ZnFe2O4/C composite nanometer fiber super capacitor electrode material and preparation method thereof

• Main Authors: HAN ZHENZHEN, CAO BINGQIANG, SUN JING, YANG SHUHUA
• Format: Patent
• Language: Chinese; English
• Published: 10.10.2017
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; 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; NATURAL OR ARTIFICIAL THREADS OR FIBRES; PERFORMING OPERATIONS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; SPINNING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TEXTILES; TRANSPORTING

The invention discloses a ZnFe2O4/C composite nanometer fiber super capacitor electrode material and a preparation method thereof; the preparation method comprises the following steps: using a magnetic stirring method to evenly spread ferric chloride hexahydrate, waterless zinc chloride and PAN into a DMF solution; then using a static spinning technology to prepare a PAN/Znl2/FeCl3 precursor composite nanometer fibrofelt, and drying same; finally, carrying out three steps of heat treatments for the dried sample so as to obtain the ZnFe2O4/C composite nanometer fiber super capacitor electrode material, wherein the heat treatments comprise pre-oxidation treatment, low temperature air atmosphere calcining, and high temperature Ar atmosphere calcining. The prepared ZnFe2O4/C composite nanometer fiber is an ultrafine continuous fiber with a stable frame structure, the fiber diameter is controlled as dozens of nanometer to hundreds of nanometer, and the ZnFe2O4/C nanometer particles embedded in the fiber are evenly