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ARTICLE Cite as Nano-Micro Lett. (2022) 14:82 Received: 10 January 2022 Accepted: 22 February 2022 © The Author(s) 2022 ISSN 2311-6706 e-ISSN 2150-5551 CN 31-2103/TB https://doi.org/10.1007/s40820-022-00825-5 Boosting Zn||I2 Battery’s Performance by Coating a Zeolite‐Based Cation‐Exchange Protecting Layer Wenshuo Shang1, Qiang Li2, Fuyi Jiang1 *, Bingkun Huang1, Jisheng Song1, Shan Yun3, Xuan Liu1, Hideo Kimura1, Jianjun Liu2 *, Litao Kang1 * HIGHLIGHTS • High-performanceZn||I2batterieswereestablishedbycoatingzeoliteprotectinglayers. • TheZn2+-conductivelayersuppressesI3−shuttling,Zncorrosion/dendritegrowth. • TheZeolite-Zn||I2batteriesachievelonglifespan(91.92%capacityretentionafter5600cycles),highcoulombicefficiencies(99.76% in average) and large capacity (203–196 mAh g−1 at 0.2 A g−1) simultaneously. ABSTRACT The intrinsically safe Zn||I2 battery, one of the lead- ing candidates aiming to replace traditional Pb-acid batteries, is still seriously suffering from short shelf and cycling lifespan, due to the uncontrolled I3−-shuttling and dynamic parasitic reactions on Zn anodes. Considering the fact that almost all these detrimental pro- cesses terminate on the surfaces of Zn anodes, modifying Zn anodes’ surface with protecting layers should be one of the most straightfor- ward and thorough approaches to restrain these processes. Herein, a facile zeolite-based cation-exchange protecting layer is designed to comprehensively suppress the unfavored parasitic reactions on the Zn anodes. The negatively-charged cavities in the zeolite lattice provide highly accessible migration channels for Zn2+, while blocking anions and electrolyte from passing through. This low-cost cation-exchange protecting layer can simultaneously suppress self-discharge, anode corrosion/passivation, and Zn dendrite growth, awarding the Zn||I2 batteries with ultra-long cycle life (91.92% capacity retention after 5600 cycles at 2 A g−1), high coulombic efficiencies (99.76% in average) and large capacity (203–196 mAh g−1 at 0.2 A g−1). This work provides a highly affordable approach for the construction of high-performance Zn-I2 aqueous batteries. KEYWORDS Zeolite; Protecting layer; Zn-I2 aqueous battery; Shuttle; Parasitic reactions Wenshuo Shang and Qiang Li contributed equally to this paper and are co-first authors. * Fuyi Jiang, fyjiang@ytu.edu.cn; Jianjun Liu, jliu@mail.sic.ac.cn; Litao Kang, kanglitao@ytu.edu.cn 1 College of Environment and Materials Engineering, Yantai University, Yantai 264005, People’s Republic of China 2 State Key Laboratory of High-Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 3 Shanghai 200050, People’s Republic of China Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai’an 223003, People’s Republic of China Vol.:(0123456789) Zn2+ Zn2+ Zn2+ Zn2+ Dendrites 280 200 120 I3- I- gas H+ H+ Corrosion Zn2+ Zn2+ Zn2+ Zn2+ I3- Zeolite-based coating Zn 20 00 40 2.0Ag-1 0 800 1600 2400 3200 4000 4800 5600 Cycle number 100 60 Zeolite-Zn 13 Capacity (mAh g-1) Coulombic Efficiency (%)PDF Image | Boosting Zn Battery by Coating a Zeolite‐Based Cation‐Exchange
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