Fe3O4-doped mesoporous carbon cathode with a plumber’s nightmare structure for high-performance Li-S batteries

Han Zhang, Mengtian Zhang, Ruiyi Liu, Tengfeng He, Luoxing Xiang, Xinru Wu, Zhihong Piao, Yeyang Jia, Chongyin Zhang, Hong Li (), Fugui Xu (), Guangmin Zhou () and Yiyong Mai ()
Additional contact information
Han Zhang: Shanghai Jiao Tong University
Mengtian Zhang: Tsinghua University
Ruiyi Liu: Shanghai Jiao Tong University
Tengfeng He: Ltd.
Luoxing Xiang: Shanghai Jiao Tong University
Xinru Wu: Tsinghua University
Zhihong Piao: Tsinghua University
Yeyang Jia: Tsinghua University
Chongyin Zhang: Ltd.
Hong Li: Tsinghua University
Fugui Xu: Shanghai Jiao Tong University
Guangmin Zhou: Tsinghua University
Yiyong Mai: Shanghai Jiao Tong University

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Shuttling of lithium polysulfides and slow redox kinetics seriously limit the rate and cycling performance of lithium-sulfur batteries. In this study, Fe3O4-dopped carbon cubosomes with a plumber’s nightmare structure (SP-Fe3O4-C) are prepared as sulfur hosts to construct cathodes with high rate capability and long cycling life for Li-S batteries. Their three-dimensional continuous mesochannels and carbon frameworks, along with the uniformly distributed Fe3O4 particles, enable smooth mass/electron transport, strong polysulfides capture capability, and fast catalytic conversion of the sulfur species. Impressively, the SP-Fe3O4-C cathode exhibits top-level comprehensive performance, with high specific capacity (1303.4 mAh g−1 at 0.2 C), high rate capability (691.8 mAh gFe3O41 at 5 C), and long cycling life (over 1200 cycles). This study demonstrates a unique structure for high-performance Li-S batteries and opens a distinctive avenue for developing multifunctional electrode materials for next-generation energy storage devices.

Date: 2024
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DOI: 10.1038/s41467-024-49826-5

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