Tungsten carbide-embedded carbon nanofiber composite membrane and preparation and application thereof

• Main Authors: GAO WEI, LIU TIANXI, FAN WEI, SHI YIQIN, ZHANG LONGSHENG
• 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; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; NANOTECHNOLOGY; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; 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 tungsten carbide-embedded carbon nanofiber composite membrane and a preparation and an application thereof. The composite membrane is of a three-dimensional porous structure; an ammonium tetrathiotungstate/polyacrylonitrile nanofiber membrane is prepared through electrostatic spinning; and the tungsten carbide/carbon nanofiber composite membrane is prepared through one-step high-temperature carbonization reduction in an argon-hydrogen atmosphere. The tungsten carbide-embedded carbon nanofiber composite membrane is applied as an electrode material of a lithium-ion battery and a super capacitor. The prepared tungsten carbide/carbon nanofiber composite material has excellent conductivity and electrochemical activity. 本发明涉及种碳化钨包埋的碳纳米纤维复合膜及其制备和应用，复合膜为三维多孔结构。通过静电纺丝制备得到四硫代钨酸铵/聚丙烯腈纳米纤维膜，再通过在氩氢气氛中步法高温碳化还原制备得到碳化钨/碳纳米纤维复合膜。碳化钨包埋的碳纳米纤维复合膜作为锂离子电池、超级电容器的电极材料的应用。本发明制备的碳化钨/碳纳米纤维复合材料具有优良的导电性和电化学活性。