In-situ representation performance testing method based on single nano-wire electrode material

Abstract

The invention discloses an in-situ representation performance testing method based on single nano-wire electrode material. The method comprises the steps of dispersing single nano-wires on an insulating layer as an electrode active material of a super-capacitor; setting up the two ends of single nano-wires on current collectors made from metal materials, and injecting an electrolyte to package, so as to obtain symmetric single nano-wire electrochemical super-capacitor devices; taking single nano-wires as an anode, taking another single nano-wire as a cathode, and then performing in-situ electrical transport property test on the single nano-wire electrode, so as to stand the symmetric single nano-wire electrochemical super-capacitor devices in different charging and discharging conditions. The in-situ representation performance testing method provided by the invention has the beneficial effects of being capable of explaining an essential reason that a coaxial nano-wire structure formed by covering an MnO2 (Manganese Dioxide) nano-wire covered by graphene is excellent in performance when the essential reason that a coaxial nano-wire structure can be taken as an electrode material of the super-capacitor, and an energy storage device with high power density can be provided for nano-devices.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials and electrochemical supercapacitors, and in particular relates to an in-situ characterization performance testing method based on a single nanowire electrode material. Background technique [0002] With the advancement of science and technology, the development of social economy and the rapid growth of population, the consumption of energy is also increasing. The depletion of non-renewable resources urgently requires renewable resources to play their role as substitutes, and at the same time requires the sustainable development of non-renewable resources. , effective use, and give full play to its potential. The existing traditional energy system can no longer meet the needs of the development of modern industry, agriculture, forestry, etc. Fuel and coal resources are not only non-renewable, but also produce a large amount of harmful substances such as CO2 and SO2 in the process of use...

AI Technical Summary

Problems solved by technology

However, the shortcomings of oxides such as poor electrical conductivity and easy agglomeration make it difficult to fully exert their high capacity. We need to provide carriers to enhance their dispersion and improve the utilization of active materials. The theory of graphene The specific surface area can reach 2630m 2 / g, has good electrical conductivity and excellent mechanical properties, and is currently the first choice as an electrode material for supercapacitors

As an electrode material, it can well overcome the problems of small specific surface and poor conductivity of other carbon materials, especially after graphene is curled, there will be a nano-confinement effect in the tube, which will greatly improve the performance of the material, and its mesoporous structure is effective. The specific surface area of ​​the material is greatly increased to increase its capacity, but a single MnO 2 Nanowires, Graphene / MnO 2 Coaxial nanowires, porous graphene / MnO 2 The actual performance of coaxial nanowire electrochemical supercapacitors with tube-in-tube structure is directly related to the nanowire structure and how graphene increases the performance of active materials has not been reported yet.

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