Co/CoO Nanoparticles/Ag Nanowires/Nitrogen Codoped Electrospun Carbon Nanofibers as Efficient Electrocatalysts for Oxygen Reduction

Development of efficient electrocatalysts for oxygen reduction reaction (ORR) is of crucial importance to optimize the performance of fuel cells. In this work, Firstly, Ag nanowires (AgNWs) were in-situ embedded in electrospun carbon nanofibers (CNF). Then, Nitrogen and Co/CoO nanoparticles (Co/CoO...

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Published inInternational journal of electrochemical science Vol. 11; no. 11; pp. 8994 - 9006
Main Authors Pei, Supeng, Zhou, Zongshang, Chen, Xiaohong, Huang, Xiongjie, Liu, Tong, Cao, Boyu, Wang, Fei
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.2016
Subjects
Ag nanowires
carbon nanofibers
Co/CoO nanoparticles
nitrogen-doping
oxygen reduction reaction
Co/CoO nanoparticles
Ag nanowires
oxygen reduction reaction
carbon nanofibers
nitrogen-doping
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Summary:Development of efficient electrocatalysts for oxygen reduction reaction (ORR) is of crucial importance to optimize the performance of fuel cells. In this work, Firstly, Ag nanowires (AgNWs) were in-situ embedded in electrospun carbon nanofibers (CNF). Then, Nitrogen and Co/CoO nanoparticles (Co/CoO NPs) were successively codoped into CNF-AgNWs via the thermal annealing process, aiming to increase the accessible surface area of CNF-AgNWs and facilitate O2 diffusion and OH- transport of the resulting N-CNF-AgNWs-Co/CoO hybrids. It is demonstrated that N-CNF-AgNWs-Co/CoO exhibited excellent electrocatalytic activity for the ORR in alkaline electrolytes, including high onset potential (-0.069 V), high half-wave potential (-0.246 V), and large electron transfer number (~4).
ISSN:1452-3981
1452-3981
DOI:10.20964/2016.11.52