期刊
SOLID STATE IONICS
卷 337, 期 -, 页码 140-146出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2019.04.022
关键词
Single-ion conducting gel polymer electrolyte; Polyanion structure; Sodium dendrites; Elevated-temperature sodium metal batteries
资金
- National Science Fund for Distinguished Young Scholars [51625204]
- National Key R&D Program of China [2018YFB0104300]
- National Natural Science Foundation of China [U1706229, 51803230]
- Key Program of the Chinese Academy of Sciences [KFZD-SW-414]
- Key Scientific and Technological Innovation Project of Shandong [2017CXZC0505]
- Shandong Natural Science Foundation [ZR2016BQ18]
A novel polymeric sodium tartaric acid borate is synthesized and blended with poly(vinylene carbonate) to prepare a single-ion conducting gel polymer electrolyte (PSP-GPE). The PSP-GPE possesses a superior ionic conductivity of 1 x 10(-4) S cm(-1) at ambient temperature and a high sodium ion transference number of 0.88. Compared to the NaClO4 based liquid electrolyte, the Na3V2(PO4)(3)/Na battery assembled with the PSP-GPE exhibits improved cycling performance, especially at elevated temperatures, and effective suppression of sodium dendrites. This work demonstrates a promising method to design single-ion conducting gel polymer electrolytes for elevated-temperature sodium metal batteries.
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