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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Preparation and Electrochemical Characterization of Hollow Hexagonal NiCo2S4 Nanoplates as Pseudocapacitor Materials
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Preparation and Electrochemical Characterization of Hollow Hexagonal NiCo2S4 Nanoplates as Pseudocapacitor Materials

机译：空心六方NiCo2S4纳米板作为伪电容器材料的制备及电化学表征

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摘要

In this study, the binary transition metal sulfide NiCo2S4 with a novel hollow hexagonal nanoplate (HHNs) structure has been synthesized through a sacrificial template method based on the Kirkendall effect. The hollow nanoplates have an average diameter of about 200 nm, thickness of about 50 nm, and shell thickness of about 10 nm. The resulting samples were characterized by means of XRD, XPS, EDX, SEM, TEM, and HRTEM. The electrochemical characterization results demonstrate that NiCo2S4 hollow hexagonal nanoplates exhibit a high specific capacitance of 437 F g~(-1) in a 3 M KOH aqueous electrolyte at a current rate of 1 A g~(-1), along with a superior rate capability and Coulombic efficiency stability, indicating their potential application as electrode materials for supercapacitors.
机译：在这项研究中，通过基于柯肯德尔效应的牺牲模板方法合成了具有新型空心六边形纳米板（HHNs）结构的二元过渡金属硫化物NiCo2S4。空心纳米板的平均直径为约200nm，厚度为约50nm，壳厚度为约10nm。通过XRD，XPS，EDX，SEM，TEM和HRTEM对所得样品进行表征。电化学表征结果表明，NiCo2S4空心六边形纳米板在3 M KOH水性电解液中以1 A g〜（-1）的电流速率具有437 F g〜（-1）的高比电容，并且具有更高的速率容量和库仑效率稳定性，表明它们作为超级电容器电极材料的潜在应用。

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