期刊
JOURNAL OF POWER SOURCES
卷 472, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2020.228571
关键词
Li-metal battery; Solid-state battery; Garnet-type LLZO electrolyte; Interface engineering; Battery architecture design; High energy density
资金
- US Department of Energy Advanced Research Projects Agency -Energy [DE-AR0000384]
- US Department of Energy [DE-EE0008201]
Garnet-based solid-state Li metal batteries have been widely considered one of the most promising next-generation energy storage systems. However, the performance of these batteries is plagued by various limitations caused by the solid-state electrolyte (SSE). The poor wetting of lithium on the garnet surface diminishes the contact between the anode and electrolyte, leading to extremely high anode interfacial resistance. Similarly, the point-to-point contact between the cathode and electrolyte leads to high impedance on the cathode side. Moreover, although the SSE serves a firm barrier separating the anode and cathode, lithium dendrites can still grow through, causing a short circuit. Finally, the solid/solid interface cannot be well maintained under cycling at high current density and capacity. Recently, remarkable progress has been achieved in garnet electrolyte to resolve these problems towards the aim of a high-performance solid-state Li metal battery. In this perspective, we highlight various recent advances in the field of garnet-based solid-state battery, including improving the anode/ electrolyte interface, lithium dendrite detection, reducing cathode impedance, and electrolyte architecture design.
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