“Zincophilic‑Hydrophobic”PAN/PMMA Nanofiber Membrane Toward High‑Rate Dendrite‑Free Zn Anode  

作　　者：Yanjie Wang Ning Li Huiyan Liu Juan Shi Yuequn Li Xukai Wu Zhuo Wang Chao Huang Kongyao Chen Dianbo Zhang Tianyu Wu Ping Li Cuixia Liu Liwei Mi 

机构地区：[1]Henan Key Laboratory of Functional Salt Materials,Center for Advanced Materials Research,Zhongyuan University of Technology,450007 Zhengzhou,People’s Republic of China [2]School of Energy and Environment,Zhongyuan University of Technology,45

出　　处：《Advanced Fiber Materials》2023年第6期2002-2015,共14页先进纤维材料（英文）

基　　金：the Natural Science Foundation of China(No.21701202);Henan Province(No.212102210182&222102240038&232102231059&Young Backbone Teacher Funding of Henan province);Natural Science Foundation of Zhongyuan University of Technology(No.K2023MS007&K2023QN006).

摘　　要：Uncontrollable Zn dendrites and side reactions seriously downgrade the cycling stability of the Zn anode,and restrict the commercialization of aqueous zinc ion batteries.Here,PAN-based(PAN,PAN/PMMA)nanofiber membranes with uniform“zincophilic-hydrophobic”sites have been in-situ electrospun on Zn to effectively prevent harmful side reactions and control Zn plating/stripping behavior.The abundant highly-negative functional groups(C≡N and C=O)of PAN/PMMA have strong coordination interactions with Zn2+,which can accelerate Zn2+desolvation and increase the Zn2+migration number.Furthermore,the even distribution of zincophilic sites can help create a uniform Zn deposition environment and enable horizontal Zn deposition.Simultaneously,the inherent“hydrophobicity”of the nonpolar carbon skeleton in PAN/PMMA can prevent Zn corrosion and hydrogen evolution reaction(HER)side reactions,thus improving the cycling stability of the Zn anode.As a result,PAN/PMMA@Zn symmetric cells demonstrated remarkable rate performance and long cycling stability,sustaining efficient operation for over 2000 cycles at 10 mA cm^(−2)with a low polarization voltage below 65 mV.This Zn anode modification strategy by in-situ constructed PAN-based nanofiber membrane has the advantages of simple-preparation,one-step membrane construction,binder-free,uniform distribution of functionalized units,which not only provides a specific scheme for developing advanced Zn anode but also lays a certain research foundation for developing“separator-anode”integrated Zn-based batteries.

关 键 词：Zincophilic-hydrophobic Electrospun nanofiber membrane PAN/PMMA Dendrite-free Zn anode High-rate performance 

分 类 号：TB383[一般工业技术—材料科学与工程]