期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 14, 页码 6424-6431出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta11165c
关键词
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资金
- Chongqing University
- Fundamental Research Funds for the Central Universities [0241005202014, 0903005203403]
- National Natural Science Foundation of China [51572182, 11372104, 11372363, 11332013, 5121543, 11632004]
- Key Program for International Science and Technology Cooperation Projects of the Ministry of Science and Technology of China [2016YFE0125900]
- National University of Singapore
- National Research Foundation, Prime Minister's Office, Singapore under its Competitive Research Programme (CRP) [NRF-CRP 8-2011-04]
- Russian Foundation for Basic Research [16-29-06439]
- Russian Science Foundation [17-13-01365]
The development of solid electrolytes with superior electrical and electrochemical performances for the room-temperature operation of sodium (Na)-based batteries is at the infant stage and still remains a challenge. Herein, we, for the first time, report hybrid solid electrolytes consisting of PEO20-NaClO4-5% SiO2-x% Emim FSI (x = 50, 70) designed for solid-state Na-metal batteries. The hybrid design yields a solid electrolyte featuring a high room-temperature ionic conductivity of 1.3 x 10(-3) S cm(-1), suitable mechanical property, a wide voltage stability window of 4.2 V and a high Na+ transference number of 0.61. A prototypical Na-metal battery using this hybrid solid electrolyte demonstrates promising longterm cycling performances at room temperature and at an elevated temperature of 60 degrees C for 100 cycles. The finding implies that the hybrid solid electrolyte is promising for Na-metal batteries operating at room temperature.
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