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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >A trimetallic V-Co-Fe oxide nanoparticle as an efficient and stable electrocatalyst for oxygen evolution reaction
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A trimetallic V-Co-Fe oxide nanoparticle as an efficient and stable electrocatalyst for oxygen evolution reaction

机译：三金属V-Co-Fe氧化物纳米颗粒作为氧释放反应的有效和稳定的电催化剂

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摘要

Hydrogen (H-2) generated from water splitting is deemed as the ideal replacement for conventional sources of energy. Catalysts play a valuable role in water splitting, especially the oxygen evolution reaction (OER). Here, we report a Fe-doped Co3V2O8 nanoparticle catalyst (iron-rich V-Co-Fe), which possesses outstanding OER catalytic activity with eta(j) = 10 mA cm(-2) = 307 mV, and a low Tafel slope of 36 mV dec(-1), benefiting from a large degree of amorphization, a rich porous structure and a high specific surface area (about 232.1 m(2) g (-1)). More remarkably, the catalytic performance of the V-Co-Fe catalyst is markedly superior to commercial ruthenium oxide. In addition, the durability of the V-Co-Fe catalyst is fine. The current density collapses by less than 3 percent at 1.55 V vs. RHE after 11 h in comparison to the initial value. Moreover, this work reveals that the V-Co-Fe catalyst displays an excellent performance in both OER catalytic activity and stability, and may have the potential to be the ideal substitute for noble metal-based catalysts for water splitting to obtain affordable clean energy.
机译：水分解产生的氢（H-2）被认为是常规能源的理想替代品。催化剂在水分解中起重要作用，尤其是氧气释放反应（OER）。在这里，我们报告了一种Fe掺杂的Co3V2O8纳米颗粒催化剂（富铁的V-Co-Fe），它具有出色的OER催化活性，eta（j）= 10 mA cm（-2）= 307 mV，并且塔菲尔斜率低36 mV dec（-1）的面积，得益于高度的非晶化程度，丰富的多孔结构和高的比表面积（约232.1 m（2）g（-1））。更显着地，V-Co-Fe催化剂的催化性能明显优于市售氧化钌。另外，V-Co-Fe催化剂的耐久性优良。与初始值相比，在11小时后的1.55 V vs. RHE下，电流密度下降不到3％。此外，这项工作表明，V-Co-Fe催化剂在OER催化活性和稳定性方面均表现出优异的性能，并且可能有可能成为贵金属基催化剂的理想替代品，用于水分解以获得可负担的清洁能源。

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