Fully Conjugated Phthalocyanine Copper Metal-Organic Frameworks for Sodium-Iodine Batteries with Long-Time-Cycling Durability

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dc.contributor.author Wang, Faxing ko
dc.contributor.author Liu, Zaichun ko
dc.contributor.author Yang, Chongqing ko
dc.contributor.author Zhong, Haixia ko
dc.contributor.author Nam, Gyutae ko
dc.contributor.author Zhang, Panpan ko
dc.contributor.author Dong, Renhao ko
dc.contributor.author Wu, Yuping ko
dc.contributor.author Cho, Jaephil ko
dc.contributor.author Zhang, Jian ko
dc.contributor.author Feng, Xinliang ko
dc.date.available 2020-02-13T08:41:07Z -
dc.date.created 2020-02-10 ko
dc.date.issued 2020-01 ko
dc.identifier.citation ADVANCED MATERIALS, v.32, no.4, pp.1905361 ko
dc.identifier.issn 0935-9648 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/31128 -
dc.description.abstract Rechargeable sodium-iodine (Na-I-2) batteries are attracting growing attention for grid-scale energy storage due to their abundant resources, low cost, environmental friendliness, high theoretical capacity (211 mAh g(-1)), and excellent electrochemical reversibility. Nevertheless, the practical application of Na-I-2 batteries is severely hindered by their poor cycle stability owing to the serious dissolution of polyiodide in the electrolyte during charge/discharge processes. Herein, the atomic modulation of metal-bis(dihydroxy) species in a fully conjugated phthalocyanine copper metal-organic framework (MOF) for suppression of polyiodide dissolution toward long-time cycling Na-I-2 batteries is demonstrated. The Fe-2[(2,3,9,10,16,17,23,24-octahydroxy phthalocyaninato)Cu] MOF composited with I-2 (Fe-2-O-8-PcCu/I-2) serves as a cathode for a Na-I-2 battery exhibiting a stable specific capacity of 150 mAh g(-1) after 3200 cycles and outperforming the state-of-the-art cathodes for Na-I-2 batteries. Operando spectroelectrochemical and electrochemical kinetics analyses together with density functional theory calculations reveal that the square planar iron-bis(dihydroxy) (Fe-O-4) species in Fe-2-O-8-PcCu are responsible for the binding of polyiodide to restrain its dissolution into electrolyte. Besides the monovalent Na-I-2 batteries in organic electrolytes, the Fe-2-O-8-PcCu/I-2 cathode also operates stably in other metal-I-2 batteries like aqueous multivalent Zn-I-2 batteries. Thus, this work offers a new strategy for designing stable cathode materials toward high-performance metal-iodine batteries. ko
dc.language 영어 ko
dc.publisher WILEY-V C H VERLAG GMBH ko
dc.title Fully Conjugated Phthalocyanine Copper Metal-Organic Frameworks for Sodium-Iodine Batteries with Long-Time-Cycling Durability ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-85076373955 ko
dc.identifier.wosid 000509536700016 ko
dc.type.rims ART ko
dc.identifier.doi 10.1002/adma.201905361 ko
dc.identifier.url https://onlinelibrary.wiley.com/doi/full/10.1002/adma.201905361 ko
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