Abstract
Carbon nanotubes(CNTs)are fabricated in carbon cloth by ultilizing the waste gasses when fabricating hafnium carbide nanowires(HfCNWs)through thermal pyrolysis of Hf-containing polymer precursor.The formed HfCNWs are distributed uniformly on the surface of the carbon fibers in carbon/carbon(C/C)com-posites and display perfect single crystal appearance.The pyrolysis of the Hf-containing organic precursor provides hafnium and carbon source for the growth of HfCNWs.The released waste gasses containing CO,CH4 and CO2 are the main carbon source for the growth of CNTs.Specifically,the flexural strength of HfCNWs reinforced carbon/carbon(HfCNWs-C/C)composites is enhanced by～105％compared with pure C/C,and the CNTs/carbon cloth also displays improved electrochemical performance with respect to ca-pacitor applications.The present study introduces a novel sustainable and eco-friendly process related to polymer-derived ceramics to form advanced ceramic nanocomposites and proposes a deep understanding of the growth mechanism of CNTs.
基金项目
国家自然科学基金(52130205)
国家自然科学基金(51727804)
国家自然科学基金(91860203)
国家自然科学基金(52061135102)
国家重点研发计划(2021YFA0715803)
China Scholarship Program,2020(CSC 202006290179)
NETL
NSTL
万方数据