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Highly reversible zinc metal anode enabled by strong Brønsted acid and hydrophobic interfacial chemistry

Engineering and Technology

Highly reversible zinc metal anode enabled by strong Brønsted acid and hydrophobic interfacial chemistry

Q. Nian, X. Luo, et al.

Discover a groundbreaking approach to enhancing zinc anode reversibility in batteries! Researchers, including Qingshun Nian and Xuan Luo, unveil how bis(trifluoromethanesulfonyl)imide transforms battery interfacial chemistry, achieving impressive performance metrics like a Coulombic efficiency of 99.7%. This work could redefine the future of energy storage.

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Playback language: English
Abstract
Uncontrollable zinc (Zn) plating and hydrogen evolution greatly undermine Zn anode reversibility. This paper presents a strategy using bis(trifluoromethanesulfonyl)imide (HTFSI) as an electrolyte additive to reformulate battery interfacial chemistry, suppress corrosion, and promote uniform Zn deposition. The hydrophobic TFSI anions create a water-deficient microenvironment, inhibiting Zn corrosion and inducing a ZnS-rich interphase. High Zn plating/stripping Coulombic efficiency (up to 99.7%) and excellent capacity retention (76.8% after 2000 cycles in Zn||ZnV₆O₁₃ full cells) are achieved.
Publisher
Nature Communications
Published On
May 21, 2024
Authors
Qingshun Nian, Xuan Luo, Digen Ruan, Yecheng Li, Bing-Qing Xiong, Zhuangzhuang Cui, Zihong Wang, Qi Dong, Jiajia Fan, Jinyu Jiang, Jun Ma, Zhihao Ma, Dazhuang Wang, Xiaodi Ren
Tags
zinc plating
battery technology
electrolyte additive
Coulombic efficiency
Zn anode
energy storage
corrosion suppression

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