Metal sulfoselenide solid solution embedded in porous hollow carbon nanospheres as effective anode material for potassium-ion batteries with long cycle life and enhanced rate performance
- Authors
- Park, Gi Dae; Park, Jin-Sung; Kim, Jin Koo; Kang, Yun Chan
- Issue Date
- 15-1월-2022
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Metal sulfoselenide; Heterostructure; Carbon nanocomposite; Conversion mechanism; Potassium-ion batteries
- Citation
- CHEMICAL ENGINEERING JOURNAL, v.428
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMICAL ENGINEERING JOURNAL
- Volume
- 428
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/135257
- DOI
- 10.1016/j.cej.2021.131051
- ISSN
- 1385-8947
- Abstract
- Recently, potassium-ion batteries (KIBs) have been investigated as promising alternative to lithium-ion batteries, and significant advances in terms of new compositions and nanostructures are being made. In this regard, the strategy of introducing hetero-anions into metal compounds has been considered as an innovative method. After the initial electrochemical reaction, hetero-anion metal compounds are divided into individual metal compounds to form heterointerfaces, thus enhancing the electrochemical kinetics. Herein, a new strategy for the synthesis of metal sulfoselenide solid solution embedded in the porous shells of hollow carbon nanospheres is introduced; here, porous hollow carbon nanospheres are utilized as a co-infiltrating matrix to create electrode material with robust stability and high conductivity. The conversion reaction mechanism of metal sulfoselenide with potassium ions was investigated through systematic structural and electrochemical analyses, where metal sulfide/metal selenide hetero-interface was formed after the initial cycle. As anode for KIBs, CoSSe-C exhibited impressive electrochemical properties including particularly long cycle life (286 mA h g-1 for 3000 cycles at 1.5 A g-1) and excellent rate capability (185 mA h g-1 at 5.0 A g-1).
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholar.korea.ac.kr/handle/2021.sw.korea/135257)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.