文献类型：期刊文献

英文题名：Boosting the interfacial hydrogen migration for efficient alkaline hydrogen evolution on Pt-based nanowires

作者：Lai, Wenchuan[1];Yu, Penglin[1];Gao, Lei[1];Yang, Zhilong[1];He, Bingling[2];Huang, Hongwen[1,3]

第一作者：Lai, Wenchuan

通讯作者：Huang, HW[1];He, BL[2];Huang, HW[3]

机构：[1]Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China;[2]Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[3]Hunan Univ, Shenzhen Res Inst, Shenzhen 518055, Guangdong, Peoples R China

第一机构：Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China

通讯机构：[1]corresponding author), Hunan Univ, Coll Mat Sci & Engn, Changsha 410082, Hunan, Peoples R China;[2]corresponding author), Xinxiang Univ, Coll Phys & Elect Engn, Xinxiang 453003, Henan, Peoples R China;[3]corresponding author), Hunan Univ, Shenzhen Res Inst, Shenzhen 518055, Guangdong, Peoples R China.|[110717]新乡学院物理与电子工程学院;[11071]新乡学院;

年份：2022

卷号：10

期号：32

起止页码：16834-16841

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20220128005);Scopus(收录号：2-s2.0-85135585141);WOS:【SCI-EXPANDED(收录号:WOS:000835757000001)】；

基金：This work was supported by the National Key Research and Development Program of China (No. 2021YFA1502000), NSFC (No. U2032149 and 22102052), the Science and Technology Innovation Program of Hunan Province (No. 2021RC3065 and 2021RC2053), Hunan Provincial Natural Science Foundation of China (No. 2020JJ2001), and Shenzhen Science and Technology Program (No. JCYJ20210324120800002).

语种：英文

外文关键词：Binary alloys - Electrocatalysts - Hydrogen - Platinum

摘要：The alkaline hydrogen evolution reaction (HER) on Pt-based catalysts is largely retarded by the insufficient supply of dissociated hydrogen (*H) on Pt sites. Hydrogen spillover offers a promising solution to deliver reactive *H; however, the hydrogen migration process generally suffers from thermodynamic/kinetic obstacles. Herein, we demonstrate that hydrogen spillover on binary PtNi nanowires can be thermodynamically and kinetically boosted by P-doping, resulting in a substantially improved alkaline HER. A combination of experimental and theoretical investigations suggests the dual roles of the incorporated P heteroatoms in facilitating the hydrogen spillover, involving the increased *H coverage by promoting the water dissociation and the accelerated hydrogen migration across the Pt-Ni interface to the Pt sites by lowering the kinetic barrier. Benefiting from the enhanced *H supply on the Pt sites, the P-doped PtNi nanowires exhibit impressive alkaline HER performance (eta(10) = 12 mV, mass activity = 5.8 A mg(Pt)(-1) at 70 mV), outperforming most other state-of-the-art HER electrocatalysts.