All-solid-state batteries designed for operation under extreme cold conditions.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 39747842.
- Also identified by DOI 10.1038/s41467-024-55154-5 and PMC identifier 11696891.
- Licence recorded as CC BY-NC-ND.
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Abstract
A pressing need for enhancing lithium-ion battery (LIB) performance exists, particularly in ensuring reliable operation under extreme cold conditions. All-solid-state batteries (ASSBs) offer a promising solution to the challenges posed by conventional LIBs with liquid electrolytes in low-temperature environments. In this study, leveraging the benefits of amorphous solid-state electrolytes (SSEs) xLi<sub>3</sub>N-TaCl<sub>5</sub> (1 ≤ 3x ≤ 2), we develop ASSBs capable of functioning effectively under extreme cold conditions. The designed ASSBs, employing LiCoO<sub>2</sub> positive electrode with a mass loading of 4.46 mg cm<sup>‒2</sup> and a Li-In negative electrode, demonstrate initial discharge capacities of 183.19, 164.8 and 143.78 mAh g<sup>‒1</sup> under 18 mA g<sup>‒1</sup> at ‒10, ‒30, and ‒40 °C, respectively, and exhibit a final discharge capacity of 137.6 mAh g<sup>‒1</sup> at 18 mA g<sup>‒1</sup> and ‒30 °C in the 100th cycle. Moreover, the ASSBs demonstrate an initial discharge capacity of 51.94 mAh g<sup>‒1</sup> at 18 mA g<sup>‒1</sup> and ‒60 °C with cycling over 200 h.