Preparation method of array-shaped multi-stage-structured cobalt nickel sulfide/foamed nickel supercapacitor electrode

• Main Authors: WU DAPENG, ZHANG LINGCUI, GAO ZHIYONG, CHEN CHEN, JIANG KAI, XU FANG
• Format: Patent
• Language: Chinese; English
• Published: 19.12.2017
• 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 invention discloses a preparation method of an array-shaped multi-stage-structured cobalt nickel sulfide/foamed nickel supercapacitor electrode, and belongs to the preparation technical field of the supercapacitor electrode. The technical scheme is characterized by comprising the steps of taking foamed nickel, cobalt nitrate and urea as the raw materials, performing a hydrothermal reaction in a hydrothermal reaction kettle at a temperature of 100-180 DEG C for 5-12h to deposit and grow a honeycomb-shaped multi-stage-structured cobalt zinc double hydroxide precursor assembled by ultra-thin lamination sheets in a crosslinking manner on a foamed nickel substrate; and next, immersing the precursor into a sodium sulfide solution to perform a secondary hydrothermal reaction at a temperature of 100-180 DEG C for 3-36h to convert the cobalt zinc double hydroxide precursor into sulfide to finally prepare the array-shaped multi-stage-structured cobalt nickel sulfide/foamed nickel supercapacitor electrode assembled