文献类型：期刊文献

中文题名：无定型态Ni-MOF纳米片层结构的制备及其超级电容性能研究

英文题名：Amorphously Layer-shaped Nanosheet of Ni-MOF as a Supercapacitive Electrode

作者：韩喜盈[1];朱强[1];潘洁茹[1];雷晓萍[1];姜先进[1];杨杰[1]

第一作者：韩喜盈

机构：[1]新乡学院化学与化工学院

第一机构：新乡学院化学化工学院

年份：2018

卷号：47

期号：20

起止页码：1-4

中文期刊名：山东化工

外文期刊名：Shandong Chemical Industry

基金：国家自然科学基金(51701173);河南省教育厅重点项目(18A530004)

语种：中文

中文关键词：Ni-MOF;CNT;超级电容器;电化学;复合材料

外文关键词：Ni-MOF;CNT;supercapacitor;electrochemical;composite

摘要：作为一种新型层状结构电极材料,Ni-MOF已逐渐成为超级电容器领域的一个研究热点。本实验采用简单的水热法得到无定型态的Ni-MOF纳米片层材料,电化学测试表明该材料在电流密度为0. 5 Ag-1时可以展现出870 Fg-1的最大比容量,当电流密度增大至5Ag-1,比容量仍有429 Fg-1,表现出良好的高容量和大倍率性能,但其循环稳定性较差,2 Ag-1下循环1000次后的容量保持率仅为71%。与CNT复合后,Ni-MOF的循环稳定性得到了明显改善,同样倍率下循环1000次后的容量保持率为85%,同时比容量及倍率性能也得到了大幅提高。Ni-MOF/CNT复合材料电化学性能的提高主要得益于CNT良好的电子导电能力与Ni-MOF赝电容储存能力之间的协同作用。该复合材料未来有望成为一种新型赝电容超级电容器电极材料。
As a newly layered structured electrode material,Ni-based metal-organic framework(Ni-MOF)has gradually become a hot topic in the area of supercapacitors.A simple hydrothermal process was used to obtain the amorphously layer-shaped nanosheet of Ni-MOF.The electrochemical tests demonstrate that this material can exhibit a maximum specific capacitance of 870 Fg-1 at 0.5 Ag-1.When the current density was increased to 5 Ag-1,a high value of 429 Fg-1 was still remained,indicating high capacitance and high power performance.However,the cycling was poor that the capacitance retention was only kept about 71%after 1000 cycles.After the recombination with CNT,the cycling performance was improved with a retention value of 85%at the same rate after 1000 cycles.At the same time,the capacitance and power performance was all drastically improved.The improvement in electrochemical performance of the Ni-MOF/CNT material can be attributed to the synergy effect between the good electric conductivity of CNT and significant pseudocapacitance behavior of Ni-MOF.This synthesized composite may become a newly pseudocapacitive electrode material for supercapacitors in future.