Nitrogen-rich mesoporous carbon derived from melamine with high electrocatalytic performance for oxygen reduction reaction
Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education of China, Northwest Normal University, 967 Anning East Road, Lanzhou, Gansu 730070, China; Department of Chemical Engineering, Huizhou University, Huizhou, Guangdong 516007, China; College of Life Science, Northwest Normal University, Lanzhou 730070, China; South African Institute for Advanced Materials Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, Cape Town, South Africa
Melamine-derived N-doped mesoporous carbon (MNMC) is synthesized by the pyrolysis of lysine and melamineunder at nitrogen atmosphere using ferric chloride as a dopant and SiO2 nanoparticles as hard templates to form mesoporous architecture. The N content in the bulk of carbon materials is as high as 11.3% and ca. 40.6% of N is in the form of pyridinic-N. The surface area of MNMC is ca. 650 m2 g-1 with a pore size distribution in the range of 2.2-34.5 nm. Compared to commercial Pt/C (20 wt%), MNMC exhibits much better electrocatalytic activity, better durability, and higher methanol tolerance for oxygen reduction reaction (ORR) in alkaline medium. Particularly, the onset ORR potential and half-wave ORR potential of MNMC are 1.059 and 0.871 V vs. RHE respectively, which are higher than those of commercial Pt/C. © 2014 Elsevier B.V. All rights reserved.
Amino acids; Chlorination; Chlorine compounds; Electrocatalysts; Electrolytic reduction; Mesoporous materials; Nitrogen; Platinum alloys; Synthesis (chemical); Electrocatalytic activity; Electrocatalytic performance; Mesopore; Mesoporous carbon; Methanol tolerance; N-doped mesoporous carbons; Nitrogen atmospheres; Oxygen reduction reaction; Carbon
21163018, NSFC, National Natural Science Foundation of China; 21363022, NSFC, National Natural Science Foundation of China; 51362027, NSFC, National Natural Science Foundation of China