The invention relates to a preparation method of anode material for multistage porous carbon nanofibers loaded with titanium dioxide nanoparticles lithium ion capacitor. The method comprises the following steps: (1) the configuration of impregnating base solution: the mass ratio of tetrabutyl titanate to glacial acetic acid to ethanol is 1:2:4, the tetrabutyl titanate is slowly poured into glacial acetic acid, stirred evenly and mixed with ethanol to prepare the impregnating base solution; (2) multistage porous carbon nano Preparation of nano-sized titanium dioxide nano-particle lithium ion capacitor anode materials: The nano-porous carbon nanofibers were immersed in the base solution in different proportions, dried and roasted after immersion for a certain time, and then the nano-sized titanium dioxide nano-particle lithium ion capacitor anode materials were obtained. The multi-stage porous carbon nanofibers prepared by the invention can be used as anode materials for lithium ion capacitors containing nano-particles of titanium dioxide. The multi-stage porous carbon nanofibers skeleton effectively inhibits the aggregation of nano-particles of titanium dioxide, improves the conductivity of titanium dioxide, improves its rate performance and cycle stability as lithium ion capacitors, and the preparation method is simple to operate, highly controllable, good repeatability and easy to scale. Production.
【技术实现步骤摘要】
一种多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料的制备方法
本专利技术涉及一种多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料的制备方法,特别是提供一种简单易行、环境友好型、可量产的在具有通孔结构的多级孔碳纳米纤维上生长TiO2纳米颗粒的制备方法,且制得复合材料具有多级孔结构、比表面积大、材料之间结合能力强、稳定性好等优势。技术背景全球变暖和化石燃料的日益枯竭迫使人们大力发展可持续和可再生能源,太阳能和风能作为最有前景的能源而引起了广泛关注。然而,太阳能在夜晚不能工作,风能也具有不确定性,因此电化学储能装置在实际应用中尤为重要。具有较高能量密度(150-200Whkg-1)的锂离子电池(LithiumionBatteries,LIBs)以及具有高功率密度(>10kWkg-1)和长循环寿命(104-105循环)的电化学容器(ElectrochemicalCapacitors,ECs)引起了广泛关注。但LIBs的功率密度较低(<1000Wkg-1)、循环稳定性较差(<1000times),ECs能量密度较低(<10Whkg-1),因此迫切需求一种类似LIBs具有高能量密度且类似ECs具有高功率密度和长循环寿命的一种理想的能量储存装置。锂离子电容器(也称为锂离子混合超级电容器Lithium-ionCapacitors,LICs)一般由高能量LIB负极、高功率的EC正极与锂盐电解质构成,其成功结合了电池和电容器能量储存机制的优点,具有比LIBs更高的功率密度、更长的循环寿命以及比SCs更高的能量密度,被认为是最有前景的能量存储器件之一。锐钛矿T ...
【技术保护点】
1.一种多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料的制备方法,其特征包括以下步骤:(1)浸渍基液的配置以钛酸四丁酯∶冰乙酸∶乙醇的质量比为1∶2∶4,在冰乙酸中缓慢倒入钛酸四丁酯,搅拌均匀后混入乙醇,制得浸渍基液;(2)多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料的制备:以不同多级孔碳纳米纤维与钛酸四丁酯的质量比向多级孔碳纳米纤维中加入基液,静止后干燥,随后在空气氛围中烧结一定的时间,获得多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料。
【技术特征摘要】
1.一种多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料的制备方法,其特征包括以下步骤:(1)浸渍基液的配置以钛酸四丁酯∶冰乙酸∶乙醇的质量比为1∶2∶4,在冰乙酸中缓慢倒入钛酸四丁酯,搅拌均匀后混入乙醇,制得浸渍基液;(2)多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料的制备:以不同多级孔碳纳米纤维与钛酸四丁酯的质量比向多级孔碳纳米纤维中加入基液,静止后干燥,随后在空气氛围中烧结一定的时间,获得多级孔碳纳米纤维载TiO2纳米颗粒锂离子电容器负极材料。2.根据权利要求1所述的多级孔碳纳米纤维载...
【专利技术属性】
技术研发人员:程博闻,鞠敬鸽,康卫民,王利媛,刘为翠,邓南平,
申请(专利权)人:天津工业大学,
类型:发明
国别省市:天津,12
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