In this study, CoOOH/Co(OH)2 and CoOOH/Co(OH)2/graphite nanocomposites were obtained using a one-step microwave method. The morphologies of nanocomposites changed intensively by adding trace graphite, thereby affecting the electrochemical properties. The optimum capacitance of the electrode material can reach 402[Formula: see text]F[Formula: see text]g[Formula: see text] at 2[Formula: see text]A[Formula: see text]g[Formula: see text] and could be increased by 172% (692[Formula: see text]F[Formula: see text]g[Formula: see text] until 2200 cycles when the graphite content is 10[Formula: see text]mg. An excellent cycling stability of 86.2% capacitance retention of the highest value was attained after 10,000 cycles, which is higher than those of the CoOOH/Co(OH)2 electrode. The proposed provides a simple means to improve the electrochemical properties by changing the morphology of electrode material in supercapacitors.

中文翻译：

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微量石墨对CoOOH/Co(OH)2纳米复合材料形貌和电容的影响

在本研究中，CoOOH/Co(OH)2和 CoOOH/Co(OH)2/石墨纳米复合材料是使用一步微波法获得的。通过添加微量石墨，纳米复合材料的形貌发生剧烈变化，从而影响电化学性能。电极材料的最佳电容可以达到402[公式：见文]F[公式：见文]g[公式：见文]在2[公式：见文]A[公式：见文]g[公式：见文] text] 并且可以增加 172% (692[Formula: see text]F[Formula: see text]g[Formula: see text] 直到 2200 个循环，当石墨含量为 10[Formula: see text]mg。循环稳定性 86.2% 的电容保持率在 10,000 次循环后达到最高值，高于 CoOOH/Co(OH)2电极。该提议提供了一种通过改变超级电容器中电极材料的形态来改善电化学性能的简单方法。