Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells
Ternary alloy PtRuCox nanoparticles (NPs) with Co-rich core and PtRu skinned shell on carbon nanotubes (CNTs) have been successfully synthesized as electrocatalysts for methanol oxidation reaction (MOR) of direct methanol fuel cells (DMFCs) via a successive dealloying and annealing treatment of PtRu...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier Ltd
2015
|
| Online Access: | http://purl.org/au-research/grants/arc/DP150102044 http://hdl.handle.net/20.500.11937/7316 |
| _version_ | 1848745333875539968 |
|---|---|
| author | Cheng, Yi Shen, P. Saunders, M. Jiang, San Ping |
| author_facet | Cheng, Yi Shen, P. Saunders, M. Jiang, San Ping |
| author_sort | Cheng, Yi |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Ternary alloy PtRuCox nanoparticles (NPs) with Co-rich core and PtRu skinned shell on carbon nanotubes (CNTs) have been successfully synthesized as electrocatalysts for methanol oxidation reaction (MOR) of direct methanol fuel cells (DMFCs) via a successive dealloying and annealing treatment of PtRuCo alloy particles. The best results were obtained on dealloyed PtRuCox NPs annealed at 450 °C in argon with x = 0.48, characterizing by a ~1 nm thick Co-free PtRu shell. The core–shell structured PtRuCox catalysts exhibit a high activity for MOR, 400 A g−1pt measured at 0.40 V (vs Ag/AgCl), almost 4 times higher than 104 A g−1Pt for the reaction on the PtRuCo alloy before deallaying and annealing treatment. The core–shell structured PtRuCox NPs also show excellent structural stability; maintaining 74% of the activity after 1000 cycle between −0.2 to 1.0 V (vs. Ag/AgCl), significantly higher than 49% for PtRuCo and 25% for the conventional PtRu/C catalysts. The results demonstrate that the successive dealloying and annealing treatment is very effective to synthesize core–shell structured PtRuCox ternary alloy electrocatalysts with high activity and durability for DMFCs. |
| first_indexed | 2025-11-14T06:15:42Z |
| format | Journal Article |
| id | curtin-20.500.11937-7316 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:15:42Z |
| publishDate | 2015 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-73162022-10-12T07:13:34Z Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells Cheng, Yi Shen, P. Saunders, M. Jiang, San Ping Ternary alloy PtRuCox nanoparticles (NPs) with Co-rich core and PtRu skinned shell on carbon nanotubes (CNTs) have been successfully synthesized as electrocatalysts for methanol oxidation reaction (MOR) of direct methanol fuel cells (DMFCs) via a successive dealloying and annealing treatment of PtRuCo alloy particles. The best results were obtained on dealloyed PtRuCox NPs annealed at 450 °C in argon with x = 0.48, characterizing by a ~1 nm thick Co-free PtRu shell. The core–shell structured PtRuCox catalysts exhibit a high activity for MOR, 400 A g−1pt measured at 0.40 V (vs Ag/AgCl), almost 4 times higher than 104 A g−1Pt for the reaction on the PtRuCo alloy before deallaying and annealing treatment. The core–shell structured PtRuCox NPs also show excellent structural stability; maintaining 74% of the activity after 1000 cycle between −0.2 to 1.0 V (vs. Ag/AgCl), significantly higher than 49% for PtRuCo and 25% for the conventional PtRu/C catalysts. The results demonstrate that the successive dealloying and annealing treatment is very effective to synthesize core–shell structured PtRuCox ternary alloy electrocatalysts with high activity and durability for DMFCs. 2015 Journal Article http://hdl.handle.net/20.500.11937/7316 10.1016/j.electacta.2015.01.137 http://purl.org/au-research/grants/arc/DP150102044 Elsevier Ltd restricted |
| spellingShingle | Cheng, Yi Shen, P. Saunders, M. Jiang, San Ping Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells |
| title | Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells |
| title_full | Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells |
| title_fullStr | Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells |
| title_full_unstemmed | Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells |
| title_short | Core-Shell Structured PtRuCo x Nanoparticles on Carbon Nanotubes as Highly Active and Durable Electrocatalysts for Direct Methanol Fuel Cells |
| title_sort | core-shell structured ptruco x nanoparticles on carbon nanotubes as highly active and durable electrocatalysts for direct methanol fuel cells |
| url | http://purl.org/au-research/grants/arc/DP150102044 http://hdl.handle.net/20.500.11937/7316 |