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Efficient tri-metallic oxides NiCo2O4/CuO for the oxygen evolution reaction

机译：高效的三金属氧化物NicO2O4 / CuO用于氧气进化反应

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In this study, a simple approach was used to produce nonprecious, earth abundant, stable and environmentally friendly NiCo _(2) O _(4) /CuO composites for the oxygen evolution reaction (OER) in alkaline media. The nanocomposites were prepared by a low temperature aqueous chemical growth method. The morphology of the nanostructures was changed from nanowires to porous structures with the addition of CuO. The NiCo _(2) O _(4) /CuO composite was loaded onto a glassy carbon electrode by the drop casting method. The addition of CuO into NiCo _(2) O _(4) led to reduction in the onset potential of the OER. Among the composites, 0.5 grams of CuO anchored with NiCo _(2) O _(4) (sample 2) demonstrated a low onset potential of 1.46 V vs. a reversible hydrogen electrode (RHE). A current density of 10 mA cm ~(?2) was achieved at an over-potential of 230 mV and sample 2 was found to be durable for 35 hours in alkaline media. Electrochemical impedance spectroscopy (EIS) indicated a small charge transfer resistance of 77.46 ohms for sample 2, which further strengthened the OER polarization curves and indicates the favorable OER kinetics. All of the obtained results could encourage the application of sample 2 in water splitting batteries and other energy related applications.
机译：在这项研究中，用于生产碱性介质中的氧气进化反应（OER）的非熟练，地球丰富，稳定，环保的NICO _（2）O _（4）/ CUO复合材料。通过低温含水化学生长方法制备纳米复合材料。通过加入CuO，纳米结构的形态从纳米线改变为多孔结构。通过下降铸造方法将NicO _（2）O _（4）/ CuO复合材料加载到玻璃碳电极上。将CuO加入Nico _（2）O _（4）导致OER的发作潜力的降低。在复合材料中，用Nico _（2）O _（4）（样品2）锚定的0.5克CuO，表现出1.46V与可逆氢电极（RHE）的低发病电位。在230mV的过电位下实现了10 mA cm〜（Δ2）的电流密度，并发现样品2在碱性介质中耐用35小时。电化学阻抗光谱（EIS）表示用于样品2的77.46欧姆的小电荷转移电阻，其进一步加强了Oer极化曲线并表示有利的oer动力学。所有获得的结果都可以鼓励在水分裂电池和其他能量相关应用中施加样品2。

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