Nano-Micro Letters (Mar 2023)

Dual-Functional Lithiophilic/Sulfiphilic Binary-Metal Selenide Quantum Dots Toward High-Performance Li–S Full Batteries

  • Youzhang Huang,
  • Liang Lin,
  • Yinggan Zhang,
  • Lie Liu,
  • Baisheng Sa,
  • Jie Lin,
  • Laisen Wang,
  • Dong-Liang Peng,
  • Qingshui Xie

DOI
https://doi.org/10.1007/s40820-023-01037-1
Journal volume & issue
Vol. 15, no. 1
pp. 1 – 18

Abstract

Read online

Highlights A bi-service host with lithiophilic/sulfiphilic Fe2CoSe4 quantum dots embedded in three-dimensional ordered nitrogen-doped carbon skeleton is elaborately developed for both the sulfur cathode and Li anode synchronously. The highly dispersed Fe2CoSe4 quantum dots can not only act as a redox accelerator to promote the bidirectional conversion of LiPSs but also regulate the uniform Li plating/stripping to mitigate the growth of Li dendrite. The assembled Li-S full batteries achieve excellent long-term cyclability and a remarkable areal capacity of 8.41 mAh cm2 at high sulfur loading of 8.50 mg cm2, and the pouch full battery also displays high capacity and cycling-stability at lean electrolyte condition.

Keywords