Interactions between Dopants in Dual-Doped Graphene Nanoribbons as Metal-Free Bifunctional Catalysts for Fuel Cell and Metal-Air Batteries

MRS Advances ◽  
2016 ◽  
Vol 1 (6) ◽  
pp. 421-425 ◽  
Author(s):  
Zhenghang Zhao ◽  
Zhenhai Xia
Keyword(s):  
Noble Metals ◽  
High Efficiency ◽  
Graphene Nanoribbons ◽  
Low Cost ◽  
Reduction Reaction ◽  
Bifunctional Catalysts ◽  
Carbon Nanomaterial ◽  
Metal Free ◽  
Doped Graphene ◽  
Co Doped

ABSTRACTDuel p-block element doped carbon nanomaterial is a new kind of metal-free bifunctional catalysts for fuel cells and metal-air batteries because of their low-cost and high efficiency compared to traditional noble metals and their alloys. To optimize co-doped catalysts, we studied the interactions of dopants on the doped graphene and their effect on oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). It is found that the interactions between N and X (P, B, S) occur within a distance of ∼0.5 nm, and beyond the distance their interactions are limited while the interactions between N and Cl take places beyond the distance of ∼0.5 nm.

Nitrogen and sulfur co-doped graphene nanoribbons: A novel metal-free catalyst for high performance electrochemical detection of 2, 4, 6-trinitrotoluene (TNT)

Carbon ◽  
2018 ◽  
Vol 126 ◽  
pp. 328-337 ◽  
Author(s):  
Ruizhong Zhang ◽  
Chunmei Zhang ◽  
Fuqin Zheng ◽  
Xiaokun Li ◽  
Chia-Liang Sun ◽  
...  
Keyword(s):  
Electrochemical Detection ◽  
High Performance ◽  
Graphene Nanoribbons ◽  
Metal Free ◽  
Doped Graphene ◽  
Co Doped

Iron and nitrogen co-doped hierarchical porous graphitic carbon for a high-efficiency oxygen reduction reaction in a wide range of pH

2016 ◽  
Vol 4 (37) ◽  
pp. 14364-14370 ◽  
Author(s):  
Wenling Gu ◽  
Liuyong Hu ◽  
Jing Li ◽  
Erkang Wang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Efficiency ◽  
Low Cost ◽  
Reduction Reaction ◽  
Porous Graphitic Carbon ◽  
Graphitic Carbon ◽  
Hierarchical Porous ◽  
Wide Range ◽  
Co Doped

A template-free oxygen reduction reaction (ORR) catalyst Fe and N co-doped hierarchical porous graphitic carbon (Fe,N/PGC) was prepared by pyrolyzing a nontoxic and low-cost iron-coordinated polydopamine polymer precursor at 800 °C. The obtained catalyst manifests outstanding oxygen reduction activity in a wide range of pH.

One-pot synthesis of nitrogen and sulfur co-doped graphene as efficient metal-free electrocatalysts for the oxygen reduction reaction

2014 ◽  
Vol 50 (37) ◽  
pp. 4839-4842 ◽  
Author(s):  
Xin Wang ◽  
Jie Wang ◽  
Deli Wang ◽  
Shuo Dou ◽  
Zhaoling Ma ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Current Density ◽  
Reaction Pathway ◽  
Reduction Reaction ◽  
One Pot ◽  
Onset Potential ◽  
Metal Free ◽  
Doped Graphene ◽  
Co Doped

Novel N and S co-doped graphene (NSG) was prepared by annealing GO with thiourea. The NSG electrodes show a direct four-electron reaction pathway, higher onset potential, current density and stability than undoped graphene.

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