Optimizing LiMn1.5M0.5O4 cathode materials for aqueous photo-rechargeable batteries

Kohei Shimokawa; Shogo Matsubara; Tomoya Kawaguchi; Akihiro Okamoto; Tetsu Ichitsubo

doi:10.1039/D3CC01902K

Optimizing LiMn_1.5M_0.5O₄ cathode materials for aqueous photo-rechargeable batteries†

Kohei Shimokawa,

*^ab Shogo Matsubara,

^c Tomoya Kawaguchi,

^b Akihiro Okamoto

^defg and Tetsu Ichitsubo

*^bh

Author affiliations

* Corresponding authors

^a Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan
E-mail: kohei.shimokawa.b7@tohoku.ac.jp

^b Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
E-mail: tichi@imr.tohoku.ac.jp

^c Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Show-ku, Nagoya 466-8555, Japan

^d International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

^e Research Center for Macromolecules and Biomaterials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan

^f Graduate School of Chemical Sciences and Engineering, Hokkaido University, North 13 West 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan

^g Graduate School of Science and Technology, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Japan

^h Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata, Tokai-mura, Naka-gun, Ibaraki 319-1195, Japan

Abstract

Spinel oxides are promising for high-potential cathode materials of photo-rechargeable batteries. However, LiMn_1.5M_0.5O₄ (M = Mn) shows a rapid degradation during charge/discharge under the illumination of UV-visible light. Here, we investigate various spinel-oxide materials by modifying the composition (M = Fe, Co, Ni, Zn) to demonstrate photocharging in a water-in-salt aqueous electrolyte. LiMn_1.5Fe_0.5O₄ exhibited a substantially higher discharge capacity compared to that of LiMn₂O₄ after long-term photocharging owing to enhanced stability under illumination. This work provides fundamental design guidelines of spinel-oxide cathode materials for the development of photo-rechargeable batteries.

Supplementary files

Article information

DOI: https://doi.org/10.1039/D3CC01902K
Article type: Communication
Submitted: 18 Apr 2023
Accepted: 26 May 2023
First published: 06 Jun 2023
This article is Open Access

Download Citation

Chem. Commun., 2023,59, 7947-7950

Permissions

Request permissions

Optimizing LiMn_1.5M_0.5O₄ cathode materials for aqueous photo-rechargeable batteries

K. Shimokawa, S. Matsubara, T. Kawaguchi, A. Okamoto and T. Ichitsubo, Chem. Commun., 2023, 59, 7947 DOI: 10.1039/D3CC01902K

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Chemical Communications