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    					3D Network nanostructured NiCoP nanosheets supported on N-doped carbon coated Ni foam as a highly active bifunctional electrocatalyst for hydrogen and oxygen evolution reactions  | 
  					 
  					  										
						Miaomiao Tong, Lei Wang( ), Peng Yu, Xu Liu, Honggang Fu( ) | 
					 
															
						| Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, Heilongjiang University, Harbin 150080, China | 
					 
										
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													     		                            						                            																	    Abstract  A highly active bi-functional electrocatalyst towards both hydrogen and oxygen evolution reactions is critical for the water splitting. Herein, a self-supported electrode composed of 3D network nanostructured NiCoP nanosheets grown on N-doped carbon coated Ni foam (NiCoP/NF@NC) has been synthesized by a hydrothermal route and a subsequent phosphorization process. As a bifunctional electrocatalyst, the NiCoP/NF@NC electrode needs overpotentials of 31.8 mV for hydrogen evolution reaction and 308.2 mV for oxygen evolution reaction to achieve the current density of 10 mA·cm−2 in 1 mol·L−1 KOH electrolyte. This is much better than the corresponding monometal catalysts of CoP/NF@NC and NiP/NF@NC owing to the synergistic effect. NiCoP/NF@NC also exhibits low Tafel slope, and excellent long-term stability, which are comparable to the commercial noble catalysts of Pt/C and RuO2. 
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															| Keywords 
																																																				bimetallic phosphides  
																		  																																				N-doped carbon  
																		  																																				self-support  
																		  																																				hydrogen evolution  
																		  																																				oxygen evolution  
																																			  
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																																Corresponding Author(s):
																Lei Wang,Honggang Fu   
																													     		
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																															Just Accepted Date: 09 February 2018  
																																														Online First Date: 19 April 2018   
																																														Issue Date: 18 September 2018
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