Superior alkaline hydrogen evolution electrocatalysis enabled by an ultrafine PtNi nanoparticle-decorated Ni nanoarray with ultralow Pt loading

被引：69
|
作者：
Xie, Lisi [1 ]
Liu, Qin [1 ]
Shi, Xifeng [2 ]
Asiri, Abdullah M. [3 ,4 ]
Luo, Yonglan [1 ]
Sun, Xuping [1 ]
机构：
[1] China West Normal Univ, Sch Chem & Chem Engn, Key Lab Sichuan Prov, Chem Synth & Pollut Control, Nanchong 637002, Sichuan, Peoples R China
[2] Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China
[3] King Abdulaziz Univ, Fac Sci, Chem Dept, POB 80203, Jeddah 21589, Saudi Arabia
[4] King Abdulaziz Univ, Ctr Excellence Adv Mat Res, POB 80203, Jeddah 21589, Saudi Arabia
来源：
INORGANIC CHEMISTRY FRONTIERS | 2018年 / 5卷 / 06期
关键词：
NOBLE-METAL CATALYST; ENHANCED ACTIVITY; NANOSHEET ARRAY; WATER OXIDATION; NANOWIRE ARRAY; EFFICIENT; PLATINUM; ALLOY; GRAPHENE; DESIGN;
D O I：
10.1039/c8qi00120k
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The development of efficient hydrogen evolution reaction (HER) catalysts is of great importance for electrolytic hydrogen production in alkaline media. In this communication, we report the development of an ultrafine PtNi nanoparticle-decorated Ni nanosheet array with ultralow Pt loading (7.7 wt%) as a superior electrocatalyst for the alkaline HER. Such a nanoarray drives a geometrical current density of 10 mA cm(-2) at an overpotential as low as 38 mV in 0.1 M KOH, outperforming commercial 20 wt% Pt/C and all reported HER electrocatalysts. Remarkably, it also shows outstanding long-term electrochemical durability with a faradaic efficiency close to 100%. This work provides us with an attractive ultralow-Pt-content catalyst material in water-splitting devices toward high-performance and durable electrochemical production of hydrogen fuels.
引用
收藏
页码：1365 / 1369
页数：5
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