Designing electrolytes with high solubility of sulfides/disulfides for high-energy-density and low-cost K-Na/S batteries

Liying Tian; Zhenghao Yang; Shiyi Yuan; Tye Milazzo; Qian Cheng; Syed Rasool; Wenrui Lei; Wenbo Li; Yucheng Yang; Tianwei Jin; Shengyu Cong; Joseph Francis Wild; Yonghua Du; Tengfei Luo; Donghui Long; Yuan Yang

doi:10.1038/s41467-024-51905-6

Designing electrolytes with high solubility of sulfides/disulfides for high-energy-density and low-cost K-Na/S batteries

Liying Tian, Zhenghao Yang, Shiyi Yuan, Tye Milazzo, Qian Cheng, Syed Rasool, Wenrui Lei, Wenbo Li, Yucheng Yang, Tianwei Jin, Shengyu Cong, Joseph Francis Wild, Yonghua Du, Tengfei Luo^*, Donghui Long^*, Yuan Yang^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Alkaline metal sulfur (AMS) batteries offer a promising solution for grid-level energy storage due to their low cost and long cycle life. However, the formation of solid compounds such as M₂S₂ and M₂S (M = Na, K) during cycling limits their performance. Here we unveil intermediate-temperature K-Na/S batteries utilizing advanced electrolytes that dissolve all polysulfides and sulfides (K₂S_x, x = 1–8), significantly enhancing reaction kinetics, specific capacity, and energy density. These batteries achieve near-theoretical capacity (1655 mAh g⁻¹ sulfur) at 75 °C with a 1 M sulfur concentration. At a 4 M sulfur concentration, they deliver 830 mAh g⁻¹ at 2 mA cm⁻², retaining 71% capacity after 1000 cycles. This new K-Na/S battery with specific energy of 150-250 Wh kg⁻¹ only employs earth-abundant elements, making it attractive for long-duration energy storage.

Original language	English
Article number	7771
Journal	Nature Communications
Volume	15
Issue number	1
DOIs	https://doi.org/10.1038/s41467-024-51905-6
Publication status	Published - Dec 2024
Externally published	Yes

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Tian, L., Yang, Z., Yuan, S., Milazzo, T., Cheng, Q., Rasool, S., Lei, W., Li, W., Yang, Y., Jin, T., Cong, S., Wild, J. F., Du, Y., Luo, T., Long, D., & Yang, Y. (2024). Designing electrolytes with high solubility of sulfides/disulfides for high-energy-density and low-cost K-Na/S batteries. Nature Communications, 15(1), Article 7771. https://doi.org/10.1038/s41467-024-51905-6

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title = "Designing electrolytes with high solubility of sulfides/disulfides for high-energy-density and low-cost K-Na/S batteries",

abstract = "Alkaline metal sulfur (AMS) batteries offer a promising solution for grid-level energy storage due to their low cost and long cycle life. However, the formation of solid compounds such as M2S2 and M2S (M = Na, K) during cycling limits their performance. Here we unveil intermediate-temperature K-Na/S batteries utilizing advanced electrolytes that dissolve all polysulfides and sulfides (K2Sx, x = 1–8), significantly enhancing reaction kinetics, specific capacity, and energy density. These batteries achieve near-theoretical capacity (1655 mAh g−1 sulfur) at 75 °C with a 1 M sulfur concentration. At a 4 M sulfur concentration, they deliver 830 mAh g−1 at 2 mA cm−2, retaining 71% capacity after 1000 cycles. This new K-Na/S battery with specific energy of 150-250 Wh kg−1 only employs earth-abundant elements, making it attractive for long-duration energy storage.",

author = "Liying Tian and Zhenghao Yang and Shiyi Yuan and Tye Milazzo and Qian Cheng and Syed Rasool and Wenrui Lei and Wenbo Li and Yucheng Yang and Tianwei Jin and Shengyu Cong and Wild, {Joseph Francis} and Yonghua Du and Tengfei Luo and Donghui Long and Yuan Yang",

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doi = "10.1038/s41467-024-51905-6",

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AU - Tian, Liying

AU - Yang, Zhenghao

AU - Yuan, Shiyi

AU - Milazzo, Tye

AU - Cheng, Qian

AU - Rasool, Syed

AU - Lei, Wenrui

AU - Li, Wenbo

AU - Yang, Yucheng

AU - Jin, Tianwei

AU - Cong, Shengyu

AU - Wild, Joseph Francis

AU - Du, Yonghua

AU - Luo, Tengfei

AU - Long, Donghui

AU - Yang, Yuan

PY - 2024/12

Y1 - 2024/12

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AB - Alkaline metal sulfur (AMS) batteries offer a promising solution for grid-level energy storage due to their low cost and long cycle life. However, the formation of solid compounds such as M2S2 and M2S (M = Na, K) during cycling limits their performance. Here we unveil intermediate-temperature K-Na/S batteries utilizing advanced electrolytes that dissolve all polysulfides and sulfides (K2Sx, x = 1–8), significantly enhancing reaction kinetics, specific capacity, and energy density. These batteries achieve near-theoretical capacity (1655 mAh g−1 sulfur) at 75 °C with a 1 M sulfur concentration. At a 4 M sulfur concentration, they deliver 830 mAh g−1 at 2 mA cm−2, retaining 71% capacity after 1000 cycles. This new K-Na/S battery with specific energy of 150-250 Wh kg−1 only employs earth-abundant elements, making it attractive for long-duration energy storage.

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SN - 2041-1723

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JF - Nature Communications

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Designing electrolytes with high solubility of sulfides/disulfides for high-energy-density and low-cost K-Na/S batteries

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