Affiliation:
1. College of Materials and Chemical Engineering China Three Gorges University Yichang Hubei 443002 China
2. Hubei Provincial Collaborative Innovation Center for New Energy Microgrid College of Electrical Engineering & New Energy China Three Gorges University Yichang Hubei 443002 China
3. School of Materials Science and Engineering Shenyang University of Technology Shenyang 110870 China
4. Metallurgy and Materials Science Research Institute Chulalongkorn University Bangkok 10330 Thailand
5. College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 China
Abstract
AbstractThe long‐term reversible plating/stripping of Zn metal anode is a critical aspect within aqueous zinc‐ion batteries (ZIBs). However, it is limited by uncontrolled electrodeposition and side reactions occurring at the anode/electrolyte interface. Guided by the metal‐coordination chemistry, a novel additive, sodium diphenylamine sulfonate (DASS), is added into ZnSO4 electrolyte to guide stably invertible zinc deposition. Theoretical calculations and experimental results reveal that the DASS can adsorbed on the Zn anode surface due to the strong double coordination effect between N, S sites and Zn (Zn─N, Zn─S), and this adsorbed DASS layer can not only prevent the intimate contact between H2O and anode to inhibit interfacial side reactions, but also guide the 3D Zn2+ion diffusion and uniform electrodeposition to inhibit zinc dendrites. Consequently, the DASS additive enables an ultra‐long stable cycling up to 2400 h at 1 mA cm−2 (1 mAh cm−2), even at an ultra‐high current density of 20 mA cm−2, a stable cycling of 250 h is demonstrated, highlighting the reliable coordination effect at the anode/electrolyte interface. This study offers a new perspective on the interfacial double‐coordination effect for achieving highly reversible Zn metal anodes in aqueous rechargeable zinc‐ion batteries.
Funder
National Basic Research Program of China
National Natural Science Foundation of China
Subject
General Materials Science,Renewable Energy, Sustainability and the Environment