Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content

Effects of adding excess antimony during the polyol process for synthesizing CoSb3 compound have been studied in this project. It was found that with an initial atomic ratio Co:Sb = 1:4.5, the final sample after hot press contained a single CoSb3 phase. With higher initial Sb levels, extra free Sb p...

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Main Author: Wu, Zhenqi.
Other Authors: Hng Huey Hoon
Format: Final Year Project
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/15332
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-153322023-03-04T15:41:31Z Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content Wu, Zhenqi. Hng Huey Hoon School of Materials Science and Engineering DRNTU::Engineering::Materials Effects of adding excess antimony during the polyol process for synthesizing CoSb3 compound have been studied in this project. It was found that with an initial atomic ratio Co:Sb = 1:4.5, the final sample after hot press contained a single CoSb3 phase. With higher initial Sb levels, extra free Sb phase approved in the final products as impurity. With increasing Sb atomic fraction, Seebeck coefficients of the sample was improved. However, the electrical resistivity values increased to a larger extent. As a result, excess Sb gave rise to lower power factor, and hence resulting in poorer thermoelectric performance. Bachelor of Engineering (Materials Engineering) 2009-04-27T08:27:55Z 2009-04-27T08:27:55Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/15332 en 47 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Materials
spellingShingle DRNTU::Engineering::Materials
Wu, Zhenqi.
Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content
description Effects of adding excess antimony during the polyol process for synthesizing CoSb3 compound have been studied in this project. It was found that with an initial atomic ratio Co:Sb = 1:4.5, the final sample after hot press contained a single CoSb3 phase. With higher initial Sb levels, extra free Sb phase approved in the final products as impurity. With increasing Sb atomic fraction, Seebeck coefficients of the sample was improved. However, the electrical resistivity values increased to a larger extent. As a result, excess Sb gave rise to lower power factor, and hence resulting in poorer thermoelectric performance.
author2 Hng Huey Hoon
author_facet Hng Huey Hoon
Wu, Zhenqi.
format Final Year Project
author Wu, Zhenqi.
author_sort Wu, Zhenqi.
title Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content
title_short Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content
title_full Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content
title_fullStr Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content
title_full_unstemmed Synthesis and characterization of pure CoSb3 nanoparticles of different Sb content
title_sort synthesis and characterization of pure cosb3 nanoparticles of different sb content
publishDate 2009
url http://hdl.handle.net/10356/15332
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