Dutta, Soumen ORCID: 0000-0003-1465-2723, Han, HyukSu, Je, Minyeong, Choi, Heechae ORCID: 0000-0002-9390-6607, Kwon, Jiseok, Park, Keemin, Indra, Arindam, Kim, Kang Min, Paik, Ungyu and Song, Taeseup (2020). Chemical and structural engineering of transition metal boride towards excellent and sustainable hydrogen evolution reaction. Nano Energy, 67. AMSTERDAM: ELSEVIER. ISSN 2211-3282
Full text not available from this repository.Abstract
Herein, holey, thin, conductive nickel substituted cobalt molybdenum boride (Ni-CMB) nanosheets have been designed to obtain superior electrochemical HER performance with small overpotential of 69 mV at 10 mA cm(-2) current density and lower Tafel slope of 76.3 mV dec(-1) in alkaline medium. Incorporation of Ni leads to improved conductivity and favorable hydrogen adsorption on Mo sites, which collectively yield efficient electrocatalytic H-2 production from Ni-CMB catalyst. The ultrathin nature (thickness = 5.0 nm) of the designed material expectedly helps to attain high exposure of active sites and facile charge transportation through the nanosheets. Additionally, the decorated mesopores (average size = 3.86 nm) on nanosheets have benefitted towards faster electrolyte diffusion, easy gas escape from catalyst surface to support high electrocatalytic performance. Finally, well-maintained morphology of the sample and evolution of HER active sites in the material have guaranteed long-term, sustainable hydrogen production even at high current densities, which clearly demonstrate its superiority over an expensive electrolyzer (Pt-C) in alkaline water.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||||||
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URN: | urn:nbn:de:hbz:38-352467 | ||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1016/j.nanoen.2019.104245 | ||||||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Nano Energy | ||||||||||||||||||||||||||||||||||||||||||||
Volume: | 67 | ||||||||||||||||||||||||||||||||||||||||||||
Date: | 2020 | ||||||||||||||||||||||||||||||||||||||||||||
Publisher: | ELSEVIER | ||||||||||||||||||||||||||||||||||||||||||||
Place of Publication: | AMSTERDAM | ||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 2211-3282 | ||||||||||||||||||||||||||||||||||||||||||||
Language: | English | ||||||||||||||||||||||||||||||||||||||||||||
Faculty: | Unspecified | ||||||||||||||||||||||||||||||||||||||||||||
Divisions: | Unspecified | ||||||||||||||||||||||||||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||||||||||||||||||||||||||
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URI: | http://kups.ub.uni-koeln.de/id/eprint/35246 |
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