CN108178144B - 一种碳纳米管气凝胶及其制备和应用 - Google Patents
一种碳纳米管气凝胶及其制备和应用 Download PDFInfo
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Abstract
本发明涉及一种碳纳米管气凝胶及其制备和应用,所述碳纳米管气凝胶的制备方法是将碳纳米管与具有高温膨胀性质的碳前体机械混合,碳前体在高温下膨胀并将碳纳米管包覆交联起来,形成碳纳米管气凝胶。与现有技术相比,本发明具有如下优点:制备过程中碳纳米管无需氧化处理,保持了碳纳米管的物理化学性质;制备工艺简单、无需冷冻干燥等苛刻的制备条件,满足大规模生产。同时制备的碳纳米管气凝胶具有较大的表面积,良好的孔结构,使其在能量的转换与存储、吸附、传感器以及绝热保温等领域均有良好的应用前景。
Description
技术领域
本发明涉及碳材料及其制备技术领域,具体涉及一种碳纳米管气凝胶及其制备和应用。
背景技术
碳气凝胶是具有高比表面积和较低密度的多孔纳米材料。最初,碳气凝胶是以间苯二酚和甲醛为原料,在碱性条件下形成凝胶后,通过超临界干燥制得的气凝胶,后经碳化制备而成。碳气凝胶作为一种新型的介孔和微孔结构材料,其多孔率达80%~99.8%,比表面积高达200~1500m2/g。碳气凝胶在很多领域有着广泛的应用,如催化剂及催化剂载体、气体过滤材料、高效隔热材料等,也可用于电极材料。碳气凝胶的制备一般采用溶胶凝胶法或模板导向法,然而前者一般要用到冷冻干燥来去除凝胶中的溶剂来保持骨架结构,制备条件苛刻;后者依赖于模板的精细结构和尺寸,难以大批量制备。
碳纳米管是由碳原子组成的一种新型的碳纳米材料,由于其独特的一维结构,以及高的石墨化程度,具有优异的电学及力学性能。而碳纳米管制备一般采用化学气象沉积法,所制备的碳纳米管不容易分散在溶剂中。应用碳纳米管制备碳气凝胶时一般会对碳纳米管进行氧化处理,这极大地破坏了碳纳米管的物理化学性质。因此开发一种新的制备碳纳米管气凝胶的方法仍然面临着极大地挑战。
发明内容
本发明针对碳纳米管气凝胶及其制备技术的不足,提出了一种碳纳米管气凝胶及其制备方法,本发明采用以下具体方案实现的:
一种碳纳米管气凝胶,所述碳纳米管气凝胶包括多孔的碳纳米片层,孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。
多孔的碳纳米片层的厚度为20nm-5μm,孔隙率为0.5-2cm3/g,孔径尺寸在0.5nm-20nm;碳纳米管的直径5-50nm长度10nm-1μm。
碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P、S、B中的一种或两种以上;所述碳纳米片层中N元素的原子百分比为1%-10%,所述异质元素P、S、B中的一种或两种以上的总的原子百分比为1%-10%。
所述碳纳米管气凝胶的制备方法,包括以下步骤,
(1)具有高温膨胀性质的碳前体的制备:将多元醇和无机酸搅拌均匀后并加热抽真空使其发生酯化反应,将含氨基化合物的分散液加入所得反应产物中,再次混合均匀后加热使其发生成盐反应,得具有高温膨胀性质的碳前体;
(2)碳纳米管气凝胶的制备:将步骤(1)所得具有高温膨胀性质的碳前体与碳纳米管混合均匀后于惰性气氛中高温碳化处理,得碳纳米管气凝胶。所述混合方式为球磨或用研钵机械混合,前体混合的越均匀,所得碳纳米管气凝胶中碳纳米管在碳纳米片中的分布越均匀。
步骤(1)中所述多元醇与无机酸的物质的量的比为2:1-1:8;所述无机酸与氨基化合物的物质的量的比为5:1-1:5。
步骤(1)中所述多元醇为季戊四醇、木糖醇、山梨醇中一种或两种以上;所述无机酸为质量浓度20-90%硼酸、质量浓度20-85%磷酸、质量浓度20-98%硫酸、质量浓度20-80%硝酸中一种或两种以上;所述氨基化合物分散液中的溶剂为水、甲醇、乙醇、乙二醇中一种或两种以上的混合液;氨基化合物的质量浓度为3-50%;所述氨基化合物为尿素、三聚氰胺、氰胺、氨基酸中一种或两种以上。
步骤(1)中所述酯化反应的条件为于70-200℃下反应0.5-5h;真空度为0.03-0.2Mpa,所述成盐反应条件为30-150℃温度下反应2-24h。
步骤(2)中所述碳纳米管与碳前体的质量比为1:10-1:200。
步骤(2)中所述高温碳化处理条件为从室温升温至300-600℃并保持0.5-3h,继续升高温度至700-1100℃,保持此温度0.5-3h,冷却至室温;所述升温过程中的升温速率为2-10℃/min。
步骤(2)中所述惰性气氛为氮气、氩气、或氮气和氩气混合气。
所述碳纳米管气凝胶为超级电容器电极材料、压力传感器材料、锂硫电池电极材料。
与现有技术相比,本发明具有如下优点:制备过程中碳纳米管无需氧化处理,保持了碳纳米管的物理化学性质;制备工艺简单、无需冷冻干燥等苛刻的制备条件,满足大规模生产。同时制备的碳气凝胶具有较大的表面积,良好的孔结构,使其在吸附与能量的转换与存储领域均有较大的潜在应用前景。
附图说明
图1:碳纳米管气凝胶低倍SEM照片;
图2:碳纳米管气凝胶高倍SEM照片;
图3:碳纳米管气凝胶低倍TEM照片;
图4:碳纳米管气凝胶高倍TEM照片。
具体实施方式
实施例1
