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

Type
Article

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

KAUST Grant Number
CRG-1-2012-LAI-009

Date
2018

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.

Citation
Wang Y, Pan Y, Zhu L, Guo N, Wang R, et al. (2018) Fabrication of 3D heteroatom-doped porous carbons from self-assembly of chelate foams via a solid state method. Inorganic Chemistry Frontiers. Available: http://dx.doi.org/10.1039/c7qi00756f.

Acknowledgements
This work was supported by the National Natural Science Foundation of China (21390394), the National Basic Research Program of China (2012CB821700 and 2011CB808703), NSFC (21261130584 and 91022030), "111" project (B07016), Award Project of KAUST (CRG-1-2012-LAI-009) and Ministry of Education, Science and Technology Development Center Project (20120061130012).

Publisher
Royal Society of Chemistry (RSC)

Journal
Inorganic Chemistry Frontiers

DOI
10.1039/c7qi00756f

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