Citation:
	            
		            Yangzhi Bai,  Baolian Yi,  Jia Li,  Shangfeng Jiang,  Hongjie Zhang,  Zhigang Shao,  Yujiang Song. A high performance non-noble metal electrocatalyst for the oxygen reduction reaction derived from a metal organic framework[J]. Chinese Journal of Catalysis,
							;2016, 37(7): 1127-1133.
						
							doi:
								10.1016/S1872-2067(15)61104-4
						
					
				
					
				
	        
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	                	The development of a non-precious metal electrocatalyst (NPME) with a performance superior to commercial Pt/C for the oxygen reduction reaction (ORR) is important for the commercialization of fuel cells. We report the synthesis of a NPME by heat-treating Co-based metal organic frameworks (ZIF-67) with a small average size of 44 nm. The electrocatalyst pyrolyzed at 600 ℃ showed the best performance and the performance was enhanced when it was supported on BP 2000. The resulting electrocatalyst was composed of 10 nm Co nanoparticles coated by 3-12 layers of N doped graphite layers which as a whole was embedded in a carbon matrix. The ORR performance of the electrocatalyst was tested by rotating disk electrode tests in O2-saturated 0.1 mol/L KOH under ambient conditions. The electrocatalyst (1.0 mg/cm2) showed an onset potential of 1.017 V (vs. RHE) and a half-wave potential of 0.857 V (vs. RHE), which showed it was as good as the commercial Pt/C (20 μgPt/cm2). Furthermore, the electrocatalyst possessed much better stability and resistance to methanol crossover than Pt/C.
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