摘要
以间苯二酚-甲醛为原料,添加水溶性镍盐,利用溶胶-凝胶法制备了具有纳米多孔结构的掺镍碳气凝胶。通过X射线衍射及透射电镜表征了掺镍碳气凝胶的结构。用比表面积测试及孔径分布测试等手段研究了碳气凝胶的多孔特性,研究表明纯碳气凝胶的比表面积为487.3m^2/g,掺杂后提高到593.3m^2/g。掺镍碳气凝胶的电导率比未掺杂样品有很大的提高。
Porous Ni-doped carbon aerogels are obtained via sol-gel process doping the resorcinol-formaldehyde reaction mixture with nickel acetate. XRD（X-Ray Diffraction） and TEM（Transmission electron microscopy） tests are used to investigate the structure of the carbon aerogels. BET（Brunauer-emmett-teller） and PSD（Pore size distribution） tests are also used to characterize the pore structure of carbon aerogels. As a result, the surface area of Ni-doped carbon aerogel is 593. 3m2/g, while the surface area of pure carbon aerogel is 487.3m2/g. Furthermore, the electric resistance of the carbon aerogels doped with nickel acetate is increased considerably compared with that of pure carbon aerogels.
基金
国家自然科学基金重点资助项目(21033040)
国家高技术863计划(2002AA84052)
上海市科委纳米技术专项(0652nm044)
上海市重点学科建设资助项目(02SL001)
关键词
碳气凝胶
掺镍
电阻率
carbon aerogel, Ni-doping, electric resistance
