Fabrication of 3D heteroatom-doped porous carbons from self-assembly of chelate foams via a solid state method

Yu Wang, Ying Pan, Liangkui Zhu, Ningning Guo, Runwei Wang, Zongtao Zhang, Shilun Qiu

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A novel 3D foam-like porous carbon architectures with homogeneous N doping and unique mesopore-in-macropore structures have been fabricated from metal-organic complex via a facile template-free solid state method, which show high specific surface area (2732 m2 g-1), large pore volume (3.31 cm3 g-1), interconnected hierarchical pore structures with macro/meso/micro multimodal distribution and abundant surface functionality N doping (5.36 wt%). These characteristics afford high catalytic performance for oxygen reduction with an onset potential of 0.98 V (vs RHE) and a half-wave potential of 0.83 V (vs RHE) in alkaline media, which are comparable with those of the commercial 20 wt% Pt/C catalyst and many state-of-the-art noble-metal-free catalysts. These results demonstrate the significant advantages of the unique mesopore-in-macropore porous structures with efficient heteroatom doping, which provides abundant of accessible active sites for highly mass and charge transports. The present work pave a new facile and environmentally benign synthesis strategy for the preparation of 3D porous carbon architectures as efficient electrochemical energy devices and give deep insights into fabricating advanced nanostructured materials.
Original languageEnglish (US)
Pages (from-to)656-664
Number of pages9
JournalInorganic Chemistry Frontiers
Volume5
Issue number3
DOIs
StatePublished - 2018
Externally publishedYes

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