Synthesis, characterisation and application of organic nanowires
Thermoelectric materials provide a potential solution for an alternative energy source. On top of generating electricity, thermoelectric materials can also be used to provide a cooling effect as well. Organic thermoelectric materials have many advantages over their inorganic counterpart, such as fle...
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| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2014
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| Online Access: | http://hdl.handle.net/10356/55805 |
| _version_ | 1811685241743474688 |
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| author | Lee, Daryl Weilun |
| author2 | School of Materials Science and Engineering |
| author_facet | School of Materials Science and Engineering Lee, Daryl Weilun |
| author_sort | Lee, Daryl Weilun |
| collection | NTU |
| description | Thermoelectric materials provide a potential solution for an alternative energy source. On top of generating electricity, thermoelectric materials can also be used to provide a cooling effect as well. Organic thermoelectric materials have many advantages over their inorganic counterpart, such as flexibility and weight. Although current organic thermoelectric materials have much lower efficiencies, high values have been predicted using a quasi-one dimensional physical model. The objective of this project is to determine the dopants and morphologies which enhance the efficiency of organic thermoelectric materials. Polyaniline nanowires and polypyrrole nanotubes were synthesised and doped with acetic acid, hydrochloric acid and p-toluenesulfonic acid. The thermoelectric properties, which consist of electrical conductivity, Seebeck coefficient and thermal conductivity, were tested using appropriate equipment. The thermoelectric figure of merit, ZT, was then calculated and compared. Results show that for polyaniline nanowires, the highest value of ZT was attained when doped with 0.5 M p-toluenesulfonic acid. For polypyrrole nanotubes, the highest value of ZT at room temperature was obtained when doped with 0.5 M HCl. Polyaniline nanorods and nanowires were also compared, which showed that the nanowires had a ZT value 5 times greater than the nanorods. |
| first_indexed | 2024-10-01T04:41:24Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/55805 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:41:24Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/558052023-03-04T15:42:53Z Synthesis, characterisation and application of organic nanowires Lee, Daryl Weilun School of Materials Science and Engineering Zhang Qichun DRNTU::Engineering::Materials::Nanostructured materials Thermoelectric materials provide a potential solution for an alternative energy source. On top of generating electricity, thermoelectric materials can also be used to provide a cooling effect as well. Organic thermoelectric materials have many advantages over their inorganic counterpart, such as flexibility and weight. Although current organic thermoelectric materials have much lower efficiencies, high values have been predicted using a quasi-one dimensional physical model. The objective of this project is to determine the dopants and morphologies which enhance the efficiency of organic thermoelectric materials. Polyaniline nanowires and polypyrrole nanotubes were synthesised and doped with acetic acid, hydrochloric acid and p-toluenesulfonic acid. The thermoelectric properties, which consist of electrical conductivity, Seebeck coefficient and thermal conductivity, were tested using appropriate equipment. The thermoelectric figure of merit, ZT, was then calculated and compared. Results show that for polyaniline nanowires, the highest value of ZT was attained when doped with 0.5 M p-toluenesulfonic acid. For polypyrrole nanotubes, the highest value of ZT at room temperature was obtained when doped with 0.5 M HCl. Polyaniline nanorods and nanowires were also compared, which showed that the nanowires had a ZT value 5 times greater than the nanorods. Bachelor of Engineering (Materials Engineering) 2014-03-31T07:36:33Z 2014-03-31T07:36:33Z 2014 2014 Final Year Project (FYP) http://hdl.handle.net/10356/55805 en Nanyang Technological University 33 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Nanostructured materials Lee, Daryl Weilun Synthesis, characterisation and application of organic nanowires |
| title | Synthesis, characterisation and application of organic nanowires |
| title_full | Synthesis, characterisation and application of organic nanowires |
| title_fullStr | Synthesis, characterisation and application of organic nanowires |
| title_full_unstemmed | Synthesis, characterisation and application of organic nanowires |
| title_short | Synthesis, characterisation and application of organic nanowires |
| title_sort | synthesis characterisation and application of organic nanowires |
| topic | DRNTU::Engineering::Materials::Nanostructured materials |
| url | http://hdl.handle.net/10356/55805 |
| work_keys_str_mv | AT leedarylweilun synthesischaracterisationandapplicationoforganicnanowires |