Zincophilic and hydrophobic bifunctional PFA-COOH-CNT artificial SEI film for highly stable Zn anode  

作　　者：Lingyao Kuang Bohui Xu Long Zhang Zheshuai Lin Xingxing Gu Xiaolei Ren Yanglong Hou 

机构地区：[1]Chongqing Key Laboratory of Catalysis and New Environmental Materials,College of Environment and Resources,Chongqing 400067,China [2]Functional Crystals Lab,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China [3]School of Materials,Shenzhen Campus of Sun Yat-Sen University,Shenzhen 518107,China [4]Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKL-MMD),School of Materials Science and Engineering,Peking University,Beijing 100871,China

出　　处：《Nano Research》2025年第2期346-357,共12页纳米研究(英文版)

基　　金：This study was funded by the National Natural Science Foundation of China(Nos.51902036,22222902,2263203,and 52111530236);the National Key R&D Program of China(No.2022YFA1203902);the Key Science and Technology Research Program of Chongqing Education Commission(No.KJZD-K202200807);the Natural Science Foundation of Chongqing Science&Technology Commission(No.CSTB2022NSCQ-MSX0828);Chongqing Bayu Scholars Support Program(No.YS2022050);Research Project of Innovative Talent Training Engineering Program of Chongqing Primary and Secondary School(No.CY240806).

摘　　要：Aqueous zinc-ion batteries(AZIBs)are regarded as one of the most promising rivals in the upcoming high-energy secondary battery market because of their safety and non-toxicity.However,the zinc dendrites growth and hydrogen evolution corrosion of the Zn anode have seriously restricted the application of AZIBs.Herein,to overcome these constraints,a three-dimensional(3D)porous PFA-COOH-CNT artificial solid electrolyte interface(SEl)film with high hydrophobic and zincophilic properties was constructed on Zn anode surface by in-situ polymerization of furfuryl alcohol(FA)and carboxyl carbon nanotubes(COOH-CNT).A series of in-situ,ex-situ characterizations as well as the density functional theory(DFT)calculations reveal that the formed PFA-COOH-CNT SEI film with an abundant oxygen-containing group can provide abundant zincophilic sites and induce homogeneous deposition of Zn^(2+),as well as the hydrophobic alkyl and carbon skeleton in PFA-COOH-CNT SEI film can isolate the direct contact of H_(2)O with Zn anode,and inhibit the occurrence of hydrogen evolution reaction(HER).Accordingly,the Zn anode with PFA-COOH-CNT layer can attain an ultra-long cycle life of 2200 h at 1 mA·cm^(-2),1 mAh·cm^(-2).Simultaneously,the assembled PFA-COOH-CNT@ZnllV2Os full cell can also achieve a high reversible capacity of up to 150.2 mAh•g^(-1) at 1 A·g^(-1) after 400 cycles,with a high average coulombic efficiency(CE)of 98.8%.The designed PFA-COOH-CNT artificial SEI film provides a broad prospect for highly stable zinc anode,and can also be extended to other energy storage systems based on metal anodes.

关 键 词：Zn anode PFA-COOH-CNT solid electrolyte interface(SEI)film zincophilic HYDROPHOBIC 

分 类 号：TM911[电气工程—电力电子与电力传动]