Design Principles of Single Atoms on Carbons for Lithium–Sulfur Batteries

Schematic of the design principles of single atoms in Li-S batteries

Scientific Achievement

We summarize the latest strategies for single atoms (SAs) supported on carbons for the application of Li-S batteries, including cathode, modified separator, and Li metal anode. The future directions of SAs in Li-S batteries are proposed.

Significance and Impact

This review provides a systematic understanding of how the SAs as catalysis, adsorption, and nucleation centers can help build better Li-S batteries.

Research Details

  • SAs with high catalytic ability can solve the issue of sluggish solid (S8)-liquid (Li2Sx, 4 ≤ x ≤ 8)-solid (Li2S2 and Li2S) transition kinetics by reducing the energy barriers.
  • The high adsorption capacity of soluble lithium polysulfides of SAs is essential for inhibition of the shuttle effect.
  • SAs as homogeneous nucleation seeds can induce Li uniform deposition under low overpotential without Li dendrites formation.

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DOI: 10.1002/smtd.202000315

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