期刊
ADVANCED ENERGY MATERIALS
卷 10, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201903325
关键词
3D Li metal anodes; anode-electrolyte interface; gel polymer electrolytes; in situ encapsulation; solid-state batteries
类别
资金
- Basic Science Center Project of Natural Science Foundation of China [51788104]
- National Key R&D Program of China [2016YFA0202500]
- National Natural Science Foundation of China [21773264, 21805062, 21975266]
- Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of Chinese Academy of Sciences [XDA21070300]
- Beijing Natural Science Foundation [L172023]
- China Postdoctoral Science Foundation [2019T120136, 2018M640185]
- Recruitment Program of Global Youth Experts of China
- Chinese Academy of Sciences
To reconcile the energy storage ability and operational safety of lithium metal batteries (LMBs), a transformation from a liquid to a solid-state system is required. However, Li volume variation, poor interfacial contact, and high operation temperatures hinder its practical applications. To address the above issues, here, an integral structure design for solid-state LMBs is shown, in which a Li-preinfused 3D carbon fiber (Li/CF) anode is ionically connected to a cathode via an autopolymerized gel electrolyte. The gel electrolyte helps to encapsulate the liquid electrolyte within the Li/CF anode and the cathode to improve the interfacial contact. The gel also serves as a reservoir that balances the liquid electrolyte supply during repeated Li stripping/plating process. As a result, the symmetrical cells and full cells with Li/CF electrodes exhibit improved cycling stability and effective suppression of dendrites at ambient temperature. This work facilitates the realization of solid-state LMBs with high energy and high safety.
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