"熱分解炭素をコーティングした難黒鉛化性炭素繊維のリチウムイオン電池負極特性"

Abstract

"Pyrolytic carbon (pyrocarbon) was coated on the low crystalline non-graphitizing carbon fiber for the anode material of lithium-ion battery at 950°C from C3H8(30%)-H2 gas system using pressure-pulsed chemical vapor infiltration. Carbon fiber was coated with the dense pyrocarbon film having the laminar texture and the low surface area of 1.9m^2g^-1. lt was revealed from XRD and Raman spectroscopy that the crystallinity of pyrocarbon is higher than that of the core carbon. Irreversible capacity was reduced by coating with 8 mass% pyrocarbon. Under the condition of high current density in charge-discharge cycles, the pyrocarbon-coated sample showed the excellent anode performance compared with the original carbon fiber."