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Amorphous Metal Polysulfides: Electrode Materials with Unique Insertion/Extraction Reactions.
Sakuda, Atsushi; Ohara, Koji; Fukuda, Katsutoshi; Nakanishi, Koji; Kawaguchi, Tomoya; Arai, Hajime; Uchimoto, Yoshiharu; Ohta, Toshiaki; Matsubara, Eiichiro; Ogumi, Zempachi; Okumura, Toyoki; Kobayashi, Hironori; Kageyama, Hiroyuki; Shikano, Masahiro; Sakaebe, Hikari; Takeuchi, Tomonari.
Afiliação
  • Sakuda A; Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST) , 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
  • Ohara K; Office of Society-Academia Collaboration for Innovation, Kyoto University , Gokasho, Uji, Kyoto 611-0011, Japan.
  • Fukuda K; The Research & Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI) 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan.
  • Nakanishi K; Office of Society-Academia Collaboration for Innovation, Kyoto University , Gokasho, Uji, Kyoto 611-0011, Japan.
  • Kawaguchi T; Office of Society-Academia Collaboration for Innovation, Kyoto University , Gokasho, Uji, Kyoto 611-0011, Japan.
  • Arai H; Office of Society-Academia Collaboration for Innovation, Kyoto University , Gokasho, Uji, Kyoto 611-0011, Japan.
  • Uchimoto Y; Office of Society-Academia Collaboration for Innovation, Kyoto University , Gokasho, Uji, Kyoto 611-0011, Japan.
  • Ohta T; Graduate School of Human and Environmental Studies, Kyoto University , Nihonmatsu-cho, Yoshida, Sakyo-ku, Kyoto 606-8317, Japan.
  • Matsubara E; SR Center, Ritsumeikan University , 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577, Japan.
  • Ogumi Z; Office of Society-Academia Collaboration for Innovation, Kyoto University , Gokasho, Uji, Kyoto 611-0011, Japan.
  • Okumura T; Office of Society-Academia Collaboration for Innovation, Kyoto University , Gokasho, Uji, Kyoto 611-0011, Japan.
  • Kobayashi H; Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST) , 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
  • Kageyama H; Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST) , 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
  • Shikano M; Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST) , 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
  • Sakaebe H; Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST) , 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
  • Takeuchi T; Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST) , 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
J Am Chem Soc ; 139(26): 8796-8799, 2017 07 05.
Article em En | MEDLINE | ID: mdl-28618780
A unique charge/discharge mechanism of amorphous TiS4 is reported. Amorphous transition metal polysulfide electrodes exhibit anomalous charge/discharge performance and should have a unique charge/discharge mechanism: neither the typical intercalation/deintercalation mechanism nor the conversion-type one, but a mixture of the two. Analyzing the mechanism of such electrodes has been a challenge because fewer tools are available to examine the "amorphous" structure. It is revealed that the electrode undergoes two distinct structural changes: (i) the deformation and formation of S-S disulfide bonds and (ii) changes in the coordination number of titanium. These structural changes proceed continuously and concertedly for Li insertion/extraction. The results of this study provide a novel and unique model of amorphous electrode materials with significantly larger capacities.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2017 Tipo de documento: Article
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2017 Tipo de documento: Article