Journal
ENERGY STORAGE MATERIALS
Volume 50, Issue -, Pages 580-588Publisher
ELSEVIER
DOI: 10.1016/j.ensm.2022.06.001
Keywords
Aqueous zinc ion batteries; Interlayers; Weighing papers; Ion redistributors; Dendrite free
Funding
- Talents Program of Sichuan University of Science and Engineering [2019RC01]
- National Key Research and Development Program of China [2018YFB0104200]
- National Nat-ural Science Foundation of China [21878192, 51502180, 51804156]
- 1000 Talents Program of Sichuan Province
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This study proposes a solution to the issues of zinc dendrites and side reactions in aqueous zinc ion batteries by constructing a Zn2+ redistributor using weighing paper as an interlayer. The weighing paper exhibits a high water-locking ability to terminate side reactions and contains functional -O groups that can adsorb and facilitate the desolvation process of Zn2+. The electrode covered with weighing paper shows a highly reversible plating/stripping behavior with a long lifespan, even with lean electrolyte and cost-effective separators. This cost-effective and high-performing interlayer engineering holds great potential for practical applications of aqueous zinc ion batteries.
When we talk about the anode of aqueous zinc ion batteries (AZIBs), inevitably, it comes up with zinc dendrites, side reactions, and the resulting poor electrochemical performances. Herein, a Zn2+ redistributor is constructed by inserting commercial weighing paper (WP) between the zinc anode and separator as an interlayer to eliminate dendrites. The large water-locking ability of WP assists in terminating side reactions, while plenteous functional -O groups contribute to adsorb Zn2+ and simultaneously facilitate their desolvation process. Consequently, the WP-covered electrode exhibits highly reversible plating/stripping behavior with longevity life over 2400 h and 800 h at the current densities of 1 and 9 mA cm-2, respectively. Intriguingly, even in the case of lean electrolyte (30 mu L) and cost-effective separators (commercial filter papers), the battery with WP sustains over 2000 h. This cost-effective and high-performing interlayer engineering is considered to shed light on the practical application of AZIBs.
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