Negative electrode for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery including the same

To provide a negative electrode for nonaqueous electrolyte secondary batteries, by which the structural deterioration of the electrode is suppressed and cycle characteristics can be improved by absorbing the expansion and contraction of a silicon-based active material placed in the inside of a curre...

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Hauptverfasser: Ikeuchi, Yuta, Yamashita, Naoto, Tanaka, Toshimitsu, Tanaami, Kiyoshi, Mukai, Takashi, Sakamoto, Taichi
Format: Patent
Sprache:eng
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Zusammenfassung:To provide a negative electrode for nonaqueous electrolyte secondary batteries, by which the structural deterioration of the electrode is suppressed and cycle characteristics can be improved by absorbing the expansion and contraction of a silicon-based active material placed in the inside of a current collector made of porous metal, and a nonaqueous electrolyte secondary battery including the same. A negative electrode for nonaqueous electrolyte secondary batteries, having a current collector made of porous metal, and a negative electrode material placed in pores of the porous metal, the negative electrode material including a negative electrode active material including a silicon-based material; a skeleton forming agent including a silicate having a siloxane bond; a conductive additive; a binder; and a fibrous material.