Details

Autor(en) / Beteiligte

• Yang, Xianzhong
• Li, Weiping
• Chen, Ziyan
• Tian, Meng
• Peng, Jun
• Luo, Jinrong
• Su, Yiwen
• Zou, Yuhan
• Weng, Gao
• Shao, Yuanlong
• Dou, Shixue
• Sun, Jingyu

Titel

Synchronous Dual Electrolyte Additive Sustains Zn Metal Anode with 5600 h Lifespan

Ist Teil von

• Angewandte Chemie International Edition, 2023-03, Vol.62 (10), p.e202218454-n/a

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2023

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Despite conspicuous merits of Zn metal anodes, the commercialization is still handicapped by rampant dendrite formation and notorious side reaction. Manipulating the nucleation mode and deposition orientation of Zn is a key to rendering stabilized Zn anodes. Here, a dual electrolyte additive strategy is put forward via the direct cooperation of xylitol (XY) and graphene oxide (GO) species into typical zinc sulfate electrolyte. As verified by molecular dynamics simulations, the incorporated XY molecules could regulate the solvation structure of Zn2+, thus inhibiting hydrogen evolution and side reactions. The self‐assembled GO layer is in favor of facilitating the desolvation process to accelerate reaction kinetics. Progressive nucleation and orientational deposition can be realized under the synergistic modulation, enabling a dense and uniform Zn deposition. Consequently, symmetric cell based on dual additives harvests a highly reversible cycling of 5600 h at 1.0 mA cm−2/1.0 mAh cm−2. Synchronous dual electrolyte additive sustains reversible Zn metal anode: A dual electrolyte additive strategy is developed via the direct addition of xylitol and graphene oxide species into common zinc sulfate electrolyte. Progressive nucleation and orientational deposition can be readily obtained under the synergistic additive regulation, thus enabling a dense and uniform deposition with a lifespan of 5600 h at 1.0 mA cm−2/1.0 mAh cm−2.