Mixed alkali-ion transport and storage in atomic-disordered honeycomb layered NaKNi2TeO6

Titus Masese (), Yoshinobu Miyazaki (), Josef Rizell, Godwill Mbiti Kanyolo (), Chih-Yao Chen, Hiroki Ubukata, Keigo Kubota, Kartik Sau, Tamio Ikeshoji, Zhen-Dong Huang (), Kazuki Yoshii, Teruo Takahashi, Miyu Ito, Hiroshi Senoh, Jinkwang Hwang, Abbas Alshehabi, Kazuhiko Matsumoto, Toshiyuki Matsunaga, Kotaro Fujii, Masatomo Yashima, Masahiro Shikano, Cédric Tassel, Hiroshi Kageyama, Yoshiharu Uchimoto, Rika Hagiwara and Tomohiro Saito ()
Additional contact information
Titus Masese: National Institute of Advanced Industrial Science and Technology (AIST)
Yoshinobu Miyazaki: Sumika Chemical Analysis Service (SCAS), Ltd.
Josef Rizell: National Institute of Advanced Industrial Science and Technology (AIST)
Godwill Mbiti Kanyolo: The University of Electro-Communications
Chih-Yao Chen: AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL)
Hiroki Ubukata: Kyoto University
Keigo Kubota: AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL)
Kartik Sau: National Institute of Advanced Industrial Science and Technology (AIST)
Tamio Ikeshoji: Tohoku University
Zhen-Dong Huang: Nanjing University of Posts and Telecommunications (NUPT)
Kazuki Yoshii: National Institute of Advanced Industrial Science and Technology (AIST)
Teruo Takahashi: Sumika Chemical Analysis Service (SCAS), Ltd.
Miyu Ito: Sumika Chemical Analysis Service (SCAS), Ltd.
Hiroshi Senoh: National Institute of Advanced Industrial Science and Technology (AIST)
Jinkwang Hwang: Kyoto University
Abbas Alshehabi: National Institute of Technology (KOSEN)
Kazuhiko Matsumoto: AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL)
Toshiyuki Matsunaga: Graduate School of Human and Environmental Studies, Kyoto University
Kotaro Fujii: School of Science, Tokyo Institute of Technology
Masatomo Yashima: School of Science, Tokyo Institute of Technology
Masahiro Shikano: National Institute of Advanced Industrial Science and Technology (AIST)
Cédric Tassel: Kyoto University
Hiroshi Kageyama: Kyoto University
Yoshiharu Uchimoto: Graduate School of Human and Environmental Studies, Kyoto University
Rika Hagiwara: AIST-Kyoto University Chemical Energy Materials Open Innovation Laboratory (ChEM-OIL)
Tomohiro Saito: Sumika Chemical Analysis Service (SCAS), Ltd.

Nature Communications, 2021, vol. 12, issue 1, 1-16

Abstract: Abstract Honeycomb layered oxides constitute an emerging class of materials that show interesting physicochemical and electrochemical properties. However, the development of these materials is still limited. Here, we report the combined use of alkali atoms (Na and K) to produce a mixed-alkali honeycomb layered oxide material, namely, NaKNi2TeO6. Via transmission electron microscopy measurements, we reveal the local atomic structural disorders characterised by aperiodic stacking and incoherency in the alternating arrangement of Na and K atoms. We also investigate the possibility of mixed electrochemical transport and storage of Na+ and K+ ions in NaKNi2TeO6. In particular, we report an average discharge cell voltage of about 4 V and a specific capacity of around 80 mAh g–1 at low specific currents (i.e.,

Date: 2021
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DOI: 10.1038/s41467-021-24694-5

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