Ramachandran Rajendran, Xuan Wenlu, Zhao Changhui, Leng Xiaohui, Sun Dazhi, Luo Dan, Wang Fei
Department of Electronic and Electrical Engineering, Southern University of Science and Technology Shenzhen 518055 China
Shenzhen Key Laboratory of 3rd Generation Semiconductor Devices Shenzhen 518055 China.
RSC Adv. 2018 Jan 17;8(7):3462-3469. doi: 10.1039/c7ra12789h. eCollection 2018 Jan 16.
Cerium metal-organic framework based composites (Ce-MOF/GO and Ce-MOF/CNT) were synthesized by a wet chemical route and characterized with different techniques to characterize their crystal nature, morphology, functional groups, and porosity. The obtained Ce-MOF in the composites exhibit a nanorod structure with a size of ∼150 nm. The electrochemical performance of the composites was investigated in 3 M KOH and 3 M KOH + 0.2 M KFe(CN) electrolytes. Enhanced electrochemical behavior was obtained for the Ce-MOF/GO composite in both electrolytes and exhibited a maximum specific capacitance of 2221.2 F g with an energy density of 111.05 W h kg at a current density of 1 A g. The large mesoporous structure and the presence of oxygen functional groups in Ce-MOF/GO could facilitate ion transport in the electrode/electrolyte interface, and the results suggested that the Ce-MOF/GO composite could be used as a high-performance supercapacitor electrode material.
通过湿化学路线合成了铈基金属有机框架基复合材料（Ce-MOF/GO和Ce-MOF/CNT），并用不同技术对其进行表征，以确定其晶体性质、形态、官能团和孔隙率。复合材料中获得的Ce-MOF呈现出尺寸约为150 nm的纳米棒结构。在3 M KOH和3 M KOH + 0.2 M KFe(CN)电解质中研究了复合材料的电化学性能。Ce-MOF/GO复合材料在两种电解质中均表现出增强的电化学行为，在1 A g的电流密度下，其最大比电容为2221.2 F g，能量密度为111.05 W h kg。Ce-MOF/GO中较大的介孔结构和氧官能团的存在可促进电极/电解质界面中的离子传输，结果表明Ce-MOF/GO复合材料可作为高性能超级电容器电极材料。
