Stretchable super capacitor with porous structure and preparation method of stretchable super capacitor

• Main Authors: PENG HUISHENG, HE SISI, CAO JINGYU, HU YAJIE
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2016
• 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 invention belongs to the technical field of super capacitors, and particularly discloses a stretchable super capacitor with a porous structure and a preparation method of the stretchable super capacitor. A catalyst substrate with the porous structure is obtained by ultraviolet lithography and electron beam evaporation coating technologies; controllable growth is carried out through a chemical vapor deposition method to obtain a carbon nanotube array with the porous structure; and carbon nanotube thin-film electrodes are finally obtained by pressing and stripping. Porous thin films are taken as the electrodes; one side of each electrode is coated with a layer of gel electrolyte; and two electrodes coated with the electrolyte are finally assembled to obtain the porous structure-based stretchable super capacitor. According to the prepared super capacitor, the capacity can still be maintained at 98.3% after 140% large deformation stretching for 3,000 times; voltage and current of the super capacitor can be re