期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 121, 期 3, 页码 1431-1435出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.6b10268
关键词
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资金
- Strategic Priority Research Program of the Chinese Project Academy of Science [XDA09010201]
- China Postdoctoral Science Foundation [2015M570529]
- National Natural Science Foundation of China [51371186]
- Ningbo 3315 International Team of Advanced Energy Storage Materials, Zhejiang Province Key Science and Technology Innovation Team [2013TD16]
We introduced the nanoconcept in the oxide solid electrolyte Li7La3Zr2O12 (LLZO). All-solid-state Li/LiFePO4 (LFPO) cell using this solid electrolyte with thickness of several micrometers was assembled with appropriate solvent, dispersant, adhesives, and surfactant without cold- or hot-pressing. At room temperature, the Li/LLZO/LFPO cell showed the first discharge capacity of 160.4 mAh g(-1), which was 94.4% of the theoretical capacity of LFPO, and the cell provided a discharge capacity of 136.8 mAh g(-1) after 100 cycles. At 60 degrees C, the battery presented more stable electrochemical performance. The capacity loss during cycles 2-100 was only 0.06% (0.7 mAh g(-1)). The excellent performance could be attributed to the ultrathin solid electrolyte film.
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