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10 mV·s^(-1)时,在CV曲线中可以清晰地看到氧化还原峰。电极在0.30~0.35V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。
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.
作者
边建宇
杨洋
郑伊民
刘思彤
赵海涛
BIAN Jian-yu;YANG Yang;ZHENG Yi-min;LIU Si-tong;ZHAO Hai-tao(Shenyang Ligong University,Shenyang Liaoning 110159,China)
出处
《辽宁化工》
CAS
2024年第1期18-21,共4页
Liaoning Chemical Industry
基金
大学生创新创业训练计划(项目编号:202210144010)
沈阳市科技计划项目(项目编号:22-322-3-18)。
