Ultra-low temperature chlorine salt system supercapacitor electrolyte

Abstract

An ultra-low temperature chlorine salt aqueous super capacitor electrolyte capable of enabling a super capacitor battery to have excellent electrochemical performance under the condition of an ultra-low temperature. The ultra-low temperature chlorine salt aqueous super capacitor electrolyte is prepared according to the following method that distilled water and an organic solvent containing amino group are mixed at a volume ratio of 1:2-2:1 and a chlorine salt is dissolved in the mixed solvent to form a solution with a concentration of 0.5-2 mol L-1, i.e., the electrolyte solution for the super capacitor battery using a carbon material as an electrode material. At a temperature of -60°C, the specific capacitance of the super capacitor battery made of the above-mentioned electrolyte is more than twice that of a super capacitor battery made of a pure water electrolyte using the chlorine salt with the same concentration and is approximately two thirds that at the room temperature. The electrolyte is used for a super capacitor battery, has a low price, a simple and convenient operation, low toxicity and good low-temperature performance and has a higher application value.

Description

Technical field [0001] The invention relates to a low-temperature electrolyte, in particular to an ultra-low temperature chlorinated salt water-based super capacitor electrolyte that can make a super capacitor battery have excellent electrochemical performance under ultra-low temperature conditions. Background technique [0002] Supercapacitor batteries are also called gold capacitors, farad capacitors, and electrical double-layer capacitors (Electrical Double-Layer Capacitor). They are a new type of energy storage device with short charging time, long service life, good temperature characteristics, energy saving and environmental protection. Features. Since the energy storage process does not undergo chemical reactions, this energy storage process is reversible, precisely because the supercapacitor can be repeatedly charged and discharged hundreds of thousands of times. Supercapacitors have a wide range of uses: used as a power balance power supply for lifting devices, which ca...

AI Technical Summary

Problems solved by technology

However, non-aqueous electrolytes have some fatal disadvantages: low conductivity, high cost, require sealing to isolate moisture in the air, and many are highly toxic and pollute the environment, thus limiting their use

But so far, relevant research at home and abroad has reported

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