文献类型：期刊文献

英文题名：Zincophile channel adjustment realizes dendrite-free zinc anode for low-temperature zinc-ion capacitors

作者：Sun, Ming[1];Zhang, Zekai[2,3];Chen, Jin[1];Zhang, Yifan[1];Wang, Ruoyu[1];Mu, Hongchun[2,3];Lian, Cheng[2,3];Wang, Wenqiang[1];Wang, Gengchao[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Frontiers Sci Ctr Materiobiol & Dynam Chem, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：474

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20233714714999);WOS:【SCI-EXPANDED(收录号:WOS:001075886200001)】；

基金：We greatly appreciate the financial supports of National Natural Science Foundation of China (21875065, 22109045) and China Post-doctoral Science Foundation funded project (2021M701191) .

语种：英文

外文关键词：Cu-Sn nanowires; Zinc anode; Dendrite-free; Freeze-resistant electrolyte; Flexible zinc -ion capacitors

摘要：The aqueous zinc-ion hybrid capacitors (ZIHCs) have promising applications for large-scale energy storage due to high safety and low cost. However, the ZIHCs suffer from the poor cycling performance and the inability of the device to operate at freezing point. Herein, we designed an integrated device architecture consisting of a coppertin nanowires (Cu-Sn NWs) array loaded zinc substrate with 3D pro-zinc channels assembled in-situ with a freezeresistant electrolyte to realize flexible ZIHCs based on a dendrite free zinc anode. The Cu-Sn NWs with extremely low zinc nucleation overpotential induce uniform zinc deposition by homogenizing the electric field, while the resulting 3D nanowire array scaffold with ample internal space buffers the volume changes during the stripping/ plating process. As-fabricated Zn-loaded substrate shows an extremely low voltage polarization of 23 mV and the outstanding ability to stably stripping/plating for 1200 h at 5 mA cm-1. Furthermore, the as-assembled flexible ZIHC is outstanding cycling performance (nearly 85.5% capacitance retention after 10,000 cycles at -20 degrees C) by in-situ polymerization of anti-freeze acrylamide-based composite hydrogel electrolyte on the zinc-loaded substrate. The strategy helps to stimulate the application of high-performance dendrite-free flexible energy-storage devices in cold environment.