Volume 8, Issue 23 p. 4441-4444
Communication

All-Solid-State Chloride-Ion Battery with Inorganic Solid Electrolyte

Dr. Ryo Sakamoto

Dr. Ryo Sakamoto

Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, 816-8580 Japan

Search for more papers by this author
Nobuaki Shirai

Nobuaki Shirai

Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, 816-8580 Japan

Search for more papers by this author
Dr. Atsushi Inoishi

Corresponding Author

Dr. Atsushi Inoishi

Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, 816-8580 Japan

Search for more papers by this author
Prof. Shigeto Okada

Prof. Shigeto Okada

Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, 816-8580 Japan

Search for more papers by this author
First published: 01 September 2021
Citations: 7

Graphical Abstract

Chloride-ion batteries generally exhibit poor cyclability because of the high solubility of chloride, as an active material, in polar solvents. An all-solid-state chloride-ion battery containing a PbCl2-based solid electrolyte and exhibiting good cycle performance is reported.

Abstract

Chloride-ion batteries have some attractive properties such as high energy density and low cost. However, they have poor cycle performance because chloride as an active material tends to dissolve into a polar solvent. Herein, an all-solid-state chloride-ion battery is demonstrated with KCl-doped PbCl2 as a solid electrolyte to suppress the dissolution of chloride. The all-solid-state cell with BiCl3 as the cathode had an initial discharge capacity of 187 mAh g−1, which corresponds to 73 % of the theoretical capacity of BiCl3. Moreover, it exhibited better cyclability compared to the previously reported non-aqueous cell with BiCl3 cathode. During the charge-discharge process, XRD and XPS analysis confirmed the unique behavior of conversion reaction by Cl anion, where Bi is produced by discharging and BiCl3 returns by charging.