論文

査読有り
2017年5月

Enhanced Li-Ion Accessibility in MXene Titanium Carbide by Steric Chloride Termination

ADVANCED ENERGY MATERIALS
  • Satoshi Kajiyama
  • ,
  • Lucie Szabova
  • ,
  • Hiroki Iinuma
  • ,
  • Akira Sugahara
  • ,
  • Kazuma Gotoh
  • ,
  • Keitaro Sodeyama
  • ,
  • Yoshitaka Tateyama
  • ,
  • Masashi Okubo
  • ,
  • Atsuo Yamada

7
9
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1002/aenm.201601873
出版者・発行元
WILEY-V C H VERLAG GMBH

Pseudocapacitance is a key charge storage mechanism to advanced electrochemical energy storage devices distinguished by the simultaneous achievement of high capacitance and a high charge/discharge rate by using surface redox chemistries. MXene, a family of layered compounds, is a pseudocapacitor-like electrode material which exhibits charge storage through exceptionally fast ion accessibility to redox sites. Here, the authors demonstrate steric chloride termination in MXene Ti2CTx (T-x: surface termination groups) to open the interlayer space between the individual 2D Ti2CTx units. The open interlayer space significantly enhances Li-ion accessibility, leading to high gravimetric and volumetric capacitances (300 F g(-1) and 130 F cm(-3)) with less diffusion limitation. A Li-ion hybrid capacitor consisting of the Ti2CTx negative electrode and the LiNi1/3Co1/3Mn1/3O2 positive electrode displays an unprecedented specific energy density of 160 W h kg(-1) at 220 W kg(-1) based on the total weight of positive and negative active materials.

リンク情報
DOI
https://doi.org/10.1002/aenm.201601873
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000401719900004&DestApp=WOS_CPL
URL
http://orcid.org/0000-0002-2200-7524
ID情報
  • DOI : 10.1002/aenm.201601873
  • ISSN : 1614-6832
  • eISSN : 1614-6840
  • ORCIDのPut Code : 34137017
  • Web of Science ID : WOS:000401719900004

エクスポート
BibTeX RIS