| 金小青,胡忠山,曹杰,杨自嵘.化学通报,2015,78(2):158-163. |
| CoxNi1-x层状双氢氧化物复合材料的制备及其超级电容器性能 |
| Synthesis of CoxNi1–x LDHs Composites andits SuperCapacitor Properties |
| 投稿时间：2014-06-03 修订日期：2014-09-02 |
| DOI： |
| 中文关键词: 超级电容器 电极材料 钴镍双氢氧化物 电化学性能 |
| 英文关键词:Supercapacitor electrode materials CoxNi1–xLDHs Electrochemical performances |
| 基金项目: |
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| 中文摘要: |
| 通过化学共沉积的方法制备了具有高比电容的新型有序介孔CoxNi1–x层状双氢氧化物复合材料。采用电子能谱(EDS)、红外(FT–IR)、X 射线衍射(XRD)、扫描电镜(FESEM)表征了产物的组成、结构和形貌,用循环伏安、恒电流充放电等测试方法对复合材料的电化学性能进行了研究。测试表明Co0.5574Ni0.4426LDHs复合材料具有最佳的电容性能,在1 A.g-1的电流密度下,比电容高达2552F.g–1,且循环1000次后,比电容仍能保持90.6%,呈示该复合材料具有优异的电化学性能。 |
| 英文摘要: |
| A novel nanostructured mesoporous CoxNi1–x layered double hydroxides (CoxNi1–x LDHs) Composites were synthesized by a chemical co-precipitation method, which to obtain ultrahigh specific capacitances of supercapacitor electrode materials. In this study, energy dispersed X-ray spectrometry (EDS), Fourier Transform Infrared (FT-IR) spectrometry, powder X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) were used to investigate the component, structure, morphology. The electrochemical performances were investigated by cyclic voltammetry and constant current charge/discharge techniques. The results show that the Co0.5574Ni0.4426LDHs electrodes exhibit excellent electrochemical performances, and its specific capacitance as single electrode is up to 2552F.g–1, and remains at about 90.6% of the initial value after 1000 cycles at current density of 1 A.g-1. Indicating that the composite is of excellent electrochemical performance. |
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