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首页> 外文期刊>Catalysis science & technology >Controlled growth of porous oxygen-deficient NiCo2O4 nanobelts as high-efficiency electrocatalysts for oxygen evolution reaction
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Controlled growth of porous oxygen-deficient NiCo2O4 nanobelts as high-efficiency electrocatalysts for oxygen evolution reaction

机译：控制增长的多孔缺氧的NiCo2O4纳米作为高效electrocatalysts氧进化的反应

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摘要

Owing to their distinctive chemical properties and cost-effectiveness, transition metal oxides (TMOs) promise intriguing potential in electrocatalysis applications. Herein, porous NiCo2O4 nanobelts with controlled oxygen deficiencies were synthesized based on a facile strategy of hydrothermal growth followed by annealing under an inert atmosphere. By finely adjusting annealing temperature and time, concentrations of oxygen deficiencies within the nanobelts could be modulated. The oxygen-deficient NiCo2O4 nanobelts exhibit superior oxygen evolution reaction (OER) performance at a relatively low overpotential which is superior to the values of prepared pristine NiCo2O4 electrocatalysts. In particular, they show excellent stability for 10 h at 10 mA cm(-2). The enhanced OER activity and stability of the catalyst can be ascribed to the abundant oxygen deficiencies as well as porous architecture of the anisotropic nanobelts. This work paves a promising way in fabricating advanced electrocatalysts.
机译：由于其独特的化学性质和成本效益,过渡金属氧化物(TMOs)承诺有趣的潜力电催化作用的应用程序。NiCo2O4纳米带与控制氧气缺陷是基于一个简单合成的热液战略增长紧随其后一个惰性气氛下退火。调整退火温度和时间,内的氧缺陷浓度纳米带可以调节。缺氧的NiCo2O4纳米展览优越的氧进化反应(OER)表现在一个相对较低的过电压优于准备的价值是什么原始NiCo2O4 electrocatalysts。他们展示优秀的稳定10 h 10马厘米(2)。催化剂可以归因于的丰富氧气不足以及多孔体系结构的各向异性纳米带。工作在制作为一种很有前途的方法先进的electrocatalysts。

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