过电位
析氧
催化作用
二硫化钨
兴奋剂
材料科学
塔菲尔方程
掺杂剂
纳米花
化学工程
贵金属
电化学
无机化学
化学
金属
纳米技术
纳米结构
冶金
光电子学
电极
物理化学
工程类
生物化学
作者
M. Alahmadi,Sami Ben Aoun
标识
DOI:10.1016/j.jscs.2024.101845
摘要
Recently, tungsten disulfide (WS2) has received considerable attention in aspects of electrocatalytic oxygen evolution reactions (OER). However, due to the restricted number of active sites, WS2 nanoflower has a high overpotential in OER. Thus, we provide herein a doping approach for doping WS2 nanoflower with non-noble aluminum (Al) metal to increase active sites in an effort to enhance the OER activity of WS2. The positive electrocatalytic effect of Al-doping on WS2 material results in a lower OER operating overpotential. In comparison to undoped WS2, the skeleton-like structure (0.04 %) Al-doped WS2 nanoflowers significantly enhanced OER catalytic activity with an overpotential of 650 mV at the current density of 6 mA cm−2. Furthermore, the impact of different mass loadings of (0.04 %) Al-WS2 on the OER performance has been examined using electrochemical analysis. The success of using aluminum dopants to improve OER performance would have a significant impact on the development and production of non-noble metal sulfide-based electrocatalysts for OER.
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