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- Title
One‐Pot Fabrication of Crumpled N‐Doped Graphene Anchored with Cobalt for High‐Performance Lithium–Sulfur Batteries.
- Authors
Mao, Wutao; Ma, Chao; Ni, Ping; Li, Maolong; Ding, Yiming; Zhang, Shaojie; Pan, Junli; Cao, Fengpu; Bao, Keyan
- Abstract
The commercialization of sulfur batteries is hindered by a few inherent drawbacks. In this study, crumpled N‐doped graphene anchored with cobalt (Co‐NCG) was fabricated in one pot via a sample solvothermal method and applied to lithium‐sulfur (Li−S) batteries. The crumpled structure not only gives graphene a large specific surface area and abundant pores, but also endows graphene superb stability by preventing its restacking; these features are beneficial for loading and efficient utilization of sulfur. The lone pair electrons on the nitrogen atom underwent strong chemical interactions with Li ions, which lent the Co‐NCG/S material the ability to chemically immobilize polysulfide species. Cobalt acts as an electrocatalyst in the battery and kinetically accelerates sulfur redox reactions. As a result of these multifunctional arrangements, the Co‐NCG/S cathode showed excellent capacity retention and reaction kinetics and high sulfur loading capacity.
- Subjects
LITHIUM sulfur batteries; GRAPHENE; NONBONDING electron pairs; CHEMICAL kinetics; ELECTRON pairs; COBALT
- Publication
ChemElectroChem, 2020, Vol 7, Issue 7, p1733
- ISSN
2196-0216
- Publication type
Article
- DOI
10.1002/celc.202000182