Preparation And Application Of High Conductivity Metal Base Array Electrode

In the severe climate of global warming and non-renewable resources continue to reduce the grim situation,people need to develop efficient clean energy to carry out energy storage,while reducing energy consumption to address the shortage of energy and ecological deterioration of the problem.As a new green energy storage device,such as: batteries,fuel cells,electrochemical capacitors and other electrochemical energy products gradually into the people’s vision.However,with the development of electronic communications,electric vehicles,medical equipment and aerospace and other fields,it is necessary to integrate the energy storage device with high power,high energy density and long service life.However,with the increase in device requirements,the heat generated by the device is also growing,thermal problems have become an important part can not be ignored.Electrode material as a key factor affecting the performance of electrochemical devices has become the focus of national scientists.In this paper,the development of high thermal conductivity conductive electrode for the purpose,and used in the device to test its performance.The use of porous metal as the collector,assembled for the electrochemical production or energy storage devices,and made a structural characterization and electrochemical performance analysis,the main research content and results are as follows:1)Three-dimensional porous metal electrode with high thermal conductivity was fabricated by hydrogen bubble dynamic template method,and its morphology was characterized.The results show that the prepared three-dimensional porous metal electrode not only has high thermal conductivity but also has the characteristics of porous,three-dimensional porous interconnection,which makes it practical in electrochemical device.2)NiCoP nanostructures were first synthesized and grown in porous nickel to prepare Ni/porous Ni/NiCoP electrode,which exhibited excellent properties in both thermal conductivity and hydrogen evolution.At the current density of 10 mA cm^-2,the overpotential of the Ni/porous Ni/NiCoP electrode is 71 mV,which is much lower than that of the electrode before phosphating.Under the same conditions,Ni/porous Ni/NiCoP electrode has an area specific capacitance of 96 mF cm^-2,which is eight times than Ni/porousNi/NiCo2O4 electrode and 48 times than Ni/porous Ni substrate.The results show that the three-dimensional porous structure can effectively improve the electrochemical performance and thermal conductivity of electrode.3)Cu@Ni/porous Ni current collector was prepared for the first time.Under the same conditions,not only the thermal conductivity but also the conductivity of the Cu@Ni/porous Ni alloy was better than that of the conventional coating process and the use of nickel as the current collector.4)In order to further apply the Cu@Ni/porous Ni current collector in practice.The MnCo₂O₄ nanocorns were deposited on the surface to prepare a flexible symmetric solid-state supercapacitor,and their electrochemical properties were studied.The structure shows that the symmetrical all-solid-state supercapacitor has excellent bending performance,magnification characteristics,specific capacity and stability.Which provides a reference for practical application.