BackgroundResearchers are keen to reduce the over potential value through fabrication of electrocatalyst consisted of environmentally benign and inexpensive material. Supercapacitors on the other hand have gained immense attention in recent years as an energy storage device due to the high power density potential of these devices as compared to conventional batteries based storage system.AimThe research aims to synthesize nanoscale transition metal oxides (TMO) through green route. TMO based nanomaterials have vast role in energy related applications.Materials & methodsIn this study, organic compounds of A. Viridis were used as reducing and stabilizing agents in the synthesis of binary nanocomposite Sb2O3–ZrO2. The synthesized nanocomposite was characterized using x‐ray diffraction, Fourier transform infrared spectroscopy, ultraviolet–visible spectroscopy, field emission scanning electron microscopy and energy dispersive spectroscopy. The electrode material was analyzed for supercapacitor potential using cyclic voltammetry and galvanostatic charge discharge techniques. HER and OER studies were also conducted using electrochemical impedance spectroscopy and linear sweep voltammetry. The synthesized material was also tested for stability.Results & discussionThe crystal size was 15.9 nm. Optical band gap of 2.55 eV was obtained through Tauc plot. The capacitance value of 339.8 F/g at 2 mV/s and the specific capacitance of 100.6 F/g was obtained at 1 A/g. The overpotential value of 201 mV and Tafel value of 121 mV/dec was recorded for the HER, whereas the lower Tafel value of 106 mV/dec and over potential value of 383 mV was determined for OER. Electrode showed promising stability up to various cycles in case of both applications.ConclusionThe obtained results revealed the promising performance with excellent stability of fabricated electrode for super capacitor as well as water splitting studies.

中文翻译：

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探索协同作用：绿色合成、综合表征以及揭示植物介导的 Sb2O3-ZrO2 纳米复合材料的能量产生和存储能力

背景研究人员热衷于通过制造由环境友好且廉价的材料组成的电催化剂来降低过高的电势值。另一方面，超级电容器作为一种能量存储设备近年来受到了极大的关注，因为与传统的基于电池的存储系统相比，这些设备具有高功率密度潜力。 目的该研究旨在通过绿色合成纳米级过渡金属氧化物（TMO）路线。 TMO基纳米材料在能源相关应用中发挥着巨大作用。材料与方法在这项研究中，A. Viridis的有机化合物被用作二元纳米复合材料Sb合成中的还原剂和稳定剂2氧3–氧化锆2。使用X射线衍射、傅里叶变换红外光谱、紫外-可见光谱、场发射扫描电子显微镜和能量色散光谱对合成的纳米复合材料进行了表征。使用循环伏安法和恒电流充电放电技术分析电极材料的超级电容器电势。还使用电化学阻抗谱和线性扫描伏安法进行了 HER 和 OER 研究。还测试了合成材料的稳定性。结果与讨论晶体尺寸为15.9 nm。通过Tauc图得到2.55 eV的光学带隙。在2mV/s下获得339.8F/g的电容值，在1A/g下获得100.6F/g的比电容。 HER 记录了 201 mV 的过电势值和 121 mV/dec 的 Tafel 值，而 OER 则确定了 106 mV/dec 的较低 Tafel 值和 383 mV 的过电势值。在这两种应用中，电极在不同的循环中都表现出良好的稳定性。结论所获得的结果表明，用于超级电容器以及水分解研究的制造电极具有优异的稳定性，具有良好的性能。