Conductive  nano carbon blacks and carbon nanocapsules were synthesized by an acetylene flame method. Carbon nanocapsules, a graphitic structure of nanoparticles with a hollow core can be formed at about 800 °C. The diameter of the products is about 20 nm with high purity. The characterization of the products using scanning electron microscope, transmission electron microscope thermogravimetric analysis and Raman scattering spectrometer show that the conductive nano carbon black and carbon nanocapsules possess an excellent thermal stability, graphitization and crystallinity. Depending on the synthesis temperature, the size and quality can be altered. In comparison with the commercial product, such as carbon black XC-72 or XC-72R, the conductive nano carbon black and carbon nanocapsules perform better in term of conductivity and dispersion in the batteries applications. In addition, with the presence of the Ni catalyst, multi-welled carbon nanotubes can also be produced. The temperature and reaction time play an important role on the quality and purity of the carbon nanotubes. The carbon nanotubes with a diameter ranging from 20 to 30 nm were synthesized under a well-controlled combustion process with CoCl catalyst precursor in the reaction. The acetylene flame method holds great potential for the cost effective production of carbon nanotubes, carbon nanocapules and conductive nano carbon black.

奈米尺度高導電性碳黑

鋰離子電池、金屬空氣電池、燃料電池。