• 文献标题:   Carbon allotropes form a hybrid material: Synthesis, characterization, and molecular dynamics simulation of novel graphene-glassy carbon hybrid material
  • 文献类型:   Article
  • 作  者:   NIMBALKAR S, MONTGOMERYWALSH R, BUNNELL J, GALINDO SL, CARIAPPA BK, GAUTAM A, ARVIZU R, YANG SZ, KASSEGNE S
  • 作者关键词:  
  • 出版物名称:   CARBON
  • ISSN:   0008-6223 EI 1873-3891
  • 通讯作者地址:  
  • 被引频次:   2
  • DOI:   10.1016/j.carbon.2022.05.049 EA JUN 2022
  • 出版年:   2022

▎ 摘  要

Using graphene (Gr) and glassy carbon (GC) as building blocks, we introduce a hybrid material with superior electrical and electrochemical properties. The formation of the hybrid material is demonstrated and validated through (a) synthesis process, (b) comprehensive morphological and surface characterizations, and (b) molecular dynamics simulation. Chemical bonds and surface morphology were characterized through FTIR and SEM, respectively, while its nanostructure was imaged through scanning transmission electron microscopy (STEM) and qualitatively compared with classical molecular dynamics simulations outcomes. In addition, electron energy loss spectroscopy (EELS) provided insights to chemical composition of the nanostructure where a combination of sp2 and sp3 characteristics were dominant at the interface of Gr and GC. Taken together, the characterization and simulation outcomes confirm that 5-6-, and 7-membered carbon rings formed a predominantly sp2 hybridized bond at the Gr and GC interface, contributing to the formation of a unique and novel hybrid material. The hybrid material's capability to form 3D and complex components with active functional groups together with its high charge storage capacity (56.5 & PLUSMN; 0.7 mC/cm2) and low impedance (~8.95 k omega @ 1 KHz for 300 mu m dia. microelectrode) will offer new possibilities in advanced semi-conductor devices and ultra-sensitive biochemical sensors.