Mingliang Liu, Dr. Zhen Wu, Shujun Liu, Dr. Tong Guo, Peng Chen, Xuan Cao, Shencheng Pan, Dr. Tianhong Zhou, Lea Pompizii, Murad Najafov, Prof. Dr. Ali Coskun, Prof. Dr. Yongsheng Fu
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引用次数: 0
Abstract
Regulating the transformation of sulfur species is the key to improving the electrochemical performance of lithium-sulfur (Li−S) batteries, in particular, to accelerate the reversible conversion between solid phase Li2S2 and Li2S. Herein, we introduced Spidroin, which is a main protein in spider silk, as a dual functional separator coating in Li−S batteries to effectively adsorb polysulfides via the sequence of amino acids in its primary structure and regulate Li+ flux through the β-sheet of its secondary structure, thus accelerating the reversible transformation between Li2S2 and Li2S. Spidroin-based Li−S cells exhibited an exceptional electrochemical performance with a high specific capacity of 744.1 mAh g−1 at 5 C and a high areal capacity of 7.5 mAh cm−2 at a low electrolyte-to-sulfur (E/S) ratio of 6 μL mgs−1 and a sulfur loading of 8.6 mgs cm−2.
期刊介绍:
Angewandte Chemie, a journal of the German Chemical Society (GDCh), maintains a leading position among scholarly journals in general chemistry with an impressive Impact Factor of 16.6 (2022 Journal Citation Reports, Clarivate, 2023). Published weekly in a reader-friendly format, it features new articles almost every day. Established in 1887, Angewandte Chemie is a prominent chemistry journal, offering a dynamic blend of Review-type articles, Highlights, Communications, and Research Articles on a weekly basis, making it unique in the field.