dc.contributor.author | Huang, Z | |
dc.contributor.author | Yang, Z | |
dc.contributor.author | Hussain, Z | |
dc.contributor.author | Chen, B | |
dc.contributor.author | Jia, Q | |
dc.contributor.author | Zhu, Y | |
dc.contributor.author | Xia, Y | |
dc.date.accessioned | 2019-11-21T13:52:40Z | |
dc.date.issued | 2019-11-19 | |
dc.description.abstract | Hydrogen is one of the most promising sustainable energy among numerous new energy resources. Electrocatalytic water splitting for H2 generation is a clean and sustainable approach due to the use of widely existed water as resource. The searching for efficient and low-cost non-precious metal based electrocatalysts for water splitting, including both cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER), still remains a great challenge. In this work we report a simple method that utilizes the one-pot in-situ synthesized POMs@ZIFs (POMs = Polyoxometallates, ZIFs = Zeolitic imidazolate frameworks) as precursor for the production of WS2/Co1-xS/N, S co-doped porous carbon nanocomposite as efficient electrocatalysts. These precursors POMs@ZIFs can effectively prevent the agglomeration of metal compound particles during heat treatment and leads to homogeneous dispersion of metal active sites within carbon matrix. The resulting bimetallic Co–W sulfide/heteroatom doped porous carbon composites show significant improvement in electrocatalytic activity towards both OER (Tafel slop of 53 mV dec−1 with overpotential of 0.365 V @10 mA cm−2 current density in 1 M KOH media) and HER (Tafel slop of 64 mV dec−1 with overpotential of 0.250 V @10 mA cm−2 current density in 0.5 M H2SO4 solution). This work opens up a new way to obtain low cost bifunctional electrocatalysts towards both OER and HER in water splitting. | en_GB |
dc.description.sponsorship | European Commission | en_GB |
dc.description.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
dc.identifier.citation | Published online 19 November 2019, article number 135335 | en_GB |
dc.identifier.doi | 10.1016/j.electacta.2019.135335 | |
dc.identifier.grantnumber | RFCS-2016-754077 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/39677 | |
dc.language.iso | en | en_GB |
dc.publisher | Elsevier | en_GB |
dc.rights.embargoreason | Publisher policy. | en_GB |
dc.subject | Electrocatalyst | en_GB |
dc.subject | Hydrogen evolution reaction | en_GB |
dc.subject | Oxygen evolution reaction | en_GB |
dc.subject | Zeolitic imidazolate frameworks | en_GB |
dc.subject | Polyoxometalate | en_GB |
dc.title | Polyoxometallates@zeolitic-imidazolate-framework derived bimetallic tungsten-cobalt sulfide/porous carbon nanocomposites as efficient bifunctional electrocatalysts for hydrogen and oxygen evolution | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-11-21T13:52:40Z | |
dc.identifier.issn | 0013-4686 | |
exeter.article-number | 135335 | en_GB |
dc.description | This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record. | en_GB |
dc.identifier.journal | Electrochimica Acta | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2019-11-18 | |
exeter.funder | ::European Commission | en_GB |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2019-11-18 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-11-21T13:50:47Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2019-11-21T13:52:45Z | |
refterms.panel | B | en_GB |