Title

In-situ formation of MOF derived mesoporous Co 3 N/amorphous N-doped carbon nanocubes as an efficient electrocatalytic oxygen evolution reaction

RIS ID

135437

Publication Details

Kang, B. Kyun., Im, S. Young., Lee, J., Kwag, S. Hoon., Kwon, S. Bin., Tiruneh, S., Kim, M., Kim, J. Ho., Yang, W. Seok., Lim, B. & Yoon, D. Ho. (2019). In-situ formation of MOF derived mesoporous Co 3 N/amorphous N-doped carbon nanocubes as an efficient electrocatalytic oxygen evolution reaction. Nano Research, 12 (7), 1605-1611.

Abstract

The suitable materials, metal nitrides, are a promising class of electrocatalyst materials for a highly efficient oxygen evolution reaction (OER) because they exhibit superior intrinsic conductivity and have higher sustainability than oxide-based materials. To our knowledge, for the first time, we report a designable synthesis of three-dimensional (3D) and mesoporous Co 3 N@amorphous N-doped carbon (AN-C) nanocubes (NCs) with well-controlled open-framework structures via monodispersed Co 3 [Co(CN) 6 ] 2 Prussian blue analogue (PBA) NC precursors using in situ nitridation and calcination processes. Co 3 N@AN-C NCs (2 h) demonstrate better OER activity with a remarkably low Tafel plot (69.6 mV·dec −1 ), low overpotential of 280 mV at a current density of 10 mA·cm −2 . Additionally, excellent cycling stability in alkaline electrolytes was exhibited without morphological changes and voltage elevations, superior to most reported hierarchical structures of transition-metal nitride particles. The presented strategy for synergy effects of metal-organic frameworks (MOFs)-derived transition-metal nitrides-carbon hybrid nanostructures provides prospects for developing high-performance and advanced electrocatalyst materials. [Figure not available: see fulltext.].

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Link to publisher version (DOI)

http://dx.doi.org/10.1007/s12274-019-2399-3