Silicon-carbon composite material, negative electrode sheet, electrochemical apparatus, and electronic apparatus

Abstract

A silicon-carbon composite material includes elemental silicon and a carbon material. A Raman spectrum of the silicon-carbon composite material satisfies: 0.61<R/R′<0.78, where R is a ratio of IA to IB, and R′ is a ratio of ID to IG. IA represents an intensity of a peak at 521±5 cm−1 in the Raman spectrum of the silicon-carbon composite material; IB represents an intensity of a peak at 480±5 cm−1 in the Raman spectrum of the silicon-carbon composite material; ID represents an intensity of a peak at 1360±5 cm−1 in the Raman spectrum of the silicon-carbon composite material; and IG represents an intensity of a peak at 1580±5 cm−1 in the Raman spectrum of the silicon-carbon composite material.

Dependencies are inferred from the claim text.