一种具有超精细铂钴合金修饰的钴纳米线阵列，对碱性析氢具有优异的活性。

An ultrafine platinum-cobalt alloy decorated cobalt nanowire array with superb activity toward alkaline hydrogen evolution.

机构信息

Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu 610054, China.

出版信息

Nanoscale. 2018 Jul 9;10(26):12302-12307. doi: 10.1039/c8nr02071j.

DOI:10.1039/c8nr02071j

PMID:29932199

Abstract

It is highly desired to design and develop highly efficient electrocatalysts for alkaline hydrogen evolution reactions. Herein, we report the development of ultrafine PtCo alloy nanoparticle decorated one-dimensional Co nanowires grown on Ti mesh (PtCo-Co/TiM). Owing to its favorable composition and structure, the PtCo-Co/TiM can deliver an ultrahigh current density of 46.5 mA cm-2 at an overpotential of 70 mV in 1.0 M KOH, superior to recently reported Pt-based electrocatalysts. This catalyst also provides excellent long-term electrochemical durability with its catalytic activity being maintained for at least 50 h.

摘要

人们非常希望设计和开发用于碱性析氢反应的高效电催化剂。在此，我们报告了在 Ti 网上生长的一维 Co 纳米线负载超细 PtCo 合金纳米粒子（PtCo-Co/TiM）的开发。由于其有利的组成和结构，PtCo-Co/TiM 在 1.0 M KOH 中仅需 70 mV 的过电势即可提供 46.5 mA cm-2 的超高电流密度，优于最近报道的基于 Pt 的电催化剂。该催化剂还具有出色的长期电化学耐久性，其催化活性至少可保持 50 h。