Preparation of conductive Si/C/N/Ni ceramic nanocomposites using phenyl-substituted polysilazane and nickelocene as precursors

In this study, a conductive Si/C/N/Ni nanocomposite was prepared using phenyl-substituted polysilazane and nickelocene (NiCp2) as precursors. Ni-related nanoparticles were uniformly distributed throughout the Si/C/N/Ni nanocomposite without aggregation because of the large number of nitrogen atoms i...

Full description

Saved in:
Bibliographic Details
Published in:Ceramics international 2022-06, Vol.48 (12), p.16576-16583
Main Authors: Jeong, Hye-Rim, Huh, Tae-Hwan, Kim, Byung Hyo, Kwark, Young-Je
Format: Article
Language:English
Subjects:
Conductive ceramic
Nanocomposite
Polysilazane
Preceramic polymer
Silicon carbonitride
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this study, a conductive Si/C/N/Ni nanocomposite was prepared using phenyl-substituted polysilazane and nickelocene (NiCp2) as precursors. Ni-related nanoparticles were uniformly distributed throughout the Si/C/N/Ni nanocomposite without aggregation because of the large number of nitrogen atoms in the silsesquiazane used as a precursor of the matrix. In addition, the nickel silicide crystalline phase and turbostratic carbon phase grew in the matrix of the Si/C/N/Ni nanocomposite at low temperatures because NiCp2 acted as a catalyst. Moreover, NiCp2 contributed to the increase in the turbostratic carbon crystallinity through the dehydrogenation reaction, resulting in an improved electrical conductivity of the Si/C/N/Ni nanocomposite. [Display omitted]
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2022.02.202