Nitrogen and Phosphorus Dual-Doped Graphene/Carbon Nanosheets as Bifunctional Electrocatalysts for Oxygen Reduction and Evolution
Chongqing University · China West Normal University
Abstract
It is highly desirable but challenging to develop bifunctional catalysts for efficiently catalyzing both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in energy storage and conversion systems. Here a simple yet cost-effective strategy is developed to fabricate nitrogen and phosphorus dual-doped graphene/carbon nanosheets (N,P-GCNS) with N,P-doped carbon sandwiching few-layers-thick graphene. The as-prepared N,P-GCNS shows outstanding catalytic activity toward both ORR and OER with a potential gap of 0.71 V between the OER potential at a current density of 10 mA cm–2 and the ORR potential at a current density of −3 mA cm–2, illustrating that it is the best metal-free bifunctional…
Citation impact
- FWCI
- 26.49
- Percentile
- 100%
- References
- 65
Authors
3Topics & keywords
- Bifunctional
- Graphene
- Catalysis
- Oxygen evolution
- Carbon fibers
- Materials science
- Electrocatalyst
- Nanotechnology
- Affordable and clean energy