%0 Journal Article
%A Thieu, Nhat Anh
%A Li, Wei
%A Chen, Xiujuan
%A Li, Qingyuan
%A Wang, Qingsong
%A Velayutham, Murugesan
%A Grady, Zane M.
%A Li, Xuemei
%A Li, Wenyuan
%A Khramtsov, Valery V.
%A Reed, David M.
%A Li, Xiaoling
%A Liu, Xingbo
%T Synergistically Stabilizing Zinc Anodes by Molybdenum Dioxide Coating and Tween 80 Electrolyte Additive for High-Performance Aqueous Zinc-Ion Batteries
%J ACS applied materials & interfaces
%V 15
%N 48
%@ 1944-8244
%C Washington, DC
%I Soc.
%M PUBDB-2023-07129
%P 55570 – 55586
%D 2023
%X Recently, aqueous zinc-ion batteries (ZIBs) have become increasingly attractive as grid-scale energy storage solutions due to their safety, low cost, and environmental friendliness. However, severe dendrite growth, self-corrosion, hydrogen evolution, and irreversible side reactions occurring at Zn anodes often cause poor cyclability of ZIBs. This work develops a synergistic strategy to stabilize the Zn anode by introducing a molybdenum dioxide coating layer on Zn (MoO<sub>2</sub>@Zn) and Tween 80 as an electrolyte additive. Due to the redox capability and high electrical conductivity of MoO<sub>2</sub>, the coating layer can not only homogenize the surface electric field but also accommodate the Zn<sup>2+</sup> concentration field in the vicinity of the Zn anode, thereby regulating Zn<sup>2+</sup> ion distribution and inhibiting side reactions. MoO<sub>2</sub> coating can also significantly enhance surface hydrophilicity to improve the wetting of electrolyte on the Zn electrode. Meanwhile, Tween 80, a surfactant additive, acts as a corrosion inhibitor, preventing Zn corrosion and regulating Zn<sup>2+</sup> ion migration. Their combination can synergistically work to reduce the desolvation energy of hydrated Zn ions and stabilize the Zn anodes. Therefore, the symmetric cells of MoO<sub>2</sub>@Zn∥MoO2@Zn with optimal 1 mM Tween 80 additive in 1 M ZnSO<sub>4</sub> achieve exceptional cyclability over 6000 h at 1 mA cm<sup>−2</sup> and stability (>700 h) even at a high current density (5 mA cm<sup>−2</sup>). When coupling with the VO<sub>2</sub> cathode, the full cell of MoO<sub>2</sub>@Zn∥VO<sub>2</sub> shows a higher capacity retention (82.4
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 38058105
%U <Go to ISI:>//WOS:001123064600001
%R 10.1021/acsami.3c08474
%U https://bib-pubdb1.desy.de/record/599051