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dc.contributor.authorShinagawa, Tatsuya
dc.contributor.authorNg, Marcus Tze-Kiat
dc.contributor.authorTakanabe, Kazuhiro
dc.date.accessioned2017-08-30T11:40:25Z
dc.date.available2017-08-30T11:40:25Z
dc.date.issued2017-09-21
dc.identifier.citationShinagawa T, Ng MT-K, Takanabe K (2017) Electrolyte engineering toward efficient water splitting at mild pH. ChemSusChem. Available: http://dx.doi.org/10.1002/cssc.201701266.
dc.identifier.issn1864-5631
dc.identifier.pmid28846205
dc.identifier.doi10.1002/cssc.201701266
dc.identifier.urihttp://hdl.handle.net/10754/625422
dc.description.abstractThe development of processes for the conversion of H2O/CO2 driven by electricity generated in renewable manners is essential to achieve sustainable energy and chemical cycles, in which the electrocatalytic oxygen evolution reaction (OER) is one of the bottlenecks. In this contribution, the influences of the electrolyte molarity and identity on OER at alkaline to neutral pH were investigated at an appreciable current density of ~10 mA cm-2, revealing (1) the clear boundary of reactant switching between H2O/OH- due to the diffusion limitation of OH- and (2) the substantial contribution of the mass transport of the buffered species in buffered mild pH conditions. These findings propose a strategy of electrolyte engineering: tuning the electrolyte properties to maximize the mass-transport flux. The concept was successfully demonstrated for OER as well as overall water electrolysis in buffered mild pH conditions, shedding light on the development of practical solar fuel production systems.
dc.description.sponsorshipThe research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). Dr. Ahmed Ziani and Liga Stegenburga are acknowledged for the preparation of the CoOx RDE, and the NiMo/NF and Co/NF electrodes, respectively. The authors appreciate the kind assistance of Prof. Nikos Hadjichristidis and Keisuke Obata for the viscosity measurements.
dc.publisherWiley
dc.relation.urlhttp://onlinelibrary.wiley.com/doi/10.1002/cssc.201701266/abstract
dc.rightsThis is the peer reviewed version of the following article: Electrolyte engineering toward efficient water splitting at mild pH, which has been published in final form at http://doi.org/10.1002/cssc.201701266. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
dc.subjectEnergy conversion
dc.subjectOxygen evolution
dc.subjectElectrocatalysis
dc.subjectHeterogeneous Catalysis
dc.subjectElectrolyte Engineering
dc.titleElectrolyte engineering toward efficient water splitting at mild pH
dc.typeArticle
dc.contributor.departmentCatalysis for Energy Conversion (CatEC)
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalChemSusChem
dc.eprint.versionPost-print
kaust.personShinagawa, Tatsuya
kaust.personNg, Marcus Tze-Kiat
kaust.personTakanabe, Kazuhiro
refterms.dateFOA2018-08-28T00:00:00Z
dc.date.published-online2017-09-21
dc.date.published-print2017-11-09


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