TY - JOUR
T1 - Toward Simultaneous Dense Zinc Deposition and Broken Side-Reaction Loops in the Zn//V2O5 System
AU - Wang, Huirong
AU - Zhou, Anbin
AU - Hu, Zhengqiang
AU - Hu, Xin
AU - Zhang, Fengling
AU - Song, Zhihang
AU - Huang, Yongxin
AU - Cui, Yanhua
AU - Cui, Yixiu
AU - Li, Li
AU - Wu, Feng
AU - Chen, Renjie
N1 - Publisher Copyright:
© 2024 Wiley-VCH GmbH.
PY - 2024/3/11
Y1 - 2024/3/11
N2 - The Zn//V2O5 system not only faces the incontrollable growth of zinc (Zn) dendrites, but also withstands the cross-talk effect of by-products produced from the cathode side to the Zn anode, inducing interelectrode talk and aggravating battery failure. To tackle these issues, we construct a rapid Zn2+-conducting hydrogel electrolyte (R-ZSO) to achieve Zn deposition modulation and side reaction inhibition in Zn//V2O5 full cells. The polymer matrix and BN exhibit a robust anchoring effect on SO42−, accelerating Zn2+ migration and enabling dense Zn deposition behavior. Therefore, the Zn//Zn symmetric cells based on the R-ZSO electrolyte can operate stably for more than 1500 h, which is six times higher than that of cells employing the blank electrolyte. More importantly, the R-ZSO hydrogel electrolyte effectively decouples the cross-talk effects, thus breaking the infinite loop of side reactions. As a result, the Zn//V2O5 cells using this modified hydrogel electrolyte demonstrate stable operation over 1,000 cycles, with a capacity loss rate of only 0.028 % per cycle. Our study provides a promising gel chemistry, which offers a valuable guide for the construction of high-performance and multifunctional aqueous Zn-ion batteries.
AB - The Zn//V2O5 system not only faces the incontrollable growth of zinc (Zn) dendrites, but also withstands the cross-talk effect of by-products produced from the cathode side to the Zn anode, inducing interelectrode talk and aggravating battery failure. To tackle these issues, we construct a rapid Zn2+-conducting hydrogel electrolyte (R-ZSO) to achieve Zn deposition modulation and side reaction inhibition in Zn//V2O5 full cells. The polymer matrix and BN exhibit a robust anchoring effect on SO42−, accelerating Zn2+ migration and enabling dense Zn deposition behavior. Therefore, the Zn//Zn symmetric cells based on the R-ZSO electrolyte can operate stably for more than 1500 h, which is six times higher than that of cells employing the blank electrolyte. More importantly, the R-ZSO hydrogel electrolyte effectively decouples the cross-talk effects, thus breaking the infinite loop of side reactions. As a result, the Zn//V2O5 cells using this modified hydrogel electrolyte demonstrate stable operation over 1,000 cycles, with a capacity loss rate of only 0.028 % per cycle. Our study provides a promising gel chemistry, which offers a valuable guide for the construction of high-performance and multifunctional aqueous Zn-ion batteries.
KW - Hydrogel Electrolyte
KW - Interelectrode Talk
KW - Rapid Zinc-Ion Conductive
KW - Zn Deposition Regulation
KW - Zn//VO Cells
UR - http://www.scopus.com/inward/record.url?scp=85182824144&partnerID=8YFLogxK
U2 - 10.1002/anie.202318928
DO - 10.1002/anie.202318928
M3 - Article
C2 - 38189767
AN - SCOPUS:85182824144
SN - 1433-7851
VL - 63
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 11
M1 - e202318928
ER -