Structure-Controlled Carbon Hosts for Dendrite-Free Aqueous Zinc Batteries
- Title
- Structure-Controlled Carbon Hosts for Dendrite-Free Aqueous Zinc Batteries
- Author
- 김병현
- Keywords
- defective sp 2-carbon; mesoporous carbon host; zinc metal anodes; zinc-ion batteries
- Issue Date
- 2023-09
- Publisher
- Wiley - V C H Verlag GmbbH & Co.
- Citation
- Small, v. 19, NO. 36, article no. 2302334, Page. 1.0-8.0
- Abstract
- The surging demand for environmental-friendly and safe electrochemical energy storage systems has driven the development of aqueous zinc (Zn)-ion batteries (ZIBs). However, metallic Zn anodes suffer from severe dendrite growth and large volume change, resulting in a limited lifetime for aqueous ZIB applications. Here, it is shown that 3D mesoporous carbon (MC) with controlled carbon and defect configurations can function as a highly reversible and dendrite-free Zn host, enabling the stable operation of aqueous ZIBs. The MC host has a structure-controlled architecture that contains optimal sp(2)-carbon and defect sites, which results in an improved initial nucleation energy barrier and promotes uniform Zn deposition. As a consequence, the MC host shows outstanding Zn plating/stripping performance over 1000 cycles at 2 mA cm(-2) and over 250 cycles at 6 mA cm(-2) in asymmetric cells. Density functional theory calculations further reveal the role of the defective sp(2)-carbon surface in Zn adsorption energy. Moreover, a full cell based on Zn@MC900 anode and V2O5 cathode exhibits remarkable rate performance and cycling stability over 3500 cycles. These results establish a structure-mechanism-performance relationship of the carbon host as a highly reversible Zn anode for the reliable operation of ZIBs.
- URI
- https://onlinelibrary.wiley.com/doi/full/10.1002/smll.202302334https://repository.hanyang.ac.kr/handle/20.500.11754/187772
- ISSN
- 1613-6810;1613-6829
- DOI
- 10.1002/smll.202302334
- Appears in Collections:
- COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > CHEMICAL AND MOLECULAR ENGINEERING(화학분자공학과) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML