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<p>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) <i>x</i>Li<sub>3</sub>N-TaCl<sub>5</sub> (1 ≤ 3<i>x</i> ≤ 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.</p>

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All-solid-state batteries designed for operation under extreme cold conditions

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月2日

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  • Bolong Hong,
  • Lei Gao,
  • Changping Li,
  • Genming Lai,
  • Jinlong Zhu,
  • Dubin Huang,
  • Yunxing Zuo,
  • Wen Yin,
  • Mengyu Sun,
  • Shusen Zhao,
  • Jiaxin Zheng,
  • Songbai Han,
  • Ruqiang Zou

摘要

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) xLi3N-TaCl5 (1 ≤ 3x ≤ 2), we develop ASSBs capable of functioning effectively under extreme cold conditions. The designed ASSBs, employing LiCoO2 positive electrode with a mass loading of 4.46 mg cm‒2 and a Li-In negative electrode, demonstrate initial discharge capacities of 183.19, 164.8 and 143.78 mAh g‒1 under 18 mA g‒1 at ‒10, ‒30, and ‒40 °C, respectively, and exhibit a final discharge capacity of 137.6 mAh g‒1 at 18 mA g‒1 and ‒30 °C in the 100th cycle. Moreover, the ASSBs demonstrate an initial discharge capacity of 51.94 mAh g‒1 at 18 mA g‒1 and ‒60 °C with cycling over 200 h.