material capable of incorporating and releasing lithium ions, and an electrolytic solution;
Dependencies are inferred from the claim text.