纳米棒
过电位
塔菲尔方程
析氧
钌
掺杂剂
杂原子
锌
氧化钌
材料科学
兴奋剂
催化作用
化学工程
纳米技术
无机化学
电催化剂
电化学
化学
电极
冶金
有机化学
光电子学
物理化学
工程类
戒指(化学)
作者
Heng Zhang,Bin Wu,Jianwei Su,Kunyu Zhao,Liang Chen
出处
期刊:ChemNanoMat
[Wiley]
日期:2020-12-01
卷期号:7 (2): 117-121
被引量:25
标识
DOI:10.1002/cnma.202000526
摘要
Abstract It is highly desirable but challenging to develop active and stable electrocatalysts for oxygen evolution reaction (OER) in acid media. Heteroatom incorporation is an effective strategy of defect engineering for optimizing the intrinsic electrocatalytic activities. In this research, zinc‐doped ruthenium oxide (Zn‐doped RuO 2 ) nanorods were prepared by using the facile two‐step method. It is found that the OER activity of Zn‐doped RuO 2 catalysts can be readily controlled by varying the amount of Zn dopants. The Zn‐doped RuO 2 catalyst with 6.4 at.% displays the best electrocatalytic activity with a low overpotential of 206 mV at 10 mA cm −2 , a Tafel slope of 49 mV dec −1 and a long‐term chronopotentiometry test at 10 mA cm −2 for 30 h towards OER in 0.5 M H 2 SO 4 solution. The enhanced OER performance may be attributed to the defective structures caused by Zn doping and the ultrasmall size of the RuO 2 nanocrystals.
科研通智能强力驱动
Strongly Powered by AbleSci AI