Remarkable electrochemical properties of electrochemically reduced graphene oxide towards oxygen reduction reaction are caused by residual metal-based impurities

2016 ◽  
Vol 62 ◽  
pp. 17-20 ◽  
Author(s):  
Lu Wang ◽  
Chun Kiang Chua ◽  
Bahareh Khezri ◽  
Richard D. Webster ◽  
Martin Pumera
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Electrochemical Properties ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide

scholarly journals Oxygen reduction reaction by electrochemically reduced graphene oxide

2014 ◽  
Vol 173 ◽  
pp. 415-428 ◽  
Author(s):  
Santosh Kumar Bikkarolla ◽  
Peter Cumpson ◽  
Paul Joseph ◽  
Pagona Papakonstantinou
Keyword(s):  
Electron Transfer ◽  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Potential Range ◽  
X Ray ◽  
Reduced Graphene ◽  
Electrochemically Reduced Graphene Oxide

We show that a partially reduced graphene oxide electrocatalyst, synthesized by electrochemical reduction of graphene oxide (GO), displays significantly enhanced catalytic activity towards the oxygen reduction reaction (ORR) in alkaline solutions compared to the starting GO. The electrochemical partial reduction of GO was confirmed by X-ray diffraction and X-ray photoelectron spectroscopy. Electrochemical impedance spectroscopy (EIS) verified the enhanced electron transfer ability of the electrochemically reduced graphene oxide (ErGO) compared to GO. The resultant ErGO electrode showed enhanced capacitance and an ORR onset potential of −0.11 V vs. Ag/AgCl, similar to that of a nitrogen doped reduced graphene oxide (NrGO) electrode produced by a hydrothermal process. However the ErGO exhibited considerably lower electron transfer numbers (2.0–3.3 at a potential range of −0.4 V to −1.0 V) indicating that although both catalysts operate under combined 4e− and 2e− ORR processes, ErGO follows a more predominant 2e− pathway. The ORR process in ErGO has been linked to the presence of quinone functional groups, which favour the 2e− ORR pathway.

Nitrogen/sulfur dual-doped reduced graphene oxide supported CuFeS2 as an efficient electrocatalyst for the oxygen reduction reaction

2018 ◽  
Vol 42 (3) ◽  
pp. 2081-2088 ◽  
Author(s):  
Man Zhang ◽  
Wei Hong ◽  
Ruinan Xue ◽  
Lingzhi Li ◽  
Guanbo Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Low Cost ◽  
Reduction Reaction ◽  
Reduced Graphene

At present, low-cost and efficient electrocatalysts for accelerating the oxygen reduction reaction in fuel cells are highly desired.

Synthesis and Characterization of Nitrogen Doped Reduced Graphene Oxide Based Cobalt-ZIF-8 Catalysts for Oxygen Reduction Reaction

2021 ◽  
Vol MA2021-02 (36) ◽  
pp. 1024-1024
Author(s):  
Hassan Shirzadi Jahromi ◽  
Shivi Saxena ◽  
Sudharsan Sridhar ◽  
Muralidhar K Ghantasala ◽  
Ramakrishna Guda ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Synthesis And Characterization ◽  
Nitrogen Doped ◽  
Reduced Graphene

Synthesis and Characterization of Nitrogen Doped Reduced Graphene Oxide Based Cobalt-ZIF-8 Catalysts for Oxygen Reduction Reaction

2021 ◽  
Vol 104 (8) ◽  
pp. 59-71
Author(s):  
Hassan Shirzadi Jahromi ◽  
Shivi Saxena ◽  
Sudharsan Sridhar ◽  
Muralidhar K Ghantasala ◽  
Ramakrishna Guda ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Synthesis And Characterization ◽  
Nitrogen Doped ◽  
Reduced Graphene
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