Construction of simple three-dimensional graphene and metal organic framework for a flexible composites, and derivatives thereof all solid state supercapacitors

In this paper, a simple mixing process to prepare a variety of large-scale three-dimensional (3D) graphene oxide / metal-organic framework (GO / MOF) composites. This method of preparation can be quickly controllable component obtained within a few minutes GO / MOF composite hydrogel, it is also applicable to a range of different MOFs. GO / MOF composite material as a precursor obtained by freeze-drying and calcination to prepare a composite airgel MOF derivatized, e.g. rGO / Fe2O3 and rGO / NiO / Ni composite airgel. When used as a super-capacitor electrode, rGO / Fe2O3 as a super-capacitor electrode, having excellent rate performance, a current density of 1 20 A g 1-time and that the specific capacitance of 869.2 and 289.6 F g-1, and after the 5000 cycle circle, the capacitance without significant attenuation. Further, based on the obtained rGO / Fe2O3 composite airgel, we constructed a flexible solid-state supercapacitor device, at the current 6.4 mA cm-3, the volume capacitance 250 mF cm-3, at a constant current of 50.4 mA cm ( -3) after 5000 cycles under conditions coil electrically capacity even 96.3%, the device also has excellent mechanical flexibility. Principle (c) Construction of an all-solid super capacitor means; 简易构建三维石墨烯和金属有机骨架复合材料及其衍生物用于柔性全固态超级电容器 简易构建三维石墨烯和金属有机骨架复合材料及其衍生物用于柔性全固态超级电容器 简易构建三维石墨烯和金属有机骨架复合材料及其衍生物用于柔性全固态超级电容器 简易构建三维石墨烯和金属有机骨架复合材料及其衍生物用于柔性全固态超级电容器 简易构建三维石墨烯和金属有机骨架复合材料及其衍生物用于柔性全固态超级电容器 简易构建三维石墨烯和金属有机骨架复合材料及其衍生物用于柔性全固态超级电容器 Figure 6. (a) specific capacitance at different current densities; (b) Ragone curve a schematic view of a tandem cell and lit red LED; (d) CV curves at different scan rates; (e) cycling performance test; (f) CV curves tested at different curvature conditions.

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