Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7740667 | Journal of Power Sources | 2013 | 4 Pages |
Abstract
Non-graphitizable carbon (hard carbon) as a negative electrode material for lithium-ion batteries is investigated by X-ray photoelectron spectroscopy, and hard X-ray photoelectron spectroscopy (HX-PES). HX-PES spectra have peaks of both the solid electrolyte interphase on the hard carbon surface and the hard carbon itself. The change in spectrum with state of charge is observed by HX-PES. Hard carbon has two types of lithium insertion site; between graphene sheets and into nano-scale voids. These spectroscopic results are consistent with the lithium insertion mechanism into hard carbon.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Hironobu Hori, Masahiro Shikano, Hironori Kobayashi, Shinji Koike, Hikari Sakaebe, Yoshiyasu Saito, Kuniaki Tatsumi, Hideki Yoshikawa, Eiji Ikenaga,