Zinc ion supercapacitor electrolyte

• Main Authors: CAO TINGTING, RONG CHANGRU, MA QIANLI, CHEN SHULI, HAN JINLEI
• Format: Patent
• Language: Chinese; English
• Published: 26.09.2017
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The present invention relates to a zinc ion supercapacitor electrolyte. The zinc ion supercapacitor electrolyte comprises deionized water, an inorganic electrolyte salt, a hydrochloric acid solution and ethanol. The volume of the ethanol is 20%-50% of the bulk volume of the electrolyte, the concentration of the inorganic electrolyte salt in the electrolyte is 2-4.5mol/L, and the concentration of the hydrochloric acid solution is 0.3-1 mmol/L. The low-temperature performance is improved, a high specific capacity conservation rate is provided in a low temperature, the zinc ion supercapacitor electrolyte tests the freezing point of the electrolyte and the specific capacity of a buckle-mounted capacitor under the freezing point so as to prove that the low-temperature performance of the electrolyte is good. 本发明涉及种锌离子超级电容器电解液，包括去离子水、无机电解质盐、盐酸溶液以及乙醇，其特征在于：乙醇体积占电解液总体积的20%～50%，所述无机电解质盐在电解液中的浓度为2～4.5mol/L，盐酸溶液的浓度为0.3～1mmol/L。其提高了低温性能，在低温下有比较高的比容量保持率。本发明通过测试电解液的冰点，以及冰点下的扣式电容器的比容量，证明该电解液的低温性能比较好。