Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells
The counter electrode is one of the most critical components in the dyesensitized solar cell (DSSC). It catalyzes the reduction of iodide/tri-iodide in the electrolyte, bringing the electrons from external loads connected to the cells. A conventional platinum counter electrode is extensively used...
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| Format: | Thesis |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/118469/ http://psasir.upm.edu.my/id/eprint/118469/1/118469.pdf |
| _version_ | 1848867761419190272 |
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| author | Yusuf, Yusnita |
| author_facet | Yusuf, Yusnita |
| author_sort | Yusuf, Yusnita |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The counter electrode is one of the most critical components in the dyesensitized
solar cell (DSSC). It catalyzes the reduction of iodide/tri-iodide in the
electrolyte, bringing the electrons from external loads connected to the cells. A
conventional platinum counter electrode is extensively used; however, the
concern with platinum-based is that expose to corrosion in an iodine-based
electrolyte, which affects the long-term stability of the cell. Therefore, using the
carbon-based material to replace the platinum-based in DSSC can address the
mentioned problems. This work synthesized a graphenated-carbon nanotube (g-
CNT) via the floating-catalyst chemical vapor deposition method. Then, the g-
CNT paste was prepared and deposited for the counter electrode. The
morphological results revealed that the g-CNT8 obtained 34.5 S/cm, forming a
highly conductive network due to graphene foliates at the sidewalls of CNT. This
excellent finding is due to the hybrid structure of the g-CNT8, which provides a
high defect structure that creates efficient electron transfer in the materials
resulting in higher conductivity. For the counter electrode DSSC, briefly,
GCC500 film provided good electrical conductivity of 6.28 S/cm. In addition, the
GCC500 counter electrode offered excellent catalytic activity for the
iodide/triiodide reaction. That is a significant feature in employing counter
electrodes to enhance DSSC performance. Furthermore, the DSSC-based
GCC500 exhibited 5.68 % of photovoltaic conversion energy, much higher than
platinum (3.79 %). Therefore, the GCC500 is an excellent candidate to replace
the conventional platinum as a counter electrode in DSSC. |
| first_indexed | 2025-11-15T14:41:38Z |
| format | Thesis |
| id | upm-118469 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:41:38Z |
| publishDate | 2023 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1184692025-08-04T07:45:33Z http://psasir.upm.edu.my/id/eprint/118469/ Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells Yusuf, Yusnita The counter electrode is one of the most critical components in the dyesensitized solar cell (DSSC). It catalyzes the reduction of iodide/tri-iodide in the electrolyte, bringing the electrons from external loads connected to the cells. A conventional platinum counter electrode is extensively used; however, the concern with platinum-based is that expose to corrosion in an iodine-based electrolyte, which affects the long-term stability of the cell. Therefore, using the carbon-based material to replace the platinum-based in DSSC can address the mentioned problems. This work synthesized a graphenated-carbon nanotube (g- CNT) via the floating-catalyst chemical vapor deposition method. Then, the g- CNT paste was prepared and deposited for the counter electrode. The morphological results revealed that the g-CNT8 obtained 34.5 S/cm, forming a highly conductive network due to graphene foliates at the sidewalls of CNT. This excellent finding is due to the hybrid structure of the g-CNT8, which provides a high defect structure that creates efficient electron transfer in the materials resulting in higher conductivity. For the counter electrode DSSC, briefly, GCC500 film provided good electrical conductivity of 6.28 S/cm. In addition, the GCC500 counter electrode offered excellent catalytic activity for the iodide/triiodide reaction. That is a significant feature in employing counter electrodes to enhance DSSC performance. Furthermore, the DSSC-based GCC500 exhibited 5.68 % of photovoltaic conversion energy, much higher than platinum (3.79 %). Therefore, the GCC500 is an excellent candidate to replace the conventional platinum as a counter electrode in DSSC. 2023 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/118469/1/118469.pdf Yusuf, Yusnita (2023) Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells. Doctoral thesis, Universiti Putra Malaysia. http://ethesis.upm.edu.my/id/eprint/18384 Dye-sensitized solar cells Electrodes (Electrochemistry) Carbon nanotubes |
| spellingShingle | Dye-sensitized solar cells Electrodes (Electrochemistry) Carbon nanotubes Yusuf, Yusnita Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells |
| title | Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells |
| title_full | Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells |
| title_fullStr | Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells |
| title_full_unstemmed | Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells |
| title_short | Graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells |
| title_sort | graphenated carbon nanotubes-based counter electrode for dye-sensitized solar cells |
| topic | Dye-sensitized solar cells Electrodes (Electrochemistry) Carbon nanotubes |
| url | http://psasir.upm.edu.my/id/eprint/118469/ http://psasir.upm.edu.my/id/eprint/118469/ http://psasir.upm.edu.my/id/eprint/118469/1/118469.pdf |