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Regulating the Solvation Structure of Potassium Ions Using a Multidentate Ether in Potassium Metal Batteries
- Chao ChenChao ChenState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Chao Chen
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- Ji ZhouJi ZhouState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Ji Zhou
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- Wenbin GongWenbin GongSchool of Physics and Energy, Xuzhou University of Technology, Xuzhou 221018, ChinaMore by Wenbin Gong
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- Xueying FanXueying FanState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Xueying Fan
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- Xiaodong MengXiaodong MengState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Xiaodong Meng
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- Shang ChenShang ChenState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Shang Chen
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- Longhua SunLonghua SunState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Longhua Sun
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- Yongqiang MengYongqiang MengState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Yongqiang Meng
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- Kangjia TaoKangjia TaoState Key Laboratory of Organic−Inorganic Composites; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical TechnologyNo. 15 North Third Ring East Road, Chaoyang District, Beijing 100029, ChinaMore by Kangjia Tao
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- Burak ÜlgütBurak ÜlgütFaculty of Science, Department of Chemistry, Bilkent University, 06800 Ankara, TürkiyeMore by Burak Ülgüt
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- Pingchuan SunPingchuan SunKey Laboratory of Functional Polymer Materials of the Ministry of Education and College of Chemistry and State Key Laboratory of Medicinal Chemical Biology, Nankai University, Tianjin 300071, ChinaMore by Pingchuan Sun
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- Christopher W. BielawskiChristopher W. BielawskiCenter for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS), Ulsan 44919, Republic of KoreaDepartment of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaMore by Christopher W. Bielawski
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- Jianxin Geng*Jianxin Geng*Email: [email protected]State Key Laboratory of Separation Membranes and Membrane Processes; Tianjin Key Laboratory of Advanced Fibers and Energy Storage; School of Material Science and Engineering, Tiangong University, No. 399 BinShuiXi Road, XiQing District, Tianjin 300387, ChinaMore by Jianxin Geng
Abstract
Potassium (K) is regarded as an alternative to lithium (Li) for use in contemporary energy storage devices owing to its high abundance and low electrochemical potential. However, because K ions are larger than Li ions, they exhibit different solvation properties that can ultimately affect device performance. Herein, a multidentate ether-based electrolyte is demonstrated to effectively solvate K ions and the solvation structures can be further modulated with cosolvents. The use of the multidentate ether-based electrolyte also suppresses the formation of K dendrites and significantly enhances the cycling stability of K//K symmetric cells (e.g., over 2000 h at 0.25 mA cm–2).
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