TY - JOUR
T1 - Microstructures and electrical properties of V2O5 and carbon-nanofiber composites fabricated by cold sintering process
AU - Heidary, Damoon Sohrabi Baba
AU - Guo, Jing
AU - Seo, Joo Hwan
AU - Guo, Hanzheng
AU - Rajagopalan, Ramakrishnan
AU - Randall, Clive A.
N1 - Funding Information:
This work was supported by the National Science Foundation, as part of the Center for Dielectrics and Piezoelectrics under Grant Nos. IIP-1361571 and 1361503.
Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/2
Y1 - 2018/2
N2 - 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.
AB - 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.
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U2 - 10.7567/JJAP.57.025702
DO - 10.7567/JJAP.57.025702
M3 - Article
AN - SCOPUS:85042140458
SN - 0021-4922
VL - 57
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 2
M1 - 025702
ER -