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Tensile-strained CoS2 with superior lithium polysulfides conversion kinetics for low-temperature lithium-sulfur batteries
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DOI：10.1016/j.actamat.2026.122328.png)
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Abstract
En 中文
• Tensile strain engineering (∼4.0%) is introduced into CoS2 to intrinsically regulate its electronic structure, significantly enhancing lithium polysulfides adsorption and catalytic conversion kinetics. • Strain-induced d-band center upshifting weakens Li–S bonds and lowers the energy barrier for Li2S decomposition, enabling efficient liquid-solid conversion of lithium polysulfides, particularly under low-temperature conditions. • Lithium-sulfur batteries equipped with tensile-strained CoS2 exhibit outstanding low-temperature performance, delivering high capacity and long-term cycling stability down to -30 °C, demonstrating strong potential for extreme-environment applications.
Keywords:
Tensile strain
CoS2
Lithium-sulfur batteries
Polysulfide conversion
Low-temperature performance
Journal
IF:
9.3
Papers:
2.0W
Citations:
12.9W
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