Work

Effect of Annealing on Virgin and Recycled Carbon Fibre Electrochemically-deposited with N-type Bismuth Telluride

Year: 2015

Type: article

Abstract: N-type thermoelectric bismuth telluride (Bi2Te3) was deposited on virgin carbon fibre (VCF) and recycled carbon fibre (RCF) substrates by electro-deposition. The effects of annealing on the surface morphology and the Seebeck coefficient of the Bi2Te3 films were investigated. A nearly stoichiometric N-type Bi2Te3 was obtained from an electrolyte of 8 mM of Bi(NO3)3.5H2O and 10mM of TeO2, which exhibited the highest Seebeck coefficient of -20.1 µV/K and -13.0 µV/K for VCF and RCF individually. The effect of varying annealing temperature (548.15 K and 623.15 K) and annealing time (2 and 3 h) was carried out only on nearly stoichiometric N-type Bi2Te3 that revealed improvement in Seebeck coefficient up to 1.51 times and 1.24 times for VCF and RCF at 623.15 K for 2 h.

Source: Chemical engineering transactions

DOI: 10.3303/cet1545240

Authors: Priyanka Jagadish, P.L. Lau, Andy Chan, Muhammad Kamran Siddiqui

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $545

OpenAlex ID: W2623479329