Preparation method of Co9S8-C supercapacitor composite electrode material

• Main Authors: HAN JIANTAO, SUN SHIXIONG
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2018
• 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; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING

The invention relates to a preparation method of a Co9S8-C supercapacitor composite electrode material. The preparation method comprises the steps of: preparing a precursor Co3(BTC)2 DMF by using a nickel source and BTC through a solvothermal reaction; pre-carbonizing the Co3(BTC)2 DMF, so as to obtain pre-carbonized Co3(BTC)2 DMF; and mixing the pre-carbonized Co3(BTC)2 DMF with sulfur powder, and vulcanizing the mixture to obtain Co9S8-C. The preparation method has the beneficial effects of increasing the conductivity of the Co9S8-C composite material, preventing the agglomeration and pulverization of Co9S8 nano-particles during the charge-discharge process, having excellent cycling stability, being rich in pore channel structures, having excellent rate performance; meanwhile, the obtained Co9S8-C composite material further has the beneficial effects that the particle size of Co9S8 is about 10 nm, the specific surface area is large, the utilization rate of the electrode material is high, and the specific ca