Abstract
Carbon nanotube-supported Pd catalyst (Pd/CNT) was covered with silica layers a few nanometers thick by successive hydrolysis of 3- aminopropyltriethoxysilane (APTES) and tetraethoxysilane (TEOS) to improve the durability of the Pd catalyst under cathode conditions of polymer electrolyte fuel cells (PEFCs). The coverage with silica layers resulted in the improvement of durability of Pd/CNT during the potential cycling between 0.05 and 1.20 V (vs. RHE) in aqueous HClO 4 electrolyte. The catalytic activity and durability of silica-coated Pd/CNT strongly depended on silica layer thickness in the catalysts. The coverage with thicker silica layers improved the durability of Pd/CNT but the catalytic activity of the catalysts for the oxygen reduction reaction became lower with silica layer thickness. The coverage of Pd/CNT with silica layers of ca. 3 nm thickness is preferable from a viewpoint of the catalytic activity and durability.
| Original language | English |
|---|---|
| Title of host publication | Polymer Electrolyte Fuel Cells 11 |
| Pages | 2305-2312 |
| Number of pages | 8 |
| Edition | 1 |
| DOIs | |
| Publication status | Published - Dec 1 2011 |
| Event | 11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting - Boston, MA, United States Duration: Oct 9 2011 → Oct 14 2011 |
Publication series
| Name | ECS Transactions |
|---|---|
| Number | 1 |
| Volume | 41 |
| ISSN (Print) | 1938-5862 |
| ISSN (Electronic) | 1938-6737 |
Other
| Other | 11th Polymer Electrolyte Fuel Cell Symposium, PEFC 11 - 220th ECS Meeting |
|---|---|
| Country | United States |
| City | Boston, MA |
| Period | 10/9/11 → 10/14/11 |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
Cite this
Highly durable carbon nanotube-supported Pd cathode catalysts covered with silica layers for polymer electrolyte fuel cells : Effect of silica layer thickness on the catalytic performance. / Takenaka, Sakae; Miyamoto, Hiroaki; Susuki, Naoto; Matsune, Hideki; Kishida, Masahiro.
Polymer Electrolyte Fuel Cells 11. 1. ed. 2011. p. 2305-2312 (ECS Transactions; Vol. 41, No. 1).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Highly durable carbon nanotube-supported Pd cathode catalysts covered with silica layers for polymer electrolyte fuel cells
T2 - Effect of silica layer thickness on the catalytic performance
AU - Takenaka, Sakae
AU - Miyamoto, Hiroaki
AU - Susuki, Naoto
AU - Matsune, Hideki
AU - Kishida, Masahiro
PY - 2011/12/1
Y1 - 2011/12/1
N2 - Carbon nanotube-supported Pd catalyst (Pd/CNT) was covered with silica layers a few nanometers thick by successive hydrolysis of 3- aminopropyltriethoxysilane (APTES) and tetraethoxysilane (TEOS) to improve the durability of the Pd catalyst under cathode conditions of polymer electrolyte fuel cells (PEFCs). The coverage with silica layers resulted in the improvement of durability of Pd/CNT during the potential cycling between 0.05 and 1.20 V (vs. RHE) in aqueous HClO 4 electrolyte. The catalytic activity and durability of silica-coated Pd/CNT strongly depended on silica layer thickness in the catalysts. The coverage with thicker silica layers improved the durability of Pd/CNT but the catalytic activity of the catalysts for the oxygen reduction reaction became lower with silica layer thickness. The coverage of Pd/CNT with silica layers of ca. 3 nm thickness is preferable from a viewpoint of the catalytic activity and durability.
AB - Carbon nanotube-supported Pd catalyst (Pd/CNT) was covered with silica layers a few nanometers thick by successive hydrolysis of 3- aminopropyltriethoxysilane (APTES) and tetraethoxysilane (TEOS) to improve the durability of the Pd catalyst under cathode conditions of polymer electrolyte fuel cells (PEFCs). The coverage with silica layers resulted in the improvement of durability of Pd/CNT during the potential cycling between 0.05 and 1.20 V (vs. RHE) in aqueous HClO 4 electrolyte. The catalytic activity and durability of silica-coated Pd/CNT strongly depended on silica layer thickness in the catalysts. The coverage with thicker silica layers improved the durability of Pd/CNT but the catalytic activity of the catalysts for the oxygen reduction reaction became lower with silica layer thickness. The coverage of Pd/CNT with silica layers of ca. 3 nm thickness is preferable from a viewpoint of the catalytic activity and durability.
UR - http://www.scopus.com/inward/record.url?scp=84866359315&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84866359315&partnerID=8YFLogxK
U2 - 10.1149/1.3635764
DO - 10.1149/1.3635764
M3 - Conference contribution
AN - SCOPUS:84866359315
SN - 9781607682547
T3 - ECS Transactions
SP - 2305
EP - 2312
BT - Polymer Electrolyte Fuel Cells 11
ER -