Enhancing the durability of multi-walled carbon nanotube supported by Pt and Pt–Pd nanoparticles in gas diffusion electrodes
| Autor: | Mehdi Asgari, Ahmad Nozad Golikand, Elaheh Lohrasbi |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Gas diffusion electrode Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology Nanoparticle chemistry.chemical_element Nanotechnology Carbon nanotube Condensed Matter Physics Electrocatalyst Durability Corrosion law.invention Fuel Technology chemistry Chemical engineering law Platinum Bimetallic strip |
| Zdroj: | International Journal of Hydrogen Energy. 35:9233-9240 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2010.02.052 |
| Popis: | This work tries to improve the durability of electrocatalysts of gas diffusion electrodes (GDEs) by using multi-walled carbon nanotube supported Pt–Pd bimetallic (Pt–Pd/MWCNT). The durability investigation of multi-walled carbon nanotube supported metals was evaluated by a repetitive potential cycling (RPC) corrosion test and by extended constant potential (ECP) experiments. Potential cycling tests were performed from −0.3 to 1.2 V at 50 mV s −1 in 1 mol L −1 H 2 SO 4 . Extended constant potential (ECP) durability test were also carried out on the GDEs by 30 h of constant potential operation at 0.8 V vs. Ag/AgCl. The smaller performance loss was observed on the GDE using Pt–Pd/MWCNT as electrocatalyst compared with GDE using Pt/MWCNT during both durability tests. ICP analysis also suggests that the dissolution of Pt nanoparticles from the carbon nanotube surface is hindered when Pd is present. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect