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首页> 外文期刊>ChemElectroChem >Facile and Controllable One-Pot Synthesis of Hierarchical Co9S8 Hollow Microspheres as High-Performance Electroactive Materials for Energy Storage and Conversion
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Facile and Controllable One-Pot Synthesis of Hierarchical Co9S8 Hollow Microspheres as High-Performance Electroactive Materials for Energy Storage and Conversion

机译：适用于分层CO9S8中空微球的舒适性和可控的单罐合成作为能量储存和转换的高性能电活性材料

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Hierarchical Co9S8 hollow microspheres with nanosheet building units are synthesized via a one-step hydrothermal method. The presence of glucose in the synthesis is essential to the formation of the hollow structure and influences the size and morphology of the microspheres. Benefiting from the advantages of a hollow architecture, a conductive carbon coating and Co9S8 nanosheet units, the composite exhibits outstanding electrochemical properties. When the composite electrode is evaluated as the cathode material for supercapacitors, it exhibits a high specific capacitance of 514 Fg(-1) at 1.0 Ag-1 and a capacitance retention of circa 88% over 1000 cycles at 8 Ag-1. On the other hand, the nanosheet-constructed hollow structure can efficiently promote the electrocatalytic activity of Co9S8 toward the oxygen evolution reaction. Due to the fact that Co9S8 nanosheets impart largely exposed active sites, the composite exhibits a low Tafel slope of 66 mV dec(-1) and no obvious degradation after 12 h water oxidation.
机译：分层CO9S8中空微球通过一步水热法合成了纳米片构建单元。合成中葡萄糖的存在对于中空结构的形成是必不可少的，并影响微球的尺寸和形态。受益于中空架构的优点，导电碳涂层和CO9S8纳米片单元，复合材料表现出出色的电化学性质。当复合电极被评价为超级电容器的阴极材料时，它在1.0Ag-1处表现出514FG（-1）的高比电容，并且在8〜Ag-1下的电容保持在88％超过1000次循环。另一方面，纳米片构造的中空结构可以有效地促进CO9S8的电催化活性朝向氧气进化反应。由于CO9S8纳米片赋予很大曝光的活性位点，复合材料表现出66mV DEC（-1）的低TAFEL斜率，并且在12小时水氧化后没有明显的降解。

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