Regulating the solvation sheath of zinc ions by supramolecular coordination chemistry toward ultrastable zinc anodes
Guoqun Zhang,
Yuan Chen,
Lulu Fu,
Lifeng Zheng,
Kun Fan,
Chenyang Zhang,
Jincheng Zou,
Huichao Dai,
Linnan Guan,
Yueyue Cao,
Minglei Mao,
Jing Ma,
Chengliang Wang
Affiliations
Guoqun Zhang
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Yuan Chen
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Lulu Fu
Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering Nanjing University Nanjing China
Lifeng Zheng
Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering Nanjing University Nanjing China
Kun Fan
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Chenyang Zhang
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Jincheng Zou
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Huichao Dai
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Linnan Guan
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Yueyue Cao
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Minglei Mao
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Jing Ma
Key Laboratory of Mesoscopic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering Nanjing University Nanjing China
Chengliang Wang
School of Integrated Circuits, School of Optical and Electronic Information, Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology Wuhan China
Abstract Aqueous zinc‐ion batteries (ZIBs) have attracted extensive interest for the next‐generation batteries, which, however, are facing great challenges due to the poor reversibility of zinc (Zn) anodes and side reactions of water decomposition. Herein, we demonstrated a strategy that the solvation sheath of Zn ions could be facilely regulated by supramolecular coordination chemistry by adding small amounts of cyclodextrins (CDs) and, hence, inhibited the side reactions and side products, widened the electrochemical window, facilitated the homogenous deposition of Zn ions, refined the Zn grains, and enhanced the stability of Zn anodes. Importantly, we demonstrated that compared with α‐ and β‐CD, the γ‐CD showed the best regulation effect of the solvation sheath of Zn ions either at the same molar ratio or at the same mass concentration, which could be ascribed to their difference in supramolecular coordination chemistry and the strongest interaction of γ‐CD with Zn ions. As a result, with γ‐CD, the Zn//Zn symmetric cells showed ultrahigh stability with a cycling lifespan of over 2400 h at a current density of 1 mA/cm2. These results highlight the regulation of solvation sheath by supramolecular coordination chemistry for highly stable Zn anodes and pave a new way to realize high‐performance ZIBs.
