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dc.contributor.authorLi, Hui
dc.contributor.authorZhao, Xiaoliang
dc.contributor.authorLiu, Hongli
dc.contributor.authorChen, Shuai
dc.contributor.authorYang, Xianfeng
dc.contributor.authorLv, Chunxiao
dc.contributor.authorZhang, Huawei
dc.contributor.authorShe, Xilin
dc.contributor.authorYang, Dongjiang
dc.date.accessioned2019-07-04T12:41:39Z
dc.date.available2019-07-04T12:41:39Z
dc.date.issued2018
dc.identifier.issn1613-6810
dc.identifier.doi10.1002/smll.201802824
dc.identifier.urihttp://hdl.handle.net/10072/382075
dc.description.abstractTransition metal phosphides (TMPs) are certified high performance electrocatalysts for the hydrogen evolution reaction (HER). The ultrathin 2D structure of TMPs can offer abundant adsorption sites to boost HER performance. Herein, an ice‐templating strategy is developed to prepare CoP aerogels composed of 2D ultrathin CoP nanosheets (<1.5 nm) using sustainable alginate biomass (seaweed extract) as the precursor. The highly porous aerogel structure can not only deliver facile mass transfer, but also prevent aggregation of the nanosheets into layered structures. As expected, the obtained CoP nanosheet aerogels exhibit remarkable stability and excellent electrocatalytic HER performance at all pH values. For instance, the sample CoP‐400 presents a low overpotential of 113, 154, and 161 mV versus RHE at a current density of 10 mA cm−2 in 0.5 m H2SO4, 1 m KOH, and 1 m phosphate buffer solution, respectively. In addition, CoP‐400 displays low Tafel slopes at all pH values due to the interconnected highly porous structure of the aerogel, indicating that the sample can provide low‐resistance channels for mass transport. Density functional theory calculations reveal that P‐top and Co bridge on (011) facet of CoP are more favorable sites during the process of HER in acid and alkaline solutions, respectively.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherJohn Wiley & Sons
dc.publisher.placeGermany
dc.relation.ispartofchapter1802824
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto9
dc.relation.ispartofissue41
dc.relation.ispartofjournalSmall
dc.relation.ispartofvolume14
dc.subject.fieldofresearchEnvironmental Sciences not elsewhere classified
dc.subject.fieldofresearchcode059999
dc.subject.keywordsAll pH values
dc.subject.keywordsDFT calculations
dc.subject.keywordsHydrogen evolution reaction
dc.subject.keywordsIce‐templating
dc.subject.keywordsUltrathin CoP nanosheet aerogel
dc.titleSub-1.5 nm Ultrathin CoP Nanosheet Aerogel: Efficient Electrocatalyst for Hydrogen Evolution Reaction at All pH Values
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorYang, Dongjiang
gro.griffith.authorLi, Hui


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