Journal
JOURNAL OF POWER SOURCES
Volume 389, Issue -, Pages 120-134Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2018.04.019
Keywords
Li7La3Zr2O12; Garnet solid electrolyte; Solid-state lithium battery; Ionic conductivity; Interfacial property
Funding
- National Key Basic Research Program of China [2014CB932400]
- Joint Fund of the National Natural Science Foundation of China [U1401243]
- National Nature Science Foundation of China [51232005]
- Shenzhen Technical Plan Project [JCYJ20150529164918735, JCYJ20170412170911187, KQJSCX-20160226191136]
- Guangdong Technical Plan Project [2015TX01N011]
- Research Grants Council of Hong Kong [T23-407/13-N]
- Hong Kong Scholars Program [XJ2015027]
- China Postdoctoral Science Foundation [2016 M601018]
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Garnet Li7La3Zr2O12 (LLZO) solid electrolytes recently have attracted tremendous interest as they have the potential to enable all solid-state lithium batteries (ASSLBs) owing to high ionic conductivity (10(-3) to 10(-4) S cm(-1)), negligible electronic transport, wide potential window (up to 9 V), and good chemical stability. Here we present the key issues and challenges of LLZO in the aspects of ion conduction property, interfacial compatibility, and stability in air. First, different preparation methods of LLZO are reviewed. Then, recent progress about the improvement of ionic conductivity and interfacial property between LLZO and electrodes are presented. Finally, we list some emerging LLZO-based solid-state batteries and provide perspectives for further research. The aim of this review is to summarize the up-to-date developments of LLZO and lead the direction for future development which could enable LLZO-based ASSLBs.
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