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High-Yield Electrochemical Production of Large-Sized and Thinly Layered NiPS3 Flakes for Overall Water Splitting

Li, Xinzhe; Fang, Yiyun; Wang, Jun; Wei, Bin; Qi, Kun; Hoh, Hui Ying; Hao, Qiaoyan; Sun, Tao; Wang, Zhongchang; Yin, Zongyou; Zhang, Yupemg

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Achieving large‐sized and thinly layered 2D metal phosphorus trichalcogenides with high quality and yield has been an urgent quest due to extraordinary physical/chemical characteristics for multiple applications. Nevertheless, current preparation methodologies suffer from uncontrolled thicknesses, uneven morphologies and area distributions, long processing times, and inferior quality. Here, a sonication‐free and fast (in minutes) electrochemical cathodic exfoliation approach is reported that...[Show more]

dc.contributor.authorLi, Xinzhe
dc.contributor.authorFang, Yiyun
dc.contributor.authorWang, Jun
dc.contributor.authorWei, Bin
dc.contributor.authorQi, Kun
dc.contributor.authorHoh, Hui Ying
dc.contributor.authorHao, Qiaoyan
dc.contributor.authorSun, Tao
dc.contributor.authorWang, Zhongchang
dc.contributor.authorYin, Zongyou
dc.contributor.authorZhang, Yupemg
dc.date.accessioned2020-03-12T00:07:35Z
dc.identifier.issn1613-6810
dc.identifier.urihttp://hdl.handle.net/1885/202139
dc.description.abstractAchieving large‐sized and thinly layered 2D metal phosphorus trichalcogenides with high quality and yield has been an urgent quest due to extraordinary physical/chemical characteristics for multiple applications. Nevertheless, current preparation methodologies suffer from uncontrolled thicknesses, uneven morphologies and area distributions, long processing times, and inferior quality. Here, a sonication‐free and fast (in minutes) electrochemical cathodic exfoliation approach is reported that can prepare large‐sized (typically ≈150 µm2) and thinly layered (≈70% monolayer) NiPS3 flakes with high crystallinity and pure phase structure with a yield ≈80%. During the electrochemical exfoliation process, the tetra‐n‐butylammonium salt with a large ionic diameter is decomposed into gaseous species after the intercalation and efficiently expands the tightly stratified bulk NiPS3 crystals, as revealed by in situ and ex situ characterizations. Atomically thin NiPS3 flakes can be obtained by slight manual shaking rather than sonication, which largely preserves in‐plane structural integrity with large size and minimum damage. The obtained high quality NiPS3 offers a new and ideal model for overall water splitting due to its inherent fully exposed S and P atoms that are often the active sites for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Consequently, the bifunctional NiPS3 exhibits outstanding performance for overall water splitting.
dc.description.sponsorshipThe authors acknowledge the support from the National Natural Science Foundation of China (Nos. 61875139, 91433107, 51502174, 91645102, and 51702219), Research Foundation of China Postdoctoral Science (2018M630976), the National Key Research & Development Program (No. 2016YFA0201900), Guangdong Special Support Program, Shenzhen Peacock Plan (Grant Nos. 827-000113, KQJSCX20170727100802505, and KQTD2016053112042971), the Educational Commission of Guangdong Province (2016KTSCX126), Shenzhen Nanshan District Pilotage Team Program (LHTD20170006), Science and Technology Project of Shenzhen (ZDSYS201707271014468), and Australian Research Council (ARC, FT150100450, IH150100006, and CE170100039).
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherWiley
dc.rights© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
dc.sourceSmall
dc.titleHigh-Yield Electrochemical Production of Large-Sized and Thinly Layered NiPS3 Flakes for Overall Water Splitting
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume15
dc.date.issued2019
local.identifier.absfor030601 - Catalysis and Mechanisms of Reactions
local.identifier.ariespublicationu3102795xPUB4154
local.publisher.urlhttps://www.wiley.com/en-gb
local.type.statusAccepted Version
local.contributor.affiliationLi, Xinzhe, Shenzhen University
local.contributor.affiliationFang, Yiyun, Shenzhen University
local.contributor.affiliationWang, Jun, International Iberian Nanotechnology Laboratory (INL)
local.contributor.affiliationWei, Bin, International Iberian Nanotechnology Laboratory (INL)
local.contributor.affiliationQi, Kun, Shenzhen University
local.contributor.affiliationHoh, Hui Ying, Shenzhen University
local.contributor.affiliationHao, Qiaoyan, Shenzhen University
local.contributor.affiliationSun, Tao, National University of Singapore
local.contributor.affiliationWang, Zhongchang, International Iberian Nanotechnology Laboratory (INL)
local.contributor.affiliationYin, Zongyou, College of Science, ANU
local.contributor.affiliationZhang, Yupemg, Shenzhen University
dc.relationhttp://purl.org/au-research/grants/arc/FT150100450
dc.relationhttp://purl.org/au-research/grants/arc/IH150100006
dc.relationhttp://purl.org/au-research/grants/arc/CE170100039
local.bibliographicCitation.issue30
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage10
local.identifier.doi10.1002/smll.201902427
local.identifier.absseo850499 - Energy Transformation not elsewhere classified
dc.date.updated2019-11-25T07:40:40Z
local.identifier.scopusID2-s2.0-85067405938
dcterms.accessRightsOpen Access
dc.provenancehttp://sherpa.ac.uk/romeo/issn/1613-6810/..."author can archive post-print (ie final draft post-refereeing). 12 months embargo" from SHERPA/RoMEO site (as at 18/03/2020). This is the peer reviewed version of the following article: [Li, Xinzhe, et al. "High‐Yield Electrochemical Production of Large‐Sized and Thinly Layered NiPS3 Flakes for Overall Water Splitting." Small 15.30 (2019): 1902427.], which has been published in final form at [https://dx.doi.org/10.1002/smll.201902427]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions
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