Mixed alkali-ion transport and storage in atomic-disordered honeycomb layered NaKNi2 TeO6
Journal article, 2021
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., < 10 mA g–1) when a NaKNi2TeO6-based positive electrode is combined with a room-temperature NaK liquid alloy negative electrode using an ionic liquid-based electrolyte solution. These results represent a step towards the use of tailored cathode active materials for “dendrite-free” electrochemical energy storage systems exploiting room-temperature liquid alkali metal alloy materials.
Author
Titus Masese
Kyoto University
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)
Chalmers, Physics, Materials Physics
Godwill Mbiti Kanyolo
University of Electro-Communications
Chih Yao Chen
Kyoto University
Hiroki Ubukata
Kyoto University
Keigo Kubota
Kyoto University
Kartik Sau
National Institute of Advanced Industrial Science and Technology (AIST)
Tohoku University
Tamio Ikeshoji
Tohoku University
Zhen Dong Huang
Nanjing University of Posts and Telecommunications
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
Kyoto University
Toshiyuki Matsunaga
Kyoto University
Kotaro Fujii
Tokyo Institute of Technology
Masatomo Yashima
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
Kyoto University
Rika Hagiwara
Kyoto University
Tomohiro Saito
Sumika Chemical Analysis Service (SCAS), Ltd.
Nature Communications
2041-1723 (ISSN) 20411723 (eISSN)
Vol. 12 1 4660Subject Categories
Inorganic Chemistry
Materials Chemistry
Other Chemistry Topics
Areas of Advance
Materials Science
DOI
10.1038/s41467-021-24694-5
PubMed
34341351