Facile synthesis of binder-free CuSe as a long-cycling anode for sodium batteries: Self-healing metal selenide anode for sodium batteries
- Authors
- Kim, Huihun; Kim, Tae-hong; Cho, Gyu-Bong; Ryu, Ho-Suk; Ahn, Jou-Hyeon; Cho, Kwon-Koo; Ahn, Hyo-Jun
- Issue Date
- Jan-2024
- Publisher
- Elsevier Ltd
- Keywords
- Copper selenide (CuSe) anode; Degradation; High rate; Long cycle life; Pulverisation; Self-healing; Sodium ion battery
- Citation
- Journal of Energy Storage, v.76
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Energy Storage
- Volume
- 76
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/68606
- DOI
- 10.1016/j.est.2023.109848
- ISSN
- 2352-152X
2352-1538
- Abstract
- Owing to their high capacity and electrical conductivity, transition metal selenides have attracted attention as anodes for sodium batteries. In this study, CuSe was synthesised using a simple and scalable process that involved heating Se powder on a Cu current collector at 140 °C for 5 h. Furthermore, CuSe was used as an anode without a binder or conducting agent, exhibiting a stable capacity during long cycles. The initial capacity of the CuSe electrode was 289 mAh g−1 at 15 A g−1, which reduced to 89.2 % of the initial value after 10,000 cycles. During cycling, the CuSe particles were cleaved and pulverised into nanoparticles, which subsequently agglomerated to form a porous structure without capacity loss. This phenomenon is known as self-healing. Because pulverised CuSe exhibits optimal cycling properties, pulverisation does not cause poor cycling and can be overcome through self-healing. This study is the first to investigate the self-healing properties of metal selenides. Additionally, the Na3V2(PO4)3/CuSe full cell exhibited a good cyclability of 151 mAh g−1 after 2000 cycles. The superior properties of CuSe in conjunction with an ether-type electrolyte provide deep insights for the development of long-lasting cycling batteries. © 2023
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.gnu.ac.kr/handle/sw.gnu/68606)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.