期刊
ENERGY STORAGE MATERIALS
卷 29, 期 -, 页码 172-181出版社
ELSEVIER
DOI: 10.1016/j.ensm.2020.04.017
关键词
Polyoxometalate; Polymer composite; Nanowire; Ion conductivity; Solid-state battery
资金
- NSFC [21871141, 21871142, 21701085, 21825501, U1801257, 21901122]
- NSF of Jiangsu Province of China [BK20171032]
- Natural Science Research of Jiangsu Higher Education Institutions of China [17KJB150025, 19KJB150011]
- National Key Research and Development Program - China Postdoctoral Science Foundation [2016YFA0202500, 2018M630572, 2019M651873]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX19_0781]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Foundation of Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials
All-solid-state batteries are emerging as the new generation devices for safe and stable energy storage. However, insufficient ion conductivity of solid electrolyte impairs their practical applications. Herein, a series of fast alkali-ion conductor, polymer/polyoxovanadate hybrid nanowires were fabricated as solid electrolyte by a facile and scalable polyoxovanadate-induced self-assembly method. Combining abundant mobile alkali-ions and terminal oxygen atoms (Lewis base sites) of polyoxovanadates with the ion-migration favoured nanowire assemblage, ultrahigh ion conductivities of universal alkali-ions (25 degrees C, 3.30 x 10(-3), 2.00 x 10(-3), and 4.55 x 10(-3) S cm(-1) for Li+, Na+ and K+ respectively) with low active energies are achieved. Remarkably, the hybrid solid-state electrolytes were applied in solid-state lithium and potassium batteries, exhibiting remarkable rate capability and comparable cycling stability. The chemical and structural design of polyoxometalate/polymer hybrid solid-state electrolyte shed light on the material design and chemical investigation of next-generation all-solid-state batteries.
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