Microstructures and electrical properties of V2O5 and carbon-nanofiber composites fabricated by cold sintering process

Damoon Sohrabi Baba Heidary, Jing Guo, Joo Hwan Seo, Hanzheng Guo, Ramakrishnan Rajagopalan, Clive A. Randall

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The ability to apply a low temperature sintering technique, so called cold sintering process, was employed to fabricate V2O5 ceramic and carbon nanofiber (CNF) composites. The densities, microstructures, as well as electrical and electrochemical properties of (1 - x)V2O5-xCNF composites cold sintered at a temperature of 120 °C for a time of 20 min were investigated. All the samples can be sintered to >85% theoretical densities by cold sintering process. There is a limited grain growth in the cold sintered (1 - x)V2O5-xCNF composites. A small amount of V2O5 amorphous phase can be observed and most of the CNFs are distributed along the grain boundaries of V2O5 ceramic. With increasing the amount of CNFs, the electrical (electrical conductivity) and electrochemical (capacity) properties of (1 - x)V2O5-xCNF composites improve accordingly.

Original languageEnglish (US)
Article number025702
JournalJapanese Journal of Applied Physics
Volume57
Issue number2
DOIs
StatePublished - Feb 2018

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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