Research Article

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2019, 12(7): 1605–1611

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https://doi.org/10.1007/s12274-019-2399-3

In-situ formation of MOF derived mesoporous Co3N/amorphous N-doped carbon nanocubes as an efficient electrocatalytic oxygen evolution reaction

Bong Kyun Kang1,, Seo Young Im2,, Jooyoung Lee2, Sung Hoon Kwag2, Seok Bin Kwon2, SintayehuNibret Tiruneh2, Min-Jun Kim3,Jung Ho Kim4,5, Woo Seok Yang1, Byungkwon Lim2, and Dae Ho Yoon2 (*)

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1 Nano Materials and Components Research Center, Korea Electronics Technology Institute, Seongnam 463-816, Republic of Korea
2 School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
3 Advanced Materials & Processing Center, Institute for Advanced Engineering (IAE), Yongin 175-28, Republic of Korea
4 Australian Institute for Innovative Materials (AIIM), University of Wollongong, Squires Way, North Wollongong, NSW 2500, Australia
5 Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, 17104, Republic of Korea
Present address: Nano Materials and Components Research Center, Korea Electronics Technology Institute, Seongnam 463-816, Republic of Korea, School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea

Keywords: transition-metal nitride, metal organic framework, mesoporous, oxygen evaluation reaction, alkaline water electrolysis
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  • Abstract
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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 Co3N@amorphous N-doped carbon (AN-C) nanocubes (NCs) with well-controlled open-framework structures via monodispersed Co3[Co(CN)6]2 Prussian blue analogue (PBA) NC precursors using in situ nitridation and calcination processes. Co3N@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.
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In-situ formation of MOF derived mesoporous Co3N/amorphous N-doped carbon nanocubes as an efficient electrocatalytic oxygen evolution reaction. Nano Res. 2019, 12(7): 1605–1611 https://doi.org/10.1007/s12274-019-2399-3

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