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Xie H, Yang C, Ren Y, Xu S, Hamann TR, McOwen DW, Wachsman ED, Hu L. Amorphous-Carbon-Coated 3D Solid Electrolyte for an Electro-Chemomechanically Stable Lithium Metal Anode in Solid-State Batteries. Nano Lett 2021; 21:6163-6170. [PMID: 34259523 DOI: 10.1021/acs.nanolett.1c01748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The use of solid-state electrolyte may be necessary to enable safe, high-energy-density Li metal anodes for next-generation energy storage systems. However, the inhomogeneous local current densities during long-term cycling result in instability and detachment of the Li anode from the electrolyte, which greatly hinders practical application. In this study, we report a new approach to maintain a stable Li metal | electrolyte interface by depositing an amorphous carbon nanocoating on garnet-type solid-state electrolyte. The carbon nanocoating provides both electron and ion conducting capability, which helps to homogenize the lithium metal stripping and plating processes. After coating, we find the Li metal/garnet interface displays stable cycling at 3 mA/cm2 for more than 500 h, demonstrating the interface's outstanding electro-chemomechanical stability. This work suggests amorphous carbon coatings may be a promising strategy for achieving stable Li metal | electrolyte interfaces and reliable Li metal batteries.
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Affiliation(s)
- Hua Xie
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Chunpeng Yang
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Yaoyu Ren
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Shaomao Xu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
| | - Tanner R Hamann
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
- Maryland Energy Innovation Institute, College Park, Maryland 20742, United States
| | - Dennis Wayne McOwen
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
- Maryland Energy Innovation Institute, College Park, Maryland 20742, United States
| | - Eric D Wachsman
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
- Maryland Energy Innovation Institute, College Park, Maryland 20742, United States
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
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