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

Abstract Shuttling of lithium polysulfides and slow redox kinetics seriously limit the rate and cycling performance of lithium-sulfur batteries. In this study, Fe 3 O 4 -dopped carbon cubosomes with a plumber’s nightmare structure (SP-Fe 3 O 4 -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 Fe 3 O 4 particles, enable smooth mass/electron transport, strong polysulfides capture capability, and fast catalytic conversion of the sulfur species. Impressively, the SP-Fe 3 O 4 -C cathode exhibits top-level comprehensive performance, with…

• SS
  Salt Science Research Foundation
• NN
  National Natural Science Foundation of China

  Awards: 52073173, 22225501, 52203268, 2019YFA0705703, 52072205, U21A20174
• SJ
  Shanghai Jiao Tong University

  Award: JDSX2022025
• NK
  National Key Research and Development Program of China

  Awards: U21A20174, 2019YFA0705703, 52072205
• PO
  Program of Shanghai Academic Research Leader

  Award: 23XD1431700
• TS
  Tsinghua Shenzhen International Graduate School