题目：

Facile Zn²⁺ Desolvation Enabled by Local Coordination Engineering for Long‐Cycling Aqueous Zinc-Ion Batteries

作者：

Liyan Ding¹, Lei Wang¹, Jiechang Gao¹, Tianran Yan¹, Hongtai Li¹, Jing Mao², Fei Song³, Stanislav Fedotov⁴, Luo-Yueh Chang⁵,Ning Li^6,7, Yuefeng Su^6,7*, Tiefeng Liu⁸*, Liang Zhang^1,9*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China

²School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China

³Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201000, China

⁴Skoltech Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, 121205, Moscow, Russian Federation

⁵National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

⁶Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

⁷Beijing Institute of Technology Chongqing Innovation Center, Chongqing 401120, China

⁸College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China

⁹Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou 215123, China

摘要：

Aqueous zinc-ion batteries (AZIBs) have aroused continuously increasing attention for grid-scale energy storage applications. However, the progress of AZIBs is largely plagued by their sluggish reaction kinetics and poor structural reversibility, which are closely related to the desolvation process of hydrated Zn²⁺. Herein, a strategy of local coordination engineering is proposed to modulate both surface and bulk structure of a conventional α-MnO₂ cathode to overcome these issues. Theoretical simulations and experimental characterizations reveal that the surface F coordinations effectively adjust the absorption strength towards H₂O and Zn, which facilitates the desolvation of hydrated Zn²⁺ and thus improves the interfacial ion diffusion rate and reaction kinetics. Meanwhile, the structural integrity is largely enhanced with suppressed irreversible phase evolution over cycling benefiting from the presence of robust Mn-F bonds in the bulk lattice. As a consequence, the achieved cathode exhibits almost no capacity degradation after 400 cycles at a low current density of 0.5 A g^-1 and a long-term durability over 3500 cycles at a high current density of 5 A g^-1. The proposed modulation strategy provides new opportunities for designing long-cycling and high-energy cathodes for AZIBs and beyond. 

影响因子：

19.924

分区情况：

一区

链接：

https://onlinelibrary.wiley.com/doi/10.1002/adfm.202301648