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Pure H⁻ conduction in oxyhydrides.
Kobayashi, Genki; Hinuma, Yoyo; Matsuoka, Shinji; Watanabe, Akihiro; Iqbal, Muhammad; Hirayama, Masaaki; Yonemura, Masao; Kamiyama, Takashi; Tanaka, Isao; Kanno, Ryoji.
Affiliation
  • Kobayashi G; Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan. Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012
  • Hinuma Y; Department of Materials Science and Engineering, Kyoto University, Sakyo, Kyoto 606-8501, Japan.
  • Matsuoka S; Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8502, Japan.
  • Watanabe A; Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444-8585, Japan. Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori
  • Iqbal M; Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8502, Japan.
  • Hirayama M; Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8502, Japan.
  • Yonemura M; Neutron Science Laboratory (KENS), Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 203-1, Shirakata, Tokai, Ibaraki 319-1106, Japan.
  • Kamiyama T; Neutron Science Laboratory (KENS), Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 203-1, Shirakata, Tokai, Ibaraki 319-1106, Japan.
  • Tanaka I; Department of Materials Science and Engineering, Kyoto University, Sakyo, Kyoto 606-8501, Japan.
  • Kanno R; Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama 226-8502, Japan. gkobayashi@ims.ac.jp kanno@echem.titech.ac.jp.
Science ; 351(6279): 1314-7, 2016 Mar 18.
Article in En | MEDLINE | ID: mdl-26989251
ABSTRACT
A variety of proton (H(+))-conducting oxides are known, including those used in electrochemical devices such as fuel cells. In contrast, pure H(-) conduction, not mixed with electron conduction, has not been demonstrated for oxide-based materials. Considering that hydride ions have an ionic size appropriate for fast transport and also a strong reducing ability suitable for high-energy storage and conversion devices, we prepared a series of K2NiF4-type oxyhydrides, La(2-x-y)Sr(x + y)LiH(1-x + y)O(3-y), in the hope of observing such H(-) conductors. The performance of an all-solid-state TiH2/o-La2LiHO3 (x = y = 0, o orthorhombic)/Ti cell provided conclusive evidence of pure H(-) conduction.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2016 Document type: Article
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2016 Document type: Article