MISC

2004年10月

Structures and electrochemical properties of pyrolytic carbon films infiltrated from gas phase into electro-conductive substrates derived from wood

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
  • Y Ohzawa
  • ,
  • M Mitani
  • ,
  • JL Li
  • ,
  • T Nakajima

113
1
開始ページ
91
終了ページ
98
記述言語
英語
掲載種別
DOI
10.1016/j.mseb.2004.07.006
出版者・発行元
ELSEVIER SCIENCE SA

Using the pressure-pulsed chemical vapor infiltration technique, pyrolytic carbon (pyrocarbon) films were deposited into two sorts of conductive porous substrates, that is, the carbonized wood (A) and the TiN-coated wood (B). Structures and electrochemical properties were investigated as the negative electrodes of lithium-ion secondary battery. The electrodes had the three-dimensionally continuous current paths in the pyrocarbon-based anodes without the organic binders and the additional conductive fillers. The pyrocarbon films adhered tightly to the carbonized wood or TiN as current collector. These macro-structures of electrodes were effective in improving the high rate property. The sort of substrates affected the nano-structure of pyrocarbon. The pyrocarbon in sample (A) had the relatively high crystallinity, whereas the pyrocarbon in sample (B) was disordered. The capacity of pyrocarbon in sample (B) was higher than that of sample (A), reflecting the disordered microstructure of pyrocarbon film (B). However, sample (A) showed higher Coulombic efficiency at first cycle (i.e. 87%) than that of sample (B), which would result from the high crystallinity, laminar microstructure and low surface area of pyrocarbon in sample (A). (C) 2004 Elsevier B.V. All rights reserved.

リンク情報
DOI
https://doi.org/10.1016/j.mseb.2004.07.006
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000224050000016&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.mseb.2004.07.006
  • ISSN : 0921-5107
  • Web of Science ID : WOS:000224050000016

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