@article{Li2022, 
author = {Jiaxu Li and Junfeng Ren and Caixia Li and Pengxian Li and Tingting Wu and Shiwei Liu and Lei Wang},
title = {High-adhesion anionic copolymer as solid-state electrolyte for dendrite-free Zn-ion battery},
year = {2022},
journal = {Nano Research},
volume = {15},
number = {8},
pages = {7190-7198},
keywords = {copolymer, adhesion, ionic conductivity, dendrite-free, interface kinetics},
url = {https://www.sciopen.com/article/10.1007/s12274-022-4370-y},
doi = {10.1007/s12274-022-4370-y},
abstract = {To conquer severe dendrites formation and side reactions of zinc metal anodes, which are serious obstacles for the practical applications of aqueous zinc ion battery (ZIB), herein, we develop a sodium allysulfonate (SAS) and acrylamide (AM) copolymer by radical polymerization process (crosslinking of C=C) as solid-state electrolyte. The interface kinetics is improved remarkably due to the high adhesion and excellent ion transferability of AM-SAS (AS) copolymers. Especially the sulfonic acid group in the hydrogel electrolyte can enhance the internal ionic conductivity effectively benefiting from its high affinity to Zn2+. Also, polymer chains realize re-regulation to Zn2+ flow in atomic-scale, thus leading to controllable deposition of Zn onto the dendrite-free Zn anodes. Consequently, the AS-1.5 electrolyte achieves ultra-stable Zn deposition/stripping behaviors with the lifespan over 1,000 h via the suppression of side-reactions and paralleled Zn deposition. High performances of Zn/Mn-doped V2O5 (MnVO) (over 500 cycles) and Zn/diquinoxalino [2,3-a:2',3'-c] phenazine (HATN) (over 2,500 cycles) full cells demonstrate that the AS hydrogel electrolyte is a common approach for ZIBs under various conditions. This molecular regulation engineering opens a novel route for hydrogel electrolyte fabrication, where sulfonic groups perform as media of Zn2+ transfer. Therefore, high bulk ionic conductivity as well as excellent interface ion diffusion ability is obtained.}
}