Hahm Myung Gwan, Nam Jaewook, Choi Minseok, Park Chi-Dong, Cho Byungjin, Kazunori Sanada, Kim Yoong Ahm, Kim Dong Young, Endo Morinobu, Kim Dong-Ho, Vajtai Robert, Ajayan Pulickel M, Song Sung Moo
Department of Advanced Functional Thin Films, Surface Technology Division, Korea Institute of Materials Science, 797 Changwondaero, Sungsan-Gu, Changwon, Gyeongnam 642-831, Korea.
Nanotechnology. 2015 May 29;26(21):215603. doi: 10.1088/0957-4484/26/21/215603. Epub 2015 May 6.
Al-based composites incorporating multilayered graphene sheets were developed via a facile approach. The multilayered graphene sheets were fabricated from the expanded graphite via a simple mechanical exfoliation process. The facile extrusion molding process with Al powder and graphene sheets exfoliated from expended graphite afforded Al-based graphene composite rods. These composites showed enhanced thermal conductivity compared to the pristine Al rods. Moreover, the Al-based multilayered graphene sheet composites exhibited lower interfacial contact resistance between graphene-based electrodes than the pristine Al. With increasing degrees of dispersion, the number of exposed graphene sheets increases, thereby significantly decreasing the interfacial contact resistance between the composite and external graphite electrode.
通过一种简便的方法制备了包含多层石墨烯片的铝基复合材料。多层石墨烯片是通过简单的机械剥离工艺由膨胀石墨制备而成。将铝粉与从膨胀石墨中剥离出的石墨烯片进行简便的挤出成型工艺，得到了铝基石墨烯复合棒。与原始铝棒相比，这些复合材料显示出更高的热导率。此外，铝基多层石墨烯片复合材料在石墨烯基电极之间表现出比原始铝更低的界面接触电阻。随着分散程度的增加，暴露的石墨烯片数量增加，从而显著降低了复合材料与外部石墨电极之间的界面接触电阻。
