Abstract
Ethylene tar is a prospective precursor for preparing carbonaceous materials,which is regarded as a representative soft carbon material after carbonization.However,the introduction of oxygen can influ-ence the morphology of the final carbonaceous materials.For the introduction of oxygen,dealkylation and dehydrogenation will be promoted and the molecules can be linked more effectively.For the sub-sequent carbonization,the biphenyl structures caused by the deoxygenation via the elimination of CO2,as well as the reserved aromatic ether bonds,can facilitate the strong cross-linking,which will restrain the movement of the carbon layers and the formation of the graphitic structures.After the graphitization treatment at 2800℃,the oxidized pitch can lead to short-range ordered and long-range unordered structures,while the sample without oxidation can result in long-range ordered graphitic structures.It can be proved that a simple oxidation-carbonization treatment can transform ethylene tar into hard carbon structures.
维普
万方数据