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Title: | Molecular Catalysis Enables Fast Polyiodide Conversion for Exceptionally Long-Life Zinc-Iodine Batteries | Authors: | Chen, Zihui Wang, Feifei Ma, Runlin Jiao, Wanying Li, Deyuan Du, Ao Yan, Zhijie Yin, Tianyu Yin, Xunjie Li , Qiang Zhang, Xu Zhou, Zhen YANG, Nianjun Yang, Quan-Hong Yang, Chunpeng |
Issue Date: | 2024 | Publisher: | AMER CHEMICAL SOC | Source: | ACS Energy Letters, , p. 2858 -2866 | Status: | Early view | Abstract: | Zinc-iodine (Zn-I-2) batteries hold great promise for high-performance, low-cost electrochemical energy storage, but their practical application faces thorny challenges associated with polyiodide shuttling and insufficient cycling stability. Herein, we propose molecular catalysis for long-life Zn-I-2 batteries, employing Hemin as an efficient and stable molecular catalyst. The Hemin molecules containing pentacoordinated iron sites significantly adsorb polyiodides, improve the conversion kinetics of iodine species, reduce triiodide concentration, and suppress polyiodide shuttling. Benefiting from molecular catalysis, the Zn-I-2 batteries demonstrate an exceptional cycling life, exceeding 62000 cycles with only 0.00052% decay per cycle while maintaining discharge voltage plateaus. The pivotal function of molecular catalysis in both the adsorption and conversion of polyiodide species shows its significant impact on improving the cycling lifespan of Zn-I-2 batteries toward long-life energy storage. | Notes: | Yang, QH; Yang, CP (corresponding author), Tianjin Univ, Tianjin Key Lab Adv Carbon & Electrochem Energy St, Sch Chem Engn & Technol, Nanoyang Grp, Tianjin 300350, Peoples R China.; Yang, QH; Yang, CP (corresponding author), Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300350, Peoples R China.; Zhang, X (corresponding author), Zhengzhou Univ, Interdisciplinary Res Ctr Sustainable Energy Sci &, Sch Chem Engn, Zhengzhou 450001, Peoples R China.; Yang, QH (corresponding author), Haihe Lab Sustainable Chem Transformat, Tianjin 300192, Peoples R China.; Yang, QH (corresponding author), Tianjin Univ, Natl Ind Educ Integrat Platform Energy Storage, Tianjin 300072, Peoples R China. zzuzhangxu@zzu.edu.cn; qhyangcn@tju.edu.cn; cpyang@tju.edu.cn |
Document URI: | http://hdl.handle.net/1942/43068 | ISSN: | 2380-8195 | e-ISSN: | 2380-8195 | DOI: | 10.1021/acsenergylett.4c00992 | ISI #: | 001228094800001 | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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