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管5mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持0.5h,继续以5℃/min的升温速率升温至900℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为40nm-60nm,孔隙率为1.5-2cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为3%-8%,所述异质元素P占总的原子百分比为3%-8%。
实施例2
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管10mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持0.5h,继续以5℃/min的升温速率升温至900℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为40nm-60nm,孔隙率为1.3-1.8cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为3%-5%,所述异质元素P占总的原子百分比为3%-5%。
实施例3
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管20mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持0.5h,继续以5℃/min的升温速率升温至900℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为40nm-60nm,孔隙率为1.1-1.3cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为1%-3%,所述异质元素P占总的原子百分比为1%-3%。
实施例4
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管30mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持0.5h,继续以5℃/min的升温速率升温至900℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为40nm-60nm,孔隙率为0.8-1.1cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为1%-2%,所述异质元素P占总的原子百分比为1%-2%。
实施例5
称取13.6g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管10mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持0.5h,继续以5℃/min的升温速率升温至900℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为60nm-80nm,孔隙率为1.1-1.5cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为3%-5%,所述异质元素P占总的原子百分比为3%-5%。
实施例6
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温3h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管10mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持0.5h,继续以5℃/min的升温速率升温至900℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为60nm-80nm,孔隙率为1.1-1.5cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为3%-5%,所述异质元素P占总的原子百分比为3%-5%。
实施例7
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温3h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管10mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持2h,继续以5℃/min的升温速率升温至900℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为60nm-80nm,孔隙率为1.1-1.5cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为3%-5%,所述异质元素P占总的原子百分比为3%-5%。
实施例8
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管10mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持2h,继续以5℃/min的升温速率升温至950℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为60nm-80nm,孔隙率为1.5-1.8cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为2%-4%,所述异质元素P占总的原子百分比为2%-4%。
