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Cross-linked beta alumina nanowires with compact gel polymer electrolyte coating for ultra-stable sodium metal battery

Open access
Lei, Danni, He, Yan-Bing, Huang, Huijuan, Yuan, Yifei, Zhong, Guiming, Zhao, Qiang, Hao, Xiaoge, Zhang, Danfeng, Lai, Chen, Zhang, Siwei, Ma, Jiabin, Wei, Yinping, Yu, Qipeng, Lv, Wei, Yu, Yan, Li, Baohua, Yang, Quan-Hong, Yang, Yong, Lu, Jun, Kang, Feiyu·2019·Nature Communications

Abstract

Sodium metal batteries have potentially high energy densities, but severe sodium-dendrite growth and side reactions prevent their practical applications, especially at high temperatures. Herein, we design an inorganic ionic conductor/gel polymer electrolyte composite, where uniformly cross-linked beta alumina nanowires are compactly coated by a poly(vinylidene fluoride-co-hexafluoropropylene)-based gel polymer electrolyte through their strong molecular interactions. These beta alumina nanowires combined with the gel polymer layer create dense and homogeneous solid-liquid hybrid sodium-ion transportation channels through and along the nanowires, which promote uniform sodium deposition and formation of a stable and flat solid electrolyte interface on the sodium metal anode. Side reactions between the sodium metal and liquid electrolyte, as well as sodium dendrite formation, are successfully suppressed, especially at 60 °C. The sodium vanadium phosphate/sodium full cells with composite electrolyte exhibit 95.3% and 78.8% capacity retention after 1000 cycles at 1 C at 25 °C and 60 °C, respectively.

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Metadata

Authors
Lei, D., He, Y.-B., Huang, H., Yuan, Y., Zhong, G., Zhao, Q., Hao, X., Zhang, D., Lai, C., Zhang, S., Ma, J., Wei, Y., Yu, Q., Lv, W., Yu, Y., Li, B., Yang, Q.-H., Yang, Y., Lu, J., & Kang, F.
Venue
Nature Communications
Published
2019-09-18
Volume
10
Issue
1
Pages
4244-4244
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2974608400
Cited by
332
References
1
FWCI
14.54
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Cross-linked beta alumina nanowires with compact gel polymer electrolyte coating for ultra-stable sodium metal battery. https://app.cochat.ai/papers/10.1038/s41467-019-11960-w
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Lei, D., He, Y.-B., Huang, H., Yuan, Y., Zhong, G., Zhao, Q., Hao, X., Zhang, D., Lai, C., Zhang, S., Ma, J., Wei, Y., Yu, Q., Lv, W., Yu, Y., Li, B., Yang, Q.-H., Yang, Y., Lu, J., & Kang, F. (2019). Cross-linked beta alumina nanowires with compact gel polymer electrolyte coating for ultra-stable sodium metal battery. Nature Communications. https://doi.org/10.1038/s41467-019-11960-w

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