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|Title:||Polydopamine-derived, in situ N-Doped 3D mesoporous carbons for highly efficient oxygen reduction|
|Citation:||ChemNanoMat, 2018; 4(4):417-422|
|Konggang Qu, Yinghua Wang, Xianxi Zhang, Hongyan Chen, Haibo Li, Baoli Chen, Huawei Zhou, Dacheng Li, Yao Zheng, and Sheng Dai|
|Abstract:||N-doped mesoporous carbons (NMCs) have drawn a lot of interest as alternative electrocatalysts to replace noble metals. The maximized surface areas endow NMCs substantially increased active sites and thus greatly promote the catalytically apparent performance. Herein, polydopamine (PDA) is employed to derive NMCs by a facile hard-templating method. The newly-developed NMC-900 shows highly catalytic efficiency in oxygen reduction reaction (ORR), comparable to that of Pt/C and superb stability greatly surpassing Pt/ C, attributed to its fascinating componential and structural merits. The componential-favored graphitic N and pyridinic N afforded highly efficient and stable metal-free active sites. The structurally large surface area (536 m²/g) and well-aligned 3D mesoporous architecture provided sufficiently exposed active sites and unimpeded reaction channels for ORR. Both the good electrical conductivity and hydrophilic surface of NMC-900 ensured an expedited ORR process.|
|Keywords:||Carbon materials; doping; oxygen reduction; metal-free; polydopamine|
|Description:||Version of record online: March 6, 2018|
|Rights:||© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim|
|Appears in Collections:||Chemical Engineering publications|
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