Electrohemical synthesis of high active palladium-based catalysts for fuel cell
This thesis presents a facile and simple stepwise electroless deposition method for the synthesis of palladium nanoparticles for fuel cell application. The palladium nanoparticles synthesized by the proposed method exhibited high specific and mass activity for both oxygen reduction reaction an...
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
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2017
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| Online Access: | http://hdl.handle.net/10356/72762 |
| _version_ | 1811682344275279872 |
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| author | Poon, Kee Chun |
| author2 | Hirotaka Sato |
| author_facet | Hirotaka Sato Poon, Kee Chun |
| author_sort | Poon, Kee Chun |
| collection | NTU |
| description | This thesis presents a facile and simple stepwise electroless deposition method for the
synthesis of palladium nanoparticles for fuel cell application. The palladium
nanoparticles synthesized by the proposed method exhibited high specific and mass
activity for both oxygen reduction reaction and formic acid oxidation compared to
commercial platinum and palladium loaded carbon. In particular, the amorphous
palladium-phosphorus nanoparticles exhibited the highest specific and mass activity
reported in literature so far. For oxygen reduction reaction, the palladium-phosphorus
nanoparticles had a specific and mass activity of 6.85 mA cm-2 and 2.21 mA µg-1
respectively which were 4.5 and 2.6 times greater than previously reported values.
Furthermore for formic acid oxidation, the palladium-phosphorus nanoparticles had a
specific and mass activity of 5.7 mA cm-2 and 2.9 mA µg-1 respectively which were
also higher than any previously reported literature values. The palladium nanoparticles
where also shown to be more durable than commercial platinum and palladium loaded
carbon. Furthermore, the palladium nanoparticles synthesized by the proposed method
were also demonstrated to be industrial applicable. Lastly, the proposed synthesis
method was also implemented in coating carbon nanotubes with palladium
nanoparticles to make a palladium nanoparticles-carbon nanotubes composite. This
palladium nanoparticles-carbon nanotubes composite was shown to be able to increase
the catalytic and mass activity of bilirubin oxidase in oxygen reduction reaction
compared to carbon nanotubes alone. Furthermore, this palladium nanoparticles-
carbon nanotubes composite was also demonstrated to be able to increase the electron
transfer rate between the bilirubin oxidase and the electrode (99.2 s-1 to 169.4 s-1). |
| first_indexed | 2024-10-01T03:55:21Z |
| format | Thesis |
| id | ntu-10356/72762 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:55:21Z |
| publishDate | 2017 |
| record_format | dspace |
| spelling | ntu-10356/727622023-03-11T18:05:59Z Electrohemical synthesis of high active palladium-based catalysts for fuel cell Poon, Kee Chun Hirotaka Sato School of Mechanical and Aerospace Engineering DRNTU::Science::Chemistry This thesis presents a facile and simple stepwise electroless deposition method for the synthesis of palladium nanoparticles for fuel cell application. The palladium nanoparticles synthesized by the proposed method exhibited high specific and mass activity for both oxygen reduction reaction and formic acid oxidation compared to commercial platinum and palladium loaded carbon. In particular, the amorphous palladium-phosphorus nanoparticles exhibited the highest specific and mass activity reported in literature so far. For oxygen reduction reaction, the palladium-phosphorus nanoparticles had a specific and mass activity of 6.85 mA cm-2 and 2.21 mA µg-1 respectively which were 4.5 and 2.6 times greater than previously reported values. Furthermore for formic acid oxidation, the palladium-phosphorus nanoparticles had a specific and mass activity of 5.7 mA cm-2 and 2.9 mA µg-1 respectively which were also higher than any previously reported literature values. The palladium nanoparticles where also shown to be more durable than commercial platinum and palladium loaded carbon. Furthermore, the palladium nanoparticles synthesized by the proposed method were also demonstrated to be industrial applicable. Lastly, the proposed synthesis method was also implemented in coating carbon nanotubes with palladium nanoparticles to make a palladium nanoparticles-carbon nanotubes composite. This palladium nanoparticles-carbon nanotubes composite was shown to be able to increase the catalytic and mass activity of bilirubin oxidase in oxygen reduction reaction compared to carbon nanotubes alone. Furthermore, this palladium nanoparticles- carbon nanotubes composite was also demonstrated to be able to increase the electron transfer rate between the bilirubin oxidase and the electrode (99.2 s-1 to 169.4 s-1). Doctor of Philosophy (MAE) 2017-11-11T02:03:27Z 2017-11-11T02:03:27Z 2017 Thesis Poon, K. C. (2017). Electrohemical synthesis of high active palladium-based catalysts for fuel cell. Doctoral thesis, Nanyang Technological University, Singapore. http://hdl.handle.net/10356/72762 10.32657/10356/72762 en 105 p. application/pdf |
| spellingShingle | DRNTU::Science::Chemistry Poon, Kee Chun Electrohemical synthesis of high active palladium-based catalysts for fuel cell |
| title | Electrohemical synthesis of high active palladium-based catalysts for fuel cell |
| title_full | Electrohemical synthesis of high active palladium-based catalysts for fuel cell |
| title_fullStr | Electrohemical synthesis of high active palladium-based catalysts for fuel cell |
| title_full_unstemmed | Electrohemical synthesis of high active palladium-based catalysts for fuel cell |
| title_short | Electrohemical synthesis of high active palladium-based catalysts for fuel cell |
| title_sort | electrohemical synthesis of high active palladium based catalysts for fuel cell |
| topic | DRNTU::Science::Chemistry |
| url | http://hdl.handle.net/10356/72762 |
| work_keys_str_mv | AT poonkeechun electrohemicalsynthesisofhighactivepalladiumbasedcatalystsforfuelcell |