Well-Dispersed ZIF-Derived Co,N-Co-doped Carbon Nanoframes through Mesoporous-Silica-Protected Calcination as Efficient Oxygen Reduction Electrocatalysts

Lu Shang; Huijun Yu; Xing Huang; Tong Bian; Run Shi; Yufei Zhao; Geoffrey I N Waterhouse; Li-Zhu Wu; Chen-Ho Tung; Tierui Zhang

doi:10.1002/adma.201505045

Well-Dispersed ZIF-Derived Co,N-Co-doped Carbon Nanoframes through Mesoporous-Silica-Protected Calcination as Efficient Oxygen Reduction Electrocatalysts

Adv Mater. 2016 Feb 24;28(8):1668-74. doi: 10.1002/adma.201505045. Epub 2015 Dec 16.

Authors

Affiliations

¹ Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
² College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
³ School of Chemical Sciences, The University of Auckland, Auckland, 1142, New Zealand.

PMID: 26677131
DOI: 10.1002/adma.201505045

Abstract

A well-dispersed Co,N co-doped carbon nanoframework (Co,N-CNF) with hierarchically porous structure is successfully synthesized from zeolitic imidazolate framework (ZIF) precursors via a mesoporous-silica-protected calcination strategy. By preventing the irreversible fusion and aggregation during the high-temperature pyrolysis step with this protection strategy, the Co,N-CNF exhibits comparable oxygen reduction reaction (ORR) catalytic activity to that of commercial Pt catalysts with the same loading.

Keywords: Co,N-co-doped carbon; electrocatalysts; mesoporous silica-protected calcination; oxygen reduction reaction; zeolitic imidazolate frameworks.