实施例9
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管20mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持2h,继续以5℃/min的升温速率升温至1050℃,保持2h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为60nm-80nm,孔隙率为1.7-2.1cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为1%-3%,所述异质元素P占总的原子百分比为1%-3%。以其作为超级电容器电极,在6M KOH溶液中,比容量达到240F/g,且倍率性能优异。
实施例10
称取6.8g季戊四醇于烧瓶中,加入29.40g磷酸,减压蒸馏(真空度为0.1MPa),搅拌,加热至120℃,保温1.5h,得到淡黄色透明粘稠状季戊四醇磷酸酯液体。在另一圆底烧瓶中加入120mL乙醇和16.38g三聚氰胺,充分搅拌1.5h,将上步中合成得到的季戊四醇磷酸酯倒入装有乙醇分散剂的三聚氰胺中,加热至80℃,搅拌回流6h,得到白色乳浊液,旋转蒸发的大白色固体,将白色固体。称取膨胀型前体2g与碳纳米管20mg在研钵中混合均匀。将混合物放于石英舟,在氮气氛围下,5℃/min的升温速率升温至350℃,保持2h,继续以5℃/min的升温速率升温至1050℃,保持4h,冷却至室温取出的碳纳米管气凝胶。碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。多孔的碳纳米片层的厚度为60nm-80nm,孔隙率为1.7-2.1cm3/g,孔径尺寸在0.5nm-8nm;碳纳米管的直径20-25nm,长度为100nm-1μm。碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P;所述碳纳米片层中N元素的原子百分比为1%-3%,所述异质元素P占总的原子百分比为1%-3%。碳纳米管的微观结构见附图1,制备出的样品为具有一定机械性能的泡沫状的整体结构,微观结构为片层交联的三维骨架结构。图2高倍SEM显示片层由碳纳米管于碳的纳米片组成,且碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中。TEM(图3,4)也证实碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中,形成片层结构。
Claims (9)
1.一种碳纳米管气凝胶的制备方法,其特征在于:
所述碳纳米管气凝胶包括多孔的碳纳米片层,多孔的碳纳米片层相互交联成三维骨架结构,碳纳米管穿插于多孔的碳纳米片层上,碳纳米管的部分或全部处于多孔的碳纳米片层中;
所述碳纳米管气凝胶的制备方法,包括以下步骤,
(1)具有高温膨胀性质的碳前体的制备:将多元醇和无机酸搅拌均匀后并加热抽真空使其发生酯化反应,将含氨基化合物的分散液加入所得反应产物中,再次混合均匀后加热使其发生成盐反应,得具有高温膨胀性质的碳前体;
(2)碳纳米管气凝胶的制备:将步骤(1)所得具有高温膨胀性质的碳前体与碳纳米管混合均匀后于惰性气氛中高温碳化处理,得碳纳米管气凝胶。
2.如权利要求1所述的制备方法,其特征在于:
多孔的碳纳米片层的厚度为20nm-5μm,孔隙率为0.5-2 cm3/g,孔径尺寸在0.5nm-20nm范围内;碳纳米管的直径5-50nm长度10nm-1μm。
3.如权利要求1或2所述的制备方法,其特征在于:
所述碳纳米管气凝胶的碳纳米片层中含有N元素,同时还含有异质元素P、S、B中的一种或两种以上;所述碳纳米片层中N元素的原子百分比为1%-10%,所述异质元素P、S、B中的一种或两种以上的总的原子百分比为1%-10%。
4.如权利要求1所述的制备方法,其特征在于:
步骤(1)中所述多元醇与无机酸的物质的量的比为2:1-1:8;所述无机酸与氨基化合物的物质的量的比为5:1-1:5。
5.如权利要求1所述的制备方法,其特征在于:
步骤(1)中所述多元醇为季戊四醇、木糖醇、山梨醇中一种或两种以上;所述无机酸为质量浓度20-90%硼酸、质量浓度20-85%磷酸、质量浓度20-98%硫酸、质量浓度20-80%硝酸中一种或两种以上;所述氨基化合物分散液中的溶剂为水、甲醇、乙醇、乙二醇中一种或两种以上的混合液,氨基化合物的质量浓度为3-50%;所述氨基化合物为尿素、三聚氰胺、氰胺、氨基酸中一种或两种以上。
6.如权利要求1所述的制备方法,其特征在于:
步骤(1)中所述酯化反应的条件为于70-200℃下反应0.5-5h所述成盐反应条件为30-150℃温度下反应2-24h。
7.如权利要求1所述的制备方法,其特征在于:
步骤(2)中所述碳纳米管与碳前体的质量比为1:10-1:200;
步骤(2)中所述高温碳化处理条件为从室温升温至300-600℃并保持0.5-3h,继续升高温度至700-1100℃,保持此温度0.5-3h,冷却至室温;所述升温过程中的升温速率为2-10℃/min。
8.如权利要求1所述的制备方法,其特征在于:步骤(2)中所述惰性气氛为氮气、氩气、或氮气和氩气混合气。
9.一种权利要求1-8任一所述制备方法制备得到的碳纳米管气凝胶的应用,其特征在于:所述碳纳米管气凝胶为超级电容器电极材料、压力传感器材料、锂硫电池电极材料。
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