| Title | Au Nanoparticles Modified with Pt, Ru and SnO(2)as Electrocatalysts for Ethanol Oxidation Reaction in Acids |
| Authors | Siddharth, Kumar Xing, Zelong Xiao, Fei Zhu, Shangqian Zhang, Lili Pan, Feng Shao, Minhua |
| Affiliation | Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Kowloon, Clear Water Bay, Hong Kong, Peoples R China Huaiyin Normal Univ, Jiangsu Key Lab Chem Low Dimens Mat, Huaian 223300, Jiangsu, Peoples R China Peking Univ, Shenzhen Grad Sch, Sch Adv Mat, Shenzhen, Peoples R China |
| Keywords | CORE-SHELL CATALYTIC-ACTIVITY PLATINUM ELECTROOXIDATION MONOLAYER DEPOSITION PD MECHANISM SURFACE STRAIN |
| Issue Date | Jun-2020 |
| Publisher | CHEMISTRY-AN ASIAN JOURNAL |
| Abstract | The anodic reaction in direct ethanol fuel cells (DEFCs), ethanol oxidation reaction (EOR) faces challenges, such as incomplete electrooxidation of ethanol and high cost of the most efficient electrocatalyst, Pt in acidic media at low temperature. In this study, core-shell electrocatalysts with an Au core and Pt-based shell (Au@Pt) are developed. The Au core size and Pt shell thickness play an important role in the EOR activity. The Au size of 2.8 nm and one layer of Pt provide the most optimized performance, having 6 times higher peak current density in contrast to commercial Pt/C. SnO(2)as a support also enhances the EOR activity of Au@Pt by 1.73 times. Further modifying the Pt shell with Ru atoms achieve the highest EOR current density that is 15 and 2.5 times of Pt/C and Au@Pt. Our results suggest the importance of surface modification in rational design of advanced electrocatalysts. |
| URI | http://hdl.handle.net/20.500.11897/607065 |
| ISSN | 1861-4728 |
| DOI | 10.1002/asia.202000336 |
| Indexed | SCI(E) |
| Appears in Collections: | 深圳研究生院待认领 |
