Abstract—

Iron and cobalt hexacyanoferrates and their analogs (MHCF) have been synthesized as nanomaterials for the fabrication of C/MHCF composite electrodes. We have studied the structural characteristics and elemental composition of the synthesized compounds by X-ray diffraction and energy dispersive X-ray microanalysis using a VEGA II LMU scanning electron microscope equipped with an INCA Energy 450/XT X-ray microanalysis system (X-Act DDD detector). The results demonstrate that the composite electrodes containing 20% MHCF have a better electrochemical performance than does a carbon electrode. The incorporation of sodium into the structure of iron and cobalt hexacyanoferrates ensures the smallest decrease in the specific capacitance of the composite electrodes at high charge–discharge rates and reduces the charge transport resistance.

中文翻译：

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Fe 4 [Fe（CN）6] 3，K 2 Co [Fe（CN）6]纳米颗粒修饰的碳电极的电化学性质及其含钠类似物

摘要—

六氰合铁酸钴和钴及其类似物（MHCF）已被合成为用于C / MHCF复合电极制造的纳米材料。我们使用配备INCA Energy 450 / XT X射线微分析系统的VEGA II LMU扫描电子显微镜通过X射线衍射和能量色散X射线微分析研究了合成化合物的结构特征和元素组成（X-Act DDD检测器）。结果表明，含有20％MHCF的复合电极比碳电极具有更好的电化学性能。将钠掺入铁和六氰合铁酸钴的结构中，可以确保在高充放电速率下复合电极的比电容的最小降低，并降低了电荷传输阻力。