Figshare最新文献

筛选

英文中文

Metal–OrganicnFramework-Derived Nickel–Cobalt Sulfide on Ultrathin MxenenNanosheets for Electrocatalytic Oxygen Evolution 金属-有机框架衍生的超薄Mxene纳米片上的镍钴硫化物电催化析氧

Figshare Pub Date : 2018-06-21 DOI: 10.1021/acsami.8b06272.s001

Haiyuan Zou (5428199), Bowen He (5434409), Panyong Kuang (4376968), Jiaguo Yu (1400335), Ke Fan (1563784)

{"title":"Metal–OrganicnFramework-Derived Nickel–Cobalt Sulfide on Ultrathin MxenenNanosheets for Electrocatalytic Oxygen Evolution","authors":"Haiyuan Zou (5428199), Bowen He (5434409), Panyong Kuang (4376968), Jiaguo Yu (1400335), Ke Fan (1563784)","doi":"10.1021/acsami.8b06272.s001","DOIUrl":"https://doi.org/10.1021/acsami.8b06272.s001","url":null,"abstract":"Water oxidation isnthe key process for many sustainable energy technologies containingnartificial photosynthesis and metal–air batteries. Engineeringninexpensive yet active electrocatalysts for water oxidation is mandatorynfor the cost-effective generation of solar fuels. Herein, we proposena novel hierarchical porous Ni–Co-mixed metal sulfide (denotednas NiCoS) on Ti3C2Tx MXene via a metal–organic framework (MOF)-based approach.nBenefiting from the unique structure and strong interfacial interactionnbetween NiCoS and Ti3C2Tx sheets, the hybrid guarantees an enhanced active surface areanwith prominent charge-transfer conductivity and thus a superior activityntoward oxygen evolution reactions (OERs). Impressively, the hierarchicalnNiCoS in the hybrid is converted to nickel/cobalt oxyhydroxide–NiCoSnassembly (denoted as NiCoOOH–NiCoS) by OER measurement, wherenNiCoOOH on the surface is confirmed as the intrinsic active speciesnfor the consequent water oxidation. The hybrid material is furthernapplied to an air cathode for a rechargeable zinc–air battery,nwhich exhibits low charging/discharging overpotential and long-termnstability. Our work underscores the tuned structure and electrocatalyticnOER performance of MOF derivatives by the versatility of MXenes andnprovides insight into the structure–activity relationship fornnoble metal-free catalysts.","PeriodicalId":522889,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0