【摘要】 采用一步水热法在泡沫镍上合成镍钴层状双金属氢氧化物（NiCo-LDH）电极材料，用扫描电镜分析电极材料的微观形貌，X射线衍射仪分析电极材料的物相，并在不同扫描速率以及不同电流密度下NiCo-LDH纳米材料进行了电化学性能测试。结果表明：随着尿素含量的增加，NiCo-LDH的形貌由六角片状、草丛状，最后形成片层上带有针状形貌。扫描速率为10m V·s^-1时，在CV曲线中可以清晰地看到氧化还原峰。电极在0.30～0.35 V之间的充放电曲线出现对称的充放电平台，说明其充放电容量和充放电时间均较优，该复合材料的电容性能良好。更多还原

【Abstract】 Nickel-cobalt layered bimetal hydroxide（NiCo-LDH） electrodes were synthesized on foamed nickel by one-step hydrothermal method. The morphology of the electrodes was analyzed by scanning electron microscopy, and the phase of the electrodes was analyzed by X-ray diffraction. The electrochemical properties of the NiCo-LDH nanomaterials were tested at different scanning rates and current densities. The results showed that with the increase of urea content, the morphology of NiCo-LDH changed from hexagonal lamellae to grassy tufts, and finally to needle-like lamellae. The redox peak was clearly seen in the CV curve at a scanning rate of 10 mV.s^-1. The symmetrical charging and discharging platforms appeared in the charge-discharging curves between 0.30 V and 0.35 V, indicating that both the charging and discharging capacity and the charging and discharging time were excellent, and the composite material had good capacitive performance.更多还原