期刊
BATTERIES & SUPERCAPS
卷 2, 期 7, 页码 638-658出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/batt.201900031
关键词
Li-O-2 batteries; lithium metal anode; advanced characterization; effective modifications
资金
- National Key Research and Development Program [2016YFA0202500]
- National Natural Science Foundation of China [51822211, 21776019, 21676160, 21825501]
- Beijing Municipal Science & Technology Commission [D181100004518003]
- Beijing Key Research and Development Plan [Z181100004518001]
Rechargeable Li-O-2 batteries play an increasing important role as energy storage devices, which have both, a high capacity anode and a cathode using an inexhaustible resource. As a key component in Li-O-2 batteries, the Li-metal anode suffers from major drawbacks related to Li dendrite formation and SEI layer growth, which are also major issues for Li-metal rechargeable batteries. This review presents an overview on the scientific challenges, fundamental mechanisms and modification strategies of Li-metal anodes for Li-O-2 batteries. Firstly, basic principles and challenges on Li-metal anodes are briefly retrospected. We further summarize and categorize the prevailing characterization techniques based on Li dendrite morphology characterization and SEI composition analysis. The up-to-date development of in-situ and operando characterization is also included. Following the obtained insights, effective protection/modification strategies towards practical application for Li-O-2 batteries are presented. Furthermore, we highlight the significance of advanced characterization techniques in interrogating the buried keys for solving practical hindrances for Li-O-2 batteries. The comprehensive characterization and analysis of Li anodes, cathodes, and electrolytes by various methods together with the development of novel techniques are expected to be indispensable to gain a thorough understanding of the battery operation and for offering guidelines for their practical development.
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