To provide an organic-electrolyte battery having superior discharge cycling performance, high-rate discharge characteristics, and continuous charge characteristics at high temperatures.
A negative electrode for a nonaqueous electrolyte secondary battery uses, as the active materials, an amorphous phase and a crystalline alloy phase of Si obtained by a mechanical alloying method by mixing Si obtained, by mixing an N-type semiconductor Si doped with at least P or Sb and a P-type semiconductor Si doped with B with a metal that can be alloyed with Si. A nonaqueous electrolyte secondary battery is such that a power generating component is enclosed, together with a nonaqueous electrolyte inside an outer package, wherein the power generating component is such that the negative electrode and a positive electrode that can absorb and discharge lithium ions are disposed opposite via a separator.
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Toshie cotton
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Kentaro Fujii
Ikuro Terauchi