Highly stable PtRuTiOx/C anode electrocatalyst for direct methanol fuel cells |
| |
| Institution: | 1. Direct Alcohol Fuel Cell Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;2. Graduate School of the Chinese Academy of Science, Beijing 100039, China;3. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;1. University of Chemical Technology and Metallurgy, 8 “K. Ohridski”, Sofia 1756, Bulgaria;2. University of Mining and Geology “St. Ivan Rilski”, Sofia, Bulgaria;1. Department of Chemistry, Georgia Southern University, 250 Forest Drive, Statesboro, GA, 30460, USA;2. Energy and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;3. Chemical Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;1. Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000, Ljubljana, Slovenia;2. Department for Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia;3. Analytical Chemistry Laboratory, National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia;4. Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000, Ljubljana, Slovenia;5. Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia |
| |
| Abstract: | In the present investigation, PtRuTiOx/C electrocatalyst was prepared by a modified polyol synthesis method and the as-prepared electrocatalyst was treated under the reductive atmosphere (30 vol% H2 in Ar) at 500 °C for 2 h (denoted as PtRuTiOx/C-500) to enhance the interaction between the metal particles and the support. For comparison, the commercial PtRu/C electrocatalyst was also treated by the same procedure as PtRuTiOx/C (denoted as PtRu/C-500). Transmission electron microscopy results indicated that PtRuTiOx/C electrocatalyst exhibited not only a uniform dispersion and narrow size distribution with a smaller particle size, but also excellent stability during the thermal treatment. In contrast, the commercial PtRu/C electrocatalyst is not stable during the thermal treatment and the metal particles greatly agglomerated. The results of CO-stripping voltammetry, single direct methanol fuel cell tests and life-time test jointly showed that PtRuTiOx/C-500 had better durability than commercial PtRu/C while keeping a desirable activity toward methanol electro-oxidation, which may be attributed to the addition of titanium oxide that improved the interaction between noble metal particles and the support. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
