Sodium Octahydridotriborate as a Solid Electrolyte with Excellent Stability Against Sodium-Metal Anode.

Autor: Chen XW; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Kang JX; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Fan ZH; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Zhang N; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Zhang WY; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Zhang GG; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Zhu AQ; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Lu ZW; College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China., Qiu P; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China., Wu Y; Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH, 43210, USA., Chen X; Henan Key Laboratory of Boron Chemistry and Advanced Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China.; College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Oct; Vol. 20 (40), pp. e2401439. Date of Electronic Publication: 2024 Jun 07.
DOI: 10.1002/smll.202401439
Abstrakt: Solid-state sodium metal batteries have been extensively investigated because of their potential to improve safety, cost-effectiveness, and energy density. The development of such batteries urgently required a solid-state electrolyte with fast Na-ion conduction and favorable interfacial compatibility. Herein, the progress on developing the NaB 3 H 8 solid-state electrolytes is reported, which show a liquid-like ionic conductivity of 0.05 S cm -1 at 56 °C with an activation energy of 0.35 eV after an order-disorder phase transformation, matching or surpassing the best single-anion hydridoborate conductors investigated up to now. The steady polarization voltage and significantly decreased resistance are achieved in the symmetric Na/NaB 3 H 8 /Na cell, indicating the great electrochemical stability and favorable interfacial contact with the Na metal of NaB 3 H 8 . Furthermore, a Na/NaB 3 H 8 /TiS 2 battery, the first high-rate (up to 1 C) solid-state sodium metal battery using the single-anion hydridoborate electrolyte, is demonstrated, which exhibits superior rate capability (168.2 mAh g -1 at 0.1 C and 141.2 mAh g -1 at 1 C) and long-term cycling stability (70.9% capacity retention at 1 C after 300 cycles) at 30 °C. This work may present a new possibility to solve the interfacial limitations and find a new group of solid-state electrolytes for high-performance sodium metal batteries.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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