摘要
采用CoCl3·(H2O)6作为钴源通过化学反应制备了Co2O3,并用水热法制备了Co2O3/石墨烯的复合材料。利用XRD、Raman、SEM对其进行结构表征。结果表明:制备样品结晶完整,能够体现相应物相的XRD特征峰值;并且样品的Raman图样不但体现出Co2O3的特征谱峰,而且在能够体现石墨烯单层结构分离度好的2D峰处也表现出优异的特性。样品微观组织观察发现Co2O3呈棒状短柱状嵌入或平布在石墨烯基底上。电化学测试表明:复合材料电化学性能优良,在50mV/s的扫描速率下质量比电容达到了240F/g。
Co2O3/graphene composite was prepared by hydrothermal method. Co2O3 was prepared by chemical method from CoCl3·(H2O)6. The structure was characterized by XRD,Raman and SEM. The results show that the prepared samples have complete crystallization and can reflect the XRD characteristic peaks of corresponding phases,and the Raman pattern of the samples not only reflects the characteristic peaks of Co2O3,but also shows excellent characteristics at the 2D peaks which can reflect the good separation of graphene monolayer structure. Microstructure observation of the samples showed that Co2O3 was rod-shaped and short columnar embedded or flat on graphene substrates. The electrochemical tests show that the composite has excellent electrochemical properties and the mass specific capacitance reaches 240 F/g at the scanning rate of 50 mV/s.
作者
崔浩田
苏钰
胡洋阳
冯萧萧
CUI Hao-tian;SU Yu;HU Yang-yang;FENG Xiao-xiao(School of Material Engineering,Shanghai University of Engineering Science,Shanghai 201600,China)
出处
《人工晶体学报》
EI
CAS
北大核心
2019年第5期873-877,888,共6页
Journal of Synthetic Crystals
基金
国家自然科学基金(51301105)
