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Ni/NiFe2O4 Nanorods Encapsulated in Onion-like N-Doped Carbon Nanolayers as Efficient Oxygen Evolution Electrocatalyst
Author NameAffiliationE-mail
LIU Guang Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China  
YAO Rui Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China  
ZHAO Yong Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China  
WANG Mu-Heng Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China  
LI Na Li Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China  
Jin-Ping Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Research Institute of Special Chemicals, Taiyuan University of Technology, Taiyuan 030024, China jpli211@hotmail.com 
Abstract: Ni/NiFe2O4 nanorods encapsulated in onion-like N-doped carbon (ONC) nanolayers was prepared by the pyrolysis of NiFe-based coordination polymer precursor under N2 atmosphere. Compared with Ni@ONC, NiFe2O4, and commercial RuO2 electrocatalysts, benefiting by the promoted electronic conductivity and enlarged electrochemical surface area (0.149 mF) from synergistic effects between the ONC nanolayers and encapsulated Ni/NiFe2O4 heterostructure, the as-prepared Ni/NiFe2O4@ONC hybrid nanorod exhibits extraordinary electrocatalytic activity towards oxygen evolution reaction (OER) with an overpotential of~299 mV at 10 mA·cm-2 and a Tafel slope of 73 mV·dec-1.
Keywords: water splitting  oxygen evolution catalysts  N-doped onion-like carbon  nickel-iron oxides  mesoporous heterostructure
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LIU Guang,YAO Rui,ZHAO Yong,WANG Mu-Heng,LI Na Li,Jin-Ping.Ni/NiFe2O4 Nanorods Encapsulated in Onion-like N-Doped Carbon Nanolayers as Efficient Oxygen Evolution Electrocatalyst[J].Chinese Journal of Inorganic Chemistry,2018,34(8):1494-1500.
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Chinese Journal of Inorganic Chemistry