分别采用普通化学气相沉积(CVD)和等离子体增强化学气相沉积(PECVD)在镍粉体颗粒上生长石墨烯的方法,制备出原位石墨烯包覆镍复合颗粒。采用扫描电子显微镜、能谱仪及拉曼光谱仪对两种方法制备的原位石墨烯包覆镍复合颗粒表面石墨烯的形态、分布、结晶质量等特征进行较为系统的测试表征。结果表明,普通CVD法制备的石墨烯沿镍颗粒表面面内生长,较为均匀地包覆着镍颗粒,具有较多褶皱,且石墨烯结晶质量高,缺陷少;PECVD法制备的镍颗粒表面的石墨烯片经较小,呈散乱分布,结晶质量不高,含有缺陷较多。
In-situ graphene coated nickel particles were prepared by growing graphene on nickel powder particles through thermal chemical vapor deposition and plasma-enhanced chemical vapor deposition.The morphology,distribution,crystallization quality characteristics of graphene on the nickel particle were examined systematically by using scanning electron microscope,energy dispersive spectrometer and raman spectrometer.The results showed that the graphene prepared by thermal CVD grew along the surface of nickel particles,and coating the surface uniformly.The particles had many wrinkles,high crystallinity and fewer defects.The graphene prepared by PECVD was scattered on the surface of nickel particles with low crystallinity and many defects.
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基金资助
北京市优秀人才培养资助青年骨干个人资助项目(2016000052580G25);航空科学基金资助项目(2016ZF25024);预研领域基金资助项目(6140922020116HK5500);国家自然科学基金青年基金资助项目(51701199)
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