論文

2014年

Surface Coating Layer on Li Metal for Increased Cycle Stability of Li-O-2 Batteries

JOURNAL OF THE ELECTROCHEMICAL SOCIETY
  • Il Chan Jang
  • ,
  • Shintaro Ida
  • ,
  • Tatsumi Ishihara

161
5
開始ページ
A821
終了ページ
A826
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1149/2.087405jes
出版者・発行元
ELECTROCHEMICAL SOC INC

The effects of polymer coating on the cycle stability of Li-O-2 batteries were investigated. Capacity fading is much higher with increasing Li utilization; however, it was found that coating the Li metal with poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) highly and effectively increased the cycle stability of a Li-O-2 battery. This indicates that the coating may prevent shape changes of the metal during discharge and charge cycles. Impedance analysis suggested that the interfacial resistance on the anode compartment explained the low cycle stability in cells containing pristine Li. The PVdF-HFP coating suppressed this interfacial resistance during discharge-charge cycles performed at current densities exceeding 0.1 mA/cm(2). Microscopy studies showed that lithium morphology deposited on the polymer coated electrode showed suppressed needle-like dendrite formation explaining the increase in the cycle stability of Li-O-2 batteries. (C) 2014 The Electrochemical Society. All rights reserved.

リンク情報
DOI
https://doi.org/10.1149/2.087405jes
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000335292500024&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84904808422&origin=inward
ID情報
  • DOI : 10.1149/2.087405jes
  • ISSN : 0013-4651
  • eISSN : 1945-7111
  • Web of Science ID : WOS:000335292500024

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