GaSb nanocomposite: New high-performance anode material for Na- and K-ion batteries
- Authors
- Hwang, In-Su; Lee, Young-Han; Yoon, Jeong-Myeong; Hwa, Yoon; Park, Cheol-Min
- Issue Date
- Aug-2022
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Sodium -ion batteries; Potassium -ion batteries; Electrochemical phase transition mechanism; Gallium -based anodes
- Citation
- COMPOSITES PART B-ENGINEERING, v.243
- Journal Title
- COMPOSITES PART B-ENGINEERING
- Volume
- 243
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26183
- DOI
- 10.1016/j.compositesb.2022.110142
- ISSN
- 1359-8368
1879-1069
- Abstract
- As representative next-generation secondary battery systems, sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) are key candidates to achieve zero-carbon emission. Herein, we introduce a versatile GaSb nanocomposite anode for SIBs and PIBs. The performance and phase transition mechanism for GaSb, pure Ga, and Sb with Na and K ions are evaluated. Furthermore, three-step nanoconfinement and stabilization of GaSb crystallites are achieved in the GaSb nanocomposite. The nanostructure of the GaSb nanocomposite, consisting of approximately 2-4 nm GaSb crystallites uniformly distributed in an amorphous carbon matrix, promotes the electrochemical reaction kinetics with Na and K ions, and the chemical and mechanical stabilities of the GaSb nanocomposite electrodes. The GaSb nanocomposite anode possesses highly reversible initial volumetric and gravimetric capacities and superior high-rate capabilities. In this study, we offer new insights into the phase transition mechanisms of GaSb with Na and K ions and promising performance GaSb nanocomposite anodes for SIBs and PIBs.
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