Edge-Site-Free and Topological-Defect-Rich Carbon Cathode for High-Performance Lithium-Oxygen Batteries.

ABSTRACT: The rational design of a stable and catalytic carbon cathode is crucial for the development of rechargeable lithium-oxygen (LiO₂ ) batteries. An edge-site-free and topological-defect-rich graphene-based material is proposed as a pure carbon cathode that drastically improves LiO₂ battery performance, even in the absence of extra catalysts and mediators. The proposed graphene-based material is synthesized using the advanced template technique coupled with high-temperature annealing at 1800 °C. The material possesses an edge-site-free framework and mesoporosity, which is crucial to achieve excellent electrochemical stability and an ultra-large capacity (>6700 mAh g^-1 ). Moreover, both experimental and theoretical structural characterization demonstrates the

SUBMITTER: Yu W 

PROVIDER: S-EPMC10238210 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature