Pt immobilized spontaneously on porous MXene/MAX hybrid monolith for hydrogen evolution reaction

查看全文 作　　者：Cong [1,2]Cui;Renfei [1,2]Cheng;Chao [1]Zhang;Xiaohui [1]Wang

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;[2]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China

出　　处：《Chinese Chemical Letters》索引2020年第31卷第4期,共4页

基　　金：supported by the Youth Innovation Promotion Association,Chinese Academy of Sciences(CAS)(No.2011152);Shenyang National Laboratory for Materials Science,Institute of Metal Research,CAS;by Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund(the second phase)(No.U1501501)。 摘　　要：Designing efficient electrocatalysts with low Pt loadings for hydrogen evolution reaction(HER)is urgently required for renewable and sustainable energy conversion.Here,we report a strategy that Pt nanoparticulates are spontaneously immobilized on porous MXene/MAX monolith as HER catalysts by utilizing the redox reaction between Ti3C2Tx MXene and[PtCl4]2 in H2 PtCl6 aqueous solution.By taking advantage of homogeneously distributed Pt nanoparticulates on highly electrically conductive porous Ti3C2Tx/Ti3AlC2 monolith,the as-prepared electrocatalysts show high catalytic performance for hydrogen evolution.Specifically,the binder-free electrocatalysts have Pt loadings as low as 8.9μg/cm^2,with low overpotential of 43 mV at a curre nt density of 10 mA/cm^2 and low Tafel slope that three times lower than porous Ti3C2Tx/Ti3AlC2 without Pt loading.This strategy offers a new approach to constructing ultra-low Pt-loading HER catalysts on the basis of in situ redox reaction between noble metal ions and MXenes. 关键词：Clean energy Hydrogen evolution reaction Pt catalyst MXene Porous MAX phase

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Pt immobilized spontaneously on porous MXene/MAX hybrid monolith for hydrogen evolution reaction

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