In-situ formation of MOF derived mesoporous Co3N/amorphous N-doped carbon nanocubes as an efficient electrocatalytic oxygen evolution reaction
- Authors
- Kang, BK[Kang, Bong Kyun]; Im, SY[Im, Seo Young]; Lee, J[Lee, Jooyoung]; Kwag, SH[Kwag, Sung Hoon]; Kwon, SB[Kwon, Seok Bin]; Tiruneh, S[Tiruneh, SintayehuNibret]; Kim, MJ[Kim, Min-Jun]; Kim, JH[Kim, Jung Ho]; Yang, WS[Yang, Woo Seok]; Lim, B[Lim, Byungkwon]; Yoon, DH[Yoon, Dae Ho]
- Issue Date
- Jul-2019
- Publisher
- TSINGHUA UNIV PRESS
- Keywords
- transition-metal nitride; metal organic framework; mesoporous; oxygen evaluation reaction; alkaline water electrolysis
- Citation
- NANO RESEARCH, v.12, no.7, pp.1605 - 1611
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANO RESEARCH
- Volume
- 12
- Number
- 7
- Start Page
- 1605
- End Page
- 1611
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/9490
- DOI
- 10.1007/s12274-019-2399-3
- ISSN
- 1998-0124
- 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 Co3N@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. 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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Collections - Engineering > School of Advanced Materials Science and Engineering > 1. Journal Articles
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