• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2014 Fiscal Year Final Research Report

Silicon-based anodes prepared by gas-deposition method for next generation lithium-ion battery

Research Project

  • PDF
Project/Area Number 24350094
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Functional materials/Devices
Research InstitutionTottori University

Principal Investigator

SAKAGUCHI Hiroki  鳥取大学, 工学(系)研究科(研究院), 教授 (00202086)

Co-Investigator(Kenkyū-buntansha) USUI Hiroyuki  鳥取大学, 大学院工学研究科, 准教授 (60423240)
Project Period (FY) 2012-04-01 – 2015-03-31
Keywordsリチウム二次電池 / 負極 / ケイ素 / 合金 / シリサイド / ガスデポジション法 / 厚膜
Outline of Final Research Achievements

As an anode of Li-ion battery, Si has a problem of a poor cyclability due to its large volume changes during charge-discharge and a resulting stress. We prepared composite thick-film electrodes consisting of rare-earth metal silicides and elemental Si by a gas-deposition method, and investigated their anode performances. Among various rare-earth silicides/Si electrodes, Gd-Si/Si electrode exhibited the most excellent cycling performance. We revealed that the excellent performance was caused by four properties of Gd-Si: a moderate Li-storage ability, a high electronic conductivity, a high thermodynamic stability, and a more elastic property than other silicides. This elastic property probably relaxes the stress during charge-discharge.

Free Research Field

無機材料化学,電気化学

URL: 

Published: 2016-06-03  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi