JCIPRNET
Composition for secondary battery negative electrode and negative electrode for secondary battery using the same and secondary battery
A composition for a secondary battery negative electrode including a carbonaceous material (a) and a silicon oxide structure (b), wherein the silicon oxide structure (b) includes a silicon oxide framework containing Si and O in its atomic composition and silicon-based nanoparticles that are chemically bonded to the silicon oxide framework as components, wherein the silicon oxide structure (b) is contained in a proportion of 15 mass % or more with respect to a total amount of the carbonaceous material (a) and the silicon oxide structure (b), and wherein the silicon oxide structure (b) satisfies the following conditions (i) to (iii): (i) having an atomic composition represented by a general formula SiOx2Hy2 (0.3<x2<1.5, 0.01<y2<0.35), (ii) having Si—H bonds, and (iii) being essentially free of carbon.
JNC CORPORATION JNC PETROCHEMICAL CORPORATION
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Tetsuro Miwako Soichiro Hirotsuna Keiichiro Yoshihito
Kizaki Nishimura Sato Yamada Kanao Takano