Highly stable Zn anodes realized by 3D zincophilic and hydrophobic interphase buffer layer  

作　　者：Yunfei Shen Pengjie Fu Jianjie Liu Kaisheng Sun Huanzhang Wen Ping Liu Heng Lv Tiantian Gu Xiaodong Yang Long Chen 

机构地区：[1]School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering,Shihezi University,Shihezi 832003,China [2]Key Laboratory of Ecophysics and Department of Physics,College of Science,Shihezi University,Shihezi 832003,China

出　　处：《Nano Research Energy》2024年第3期28-38,共11页纳米能源研究（英文）

基　　金：supported by the National Natural Science Foundation of China(Nos.52302105 and 51962032);the program for Strong Youth Technology Leading Talents(2023CB008-11);the Youth Innovative Top Talents Fund,Shihezi University(CXBJ202203);Youth Science and Technology Innovation Leading Talent Fund,Shihezi(2023RC02);Youth Innovation Promotion Association CAS(2021433).

摘　　要：Aqueous zinc-ion batteries(AZIBs)are promising contenders for energy storage systems owing to their low cost and high safety.However,their practical application is hindered by uncontrolled Zn dendrites and other side reactions.Here,the three-dimensional(3D)TiO2/Cu2Se/C heterostructure layer derived from MXene/Cu-MOF is constructed on the Zn anode to control the deposition/dissolution behavior,which has numerous active sites,better electrical conductivity and excellent structural stability.Based on DFT calculation,the built-in electric field(BIEF)formed of TiO2/Cu2Se/C can enhance charge transfer and ionic diffusion to inhibit the dendrites.Furthermore,hydrophobic coating has the ability to impede the corrosion and hydrogen evolution reaction(HER)of zinc anode.Thus,TiO2/Cu2Se/C@Zn enable the stable and reversible Zn plating/stripping process with the outstanding lifetime of 1100 h at 2 mA·cm^(-2) and even 650 h at 10 mA·cm^(-2).The batteries constructed with commercial MnO2 cathodes demonstrate the remarkable capacity(248.7 mAh·g−1 at 0.1 A·g−1)and impressive cycle stability(with 71.3%capacity retention after 300 cycles).As well as extending the life of AZIBs,this study is also motivating for other metal anode based secondary batteries.

关 键 词：zinc anode HETEROSTRUCTURE built-in electric field zincophilic HYDROPHOBIC 

分 类 号：TM910.4[电气工程—电力电子与电力传动]