File Download
Supplementary
-
Citations:
- Appears in Collections:
Conference Paper: Hierachically structured mesoporous carbons as fuel cell electrode materials
Title | Hierachically structured mesoporous carbons as fuel cell electrode materials |
---|---|
Authors | |
Issue Date | 2014 |
Citation | The 2014 AIChE Annual Meeting, Atlanta, GA., 16-21 November 2014. How to Cite? |
Abstract | With a hollow core mesoporous shell geometry, porous carbon can be structured to tune surface area for reaction, nanopore diameter and length for transport, and protection of metal nanoparticles. Studies are reported for methanol oxidation and oxygen reduction using Pt and PtRu nanoparticles supported in a carbon structure composed of hollow core coated with a mesoporous shell (HCMS). The structural parameters can be tuned to study the combined effects of surface area, mesopore size, macropore size, and hierarchy of porosity. The distribution of Pt and PtRu nanoparticles in a mesoporous carbon can vary by tuning synthetic parameters and compared for activity and utilization. For methanol oxidation, the particles dispersed into a thicker shell are more stable and give better performance over time, as shown in voltage cycling and extended methanol oxidation.
Preliminary results on oxygen reduction reaction show that the HCMS structure can offer superior mass transport and a high diffusion limiting current, in addition to durability over cycles of accelerated degradation tests. |
Description | Session - Nanomaterials for Hydrogen Production and Fuel Cells II: paper 389374 |
Persistent Identifier | http://hdl.handle.net/10722/199356 |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Chan, KY | en_US |
dc.contributor.author | Yang, C | en_US |
dc.contributor.author | Zhou, M | en_US |
dc.contributor.author | Li, VCY | en_US |
dc.date.accessioned | 2014-07-22T01:15:13Z | - |
dc.date.available | 2014-07-22T01:15:13Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.citation | The 2014 AIChE Annual Meeting, Atlanta, GA., 16-21 November 2014. | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/199356 | - |
dc.description | Session - Nanomaterials for Hydrogen Production and Fuel Cells II: paper 389374 | - |
dc.description.abstract | With a hollow core mesoporous shell geometry, porous carbon can be structured to tune surface area for reaction, nanopore diameter and length for transport, and protection of metal nanoparticles. Studies are reported for methanol oxidation and oxygen reduction using Pt and PtRu nanoparticles supported in a carbon structure composed of hollow core coated with a mesoporous shell (HCMS). The structural parameters can be tuned to study the combined effects of surface area, mesopore size, macropore size, and hierarchy of porosity. The distribution of Pt and PtRu nanoparticles in a mesoporous carbon can vary by tuning synthetic parameters and compared for activity and utilization. For methanol oxidation, the particles dispersed into a thicker shell are more stable and give better performance over time, as shown in voltage cycling and extended methanol oxidation. Preliminary results on oxygen reduction reaction show that the HCMS structure can offer superior mass transport and a high diffusion limiting current, in addition to durability over cycles of accelerated degradation tests. | - |
dc.language | eng | en_US |
dc.relation.ispartof | AIChE Annual Meeting 2014 Proceedings | en_US |
dc.title | Hierachically structured mesoporous carbons as fuel cell electrode materials | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Chan, KY: hrsccky@hku.hk | en_US |
dc.identifier.email | Yang, C: chunzhen@hku.hk | en_US |
dc.identifier.email | Li, VCY: cyvli@hku.hk | en_US |
dc.identifier.authority | Chan, KY=rp00662 | en_US |
dc.description.nature | link_to_OA_fulltext | - |
dc.identifier.hkuros | 231463 | en_US |