Show simple item record

dc.contributor.authorLiu, Yanyan
dc.contributor.authorHan, Miaomiao
dc.contributor.authorXiong, Qizhong
dc.contributor.authorZhang, Shengbo
dc.contributor.authorZhao, Cuijiao
dc.contributor.authorGong, Wanbing
dc.contributor.authorWang, Guozhong
dc.contributor.authorZhang, Haimin
dc.contributor.authorZhao, Huijun
dc.date.accessioned2019-10-04T04:04:53Z
dc.date.available2019-10-04T04:04:53Z
dc.date.issued2019
dc.identifier.issn1614-6832
dc.identifier.doi10.1002/aenm.201803935
dc.identifier.urihttp://hdl.handle.net/10072/388083
dc.description.abstractThe Haber‐Bosch process can be replaced by the ambient electrocatalytic N2 reduction reaction (NRR) to produce NH3 if suitable electrocatalysts can be developed. However, to develop high performance N2 fixation electrocatalysts, a key issue to be resolved is to achieve efficient hydrogenation of N2 without interference by the thermodynamically favored hydrogen evolution reaction (HER). Herein, in‐operando created strong Li–S interactions are reported to empower the S‐rich MoS2 nanosheets with superior NRR catalytic activity and HER suppression ability. The Li+ interactions with S‐edge sites of MoS2 can effectively suppress hydrogen evolution reaction by reducing H* adsorption free energy from 0.03 to 0.47 eV, facilitate N2 adsorption by increasing N2 adsorption free energy from –0.32 to –0.70 eV and enhance electrocatalytic N2 reduction activity by decreasing the activation energy barrier of the reaction control step (*N2 → *N2H) from 0.84 to 0.42 eV. A NH3 yield rate of 43.4 μg h−1 mg−1 MoS2 with a faradaic efficiency (FE) of 9.81% can be achieved in presence of strong Li–S interactions, more than 8 and 18 times by the same electrocatalyst in the absence of Li–S interactions. This report opens a new way to design and develop catalysts and catalysis systems.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherWiley
dc.relation.ispartofissue14
dc.relation.ispartofjournalAdvanced Energy Materials
dc.relation.ispartofvolume9
dc.subject.fieldofresearchMacromolecular and materials chemistry
dc.subject.fieldofresearchMaterials engineering
dc.subject.fieldofresearchcode3403
dc.subject.fieldofresearchcode4016
dc.subject.keywordsScience & Technology
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsTechnology
dc.subject.keywordsChemistry, Physical
dc.subject.keywordsEnergy & Fuels
dc.titleDramatically Enhanced Ambient Ammonia Electrosynthesis Performance by In-Operando Created Li-S Interactions on MoS2 Electrocatalyst
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationLiu, Y; Han, M; Xiong, Q; Zhang, S; Zhao, C; Gong, W; Wang, G; Zhang, H; Zhao, H, Dramatically Enhanced Ambient Ammonia Electrosynthesis Performance by In-Operando Created Li-S Interactions on MoS2 Electrocatalyst, Advanced Energy Materials, 2019, 9 (14)
dc.date.updated2019-10-04T04:00:51Z
gro.hasfulltextNo Full Text
gro.griffith.authorZhao, Huijun


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record