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Ultrafast synthesis of molybdenum carbide nanoparticles for efficient hydrogen generation

Cv, Cuncai; Huang, Zhipeng; Yang, Qianpeng; Wei, Guangfeng; Chen, Zuofeng; Humphrey, Mark; Zhang, Chi

Description

A facile and ultrafast synthesis of molybdenum carbide coated with few-layer carbon (MoC/C) has been developed, and the effect of reducing the thickness of the carbon coating on its catalytic activity in the hydrogen evolution reaction (HER) has been demonstrated. MoC/C produces a current density of 20 mA cm−2 at an overpotential of 144 mV and a Tafel slope of 63.6 mV dec−1 in 0.5 M H2SO4, and works stably under long-term electrolysis. MoC/C is one of the most active carbide electrocatalysts...[Show more]

dc.contributor.authorCv, Cuncai
dc.contributor.authorHuang, Zhipeng
dc.contributor.authorYang, Qianpeng
dc.contributor.authorWei, Guangfeng
dc.contributor.authorChen, Zuofeng
dc.contributor.authorHumphrey, Mark
dc.contributor.authorZhang, Chi
dc.date.accessioned2021-10-11T00:24:37Z
dc.identifier.issn2050-7496
dc.identifier.urihttp://hdl.handle.net/1885/250601
dc.description.abstractA facile and ultrafast synthesis of molybdenum carbide coated with few-layer carbon (MoC/C) has been developed, and the effect of reducing the thickness of the carbon coating on its catalytic activity in the hydrogen evolution reaction (HER) has been demonstrated. MoC/C produces a current density of 20 mA cm−2 at an overpotential of 144 mV and a Tafel slope of 63.6 mV dec−1 in 0.5 M H2SO4, and works stably under long-term electrolysis. MoC/C is one of the most active carbide electrocatalysts reported thus far, although MoC is not even the most active phase of molybdenum carbide and MoC/C has a small surface area. Complementary density functional theory calculations have afforded insight into this novel catalyst design, showing that increasing the thickness of the carbon layer leads to the composite system losing the characteristics of MoC and behaving more like a carbon surface, and thereby resulting in a reduction in HER activity.
dc.description.sponsorshipThis research was nancially supported by the National Natural Science Foundation of China (51772214, 51432006), the Ministry of Science and Technology of China (2011DFG52970), the Ministry of Education of China (IRT14R23), the 111 Project (B13025), Jiangsu Province (2011-XCL-019 and 2013-479). M. G. H. and C. Z. thank the Australian Research Council for support.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherRSC Publications
dc.rights© The Royal Society of Chemistry 2017
dc.sourceJournal of Materials Chemistry A
dc.titleUltrafast synthesis of molybdenum carbide nanoparticles for efficient hydrogen generation
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume5
dc.date.issued2017
local.identifier.absfor039904 - Organometallic Chemistry
local.identifier.ariespublicationU4217927xPUB894
local.publisher.urlhttp://pubs.rsc.org/
local.type.statusSubmitted Version
local.contributor.affiliationCv, Cuncai, Tongji University
local.contributor.affiliationHuang, Zhipeng, Tongji University
local.contributor.affiliationYang, Qianpeng, Tongji University
local.contributor.affiliationWei, Guangfeng, Tongji University
local.contributor.affiliationChen, Zuofeng, Tongji University
local.contributor.affiliationHumphrey, Mark, College of Science, ANU
local.contributor.affiliationZhang, Chi, Tongji University
local.bibliographicCitation.startpage22805
local.bibliographicCitation.lastpage22812
local.identifier.doi10.1039/c7ta06266d
local.identifier.absseo970103 - Expanding Knowledge in the Chemical Sciences
dc.date.updated2020-11-23T11:24:31Z
local.identifier.scopusID2-s2.0-85033229029
dcterms.accessRightsOpen Access
dc.provenancehttps://v2.sherpa.ac.uk/id/publication/25611..."The Submitted Version can be archived in any Repository" from SHERPA/RoMEO site (as at 14/10/2021).
CollectionsANU Research Publications

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