| 年思宇,张燕,张国峰,秦攀,宋吉明.化学通报,2019,82(11):989-994. |
| Co(OH)2/ Ni(OH)2复合电极材料制备及其超级电容性质 |
| Synthesis of Ni(OH)2/Co(OH)2 Composite Electrode Materials and their Supercapacitor Performance |
| 投稿时间：2019-06-15 修订日期：2019-07-25 |
| DOI： |
| 中文关键词: Co(OH)2/ Ni(OH)2复合材料 溶剂热合成 煅烧 超级电容器 电化学性能 |
| 英文关键词:Co(OH)2/Ni(OH)2 Composite materials Solvothermal route Calcination NiCo2O4 Electrochemical properties |
| 基金项目:国家自然科学基金项目(21641007)、安徽省教育厅重大项目（KJ2016SD63） |
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| 中文摘要: |
| 以Co(NO3)2·6H2O和Ni(NO3)2·6H2O为钴源和镍源，采用溶剂热法一步合成了Co(OH)2/ Ni(OH)2复合材料，通过煅烧该复合材料可得到NiCo2O4。采用XRD，SEM，BET等对材料进行了表征，结果表明，Co(OH)2/ Ni(OH)2复合材料是薄片组成的花状形貌，比表面积为37.48 m2·g-1。电化学性能测试表明， Co(OH)2/ Ni(OH)2复合材料比NiCo2O4具有更高的比电容值和容量保持率。在0.5 A·g-1的电流密度下，复合材料比电容值可达到1097.8 F·g-1，而NiCo2O4比电容值仅为86.1 F·g-1。因此，与煅烧后的NiCo2O4材料相比，Co(OH)2/ Ni(OH)2复合材料具有更加优良的电化学性能，这为高性能超级电容器材料的制备提供了一个新思路。 |
| 英文摘要: |
| Co(OH)2/Ni(OH)2 composite materials were synthesized by solvothermal route using Co(NO3)2·6H2O and Ni(NO3)2·6H2O as cobalt and nickel sources, respectively. NiCo2O4 material could be obtained by calcining the composite. The obtained materials were characterized by XRD, SEM and BET. The results show that the Co(OH)2/Ni(OH)2 composite exhibited flower-like morphology with a specific surface area of 37.48 m2·g-1. The tests of the electrochemical properties show that the Co(OH)2/Ni(OH)2 composite materials had higher specific capacitance and capacity retention than that of NiCo2O4 material. At 0.5 A·g-1, the specific capacitance of the composite materials could reach 1097.8 F·g-1, while that of NiCo2O4 is only 86.1 F·g-1. Therefore, the Co(OH)2/Ni(OH)2 composite materials has better electrochemical properties than the NiCo2O4 obtained by calcining, thus provides a new idea for preparing high performance supercapacitor materials. |
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