Đăng nhập
 
Tìm kiếm nâng cao
 
Tên bài báo
Tác giả
Năm xuất bản
Tóm tắt
Lĩnh vực
Phân loại
Số tạp chí
 

Bản tin định kỳ
Báo cáo thường niên
Tạp chí khoa học ĐHCT
Tạp chí tiếng anh ĐHCT
Tạp chí trong nước
Tạp chí quốc tế
Kỷ yếu HN trong nước
Kỷ yếu HN quốc tế
Book chapter
Tạp chí quốc tế 2023
Số tạp chí 49(2023) Trang: 3987–4007
Tạp chí: Research on Chemical Intermediates

Abstract PtRu/C material is one of the most well-known and efficient anode catalysts in direct methanol fuel cells (DMFCs). Nevertheless, new anode catalysts with even higher performance and lower cost are indispensable for the further development of this fuel cell technology. The present study reports the synthesis and characterization of ternary alloy catalysts of Pt1Ru1Mx (M = Fe, Co, Ni; x = 1, 3)/C-MWCNTs and Pt1Ru1Coy (y = 0, 0.5, 1, 2, 3, 4)/C-MWCNTs to optimize the material composition toward the enhanced methanol oxidation activity and improved CO tolerance for DMFCs. With fixing the atomic ratio of Pt:Ru = 1:1 and carbon Vulcan – multi-walled carbon nanotubes (C-MWCNTs) composite support with mass ratio C:MWCNTs = 7:3, the designed catalysts changed the third metal M (Fe, Co, Ni) and the Co atomic composition. The electrochemical study showed that all the Pt1Ru1Mx (M = Fe, Co, Ni; x = 1, 3)/C-MWCNTs ternary catalysts presented significantly higher methanol oxidation activity over the corresponding Pt1Ru1/C-MWCNTs binary alloy. Remarkably, the catalytic performance of ternary metal nanoparticles on the C-MWCNTs support was PtRuCo/C-MWCNTs > PtRuNi/C-MWCNTs > PtRuFe/C-MWCNTs, the electron transfer resistance of those was PtRuCo/C-MWCNTs < PtRuNi/C-MWCNTs < PtRuFe/C-MWCNTs, but the resistance to CO poisoning was PtRuFe/C-MWCNTs > PtRuCo/C-MWCNTs > PtRuNi/C-MWCNTs. Since Co exhibited as the best additional metal over Fe and Ni for both x = 1 and 3, the Pt1Ru1Coy (y = 0, 0.5, 1, 2, 3, 4)/C-MWCNTs were studied in detail. As a result, the Co content greatly affected the methanol oxidation efficiency, in which Pt1Ru1Co2/C-MWCNTs revealed the highest value of current density (jf = 227.4 mA/mgPtRu) and the smallest electron transfer resistance (Ret = 2.76 Ω cm2). Moreover, all the catalyst systems displayed strong tolerance for CO poisoning because of the small reverse anodic current density. Particularly, Pt1Ru1Co2/C-MWCNTs catalyst exhibited not only the highest methanol oxidation ability but also the lowest electron transfer resistance, which is suitable for use in DMFCs anode electrodes.

Các bài báo khác
Số tạp chí 14(2023) Trang: 309-321
Tạp chí: International Journal of Environmental Science and Development
Số tạp chí 14(2023) Trang: 234-244
Tạp chí: International Journal of Environmental Science and Development
Số tạp chí 14(2023) Trang: 202-211
Tạp chí: International Journal of Environmental Science and Development
Số tạp chí 1(2023) Trang: 1-17
Tạp chí: International Journal of Data Science and Analytics
Số tạp chí 18(2023) Trang: 257–266
Tạp chí: Model Assisted Statistics and Applications
Số tạp chí 14(2023) Trang: 83-90
Tạp chí: International Journal of Environmental Science and Development
Số tạp chí 14(2023) Trang: 14-21
Tạp chí: International Journal of Environmental Science and Development
Số tạp chí 24(2023) Trang: 1-14
Tạp chí: Ecological Engineering and Environmental Technology
Số tạp chí 7(2023) Trang: 47-55
Tạp chí: Indonesian Journal of Environmental Management and Sustainability
Số tạp chí 5(2023) Trang: 13-25
Tạp chí: JOURNAL OF ENERGY TECHNOLOGY AND ENVIRONMENT
Số tạp chí 5(2023) Trang: 33-43
Tạp chí: NIPES JOURNAL OF SCIENCE AND TECHNOLOGY RESEARCH
Số tạp chí 5(2023) Trang: 44-52
Tạp chí: NIPES JOURNAL OF SCIENCE AND TECHNOLOGY RESEARCH
Số tạp chí 5(2023) Trang: 95-103
Tạp chí: JOURNAL OF ENERGY TECHNOLOGY AND ENVIRONMENT
Số tạp chí 5(2023) Trang: 103-110
Tạp chí: JOURNAL OF ENERGY TECHNOLOGY AND ENVIRONMENT
Số tạp chí 5(2023) Trang: 105 – 114
Tạp chí: JOURNAL OF ENERGY TECHNOLOGY AND ENVIRONMENT
Số tạp chí 5(2023) Trang: 96 – 104
Tạp chí: JOURNAL OF ENERGY TECHNOLOGY AND ENVIRONMENT
Số tạp chí 5(2023) Trang: 17-24
Tạp chí: JOURNAL OF ENERGY TECHNOLOGY AND ENVIRONMENT
Số tạp chí 9(2023) Trang: 1-6
Tạp chí: EAI Endorsed Transactions on Internet of Things
Số tạp chí 21(2023) Trang: 113-1120
Tạp chí: TELKOMNIKA Telecommunication Computing Electronics and Control
Số tạp chí 39(2023) Trang: 15-23
Tạp chí: VNU Journal of Science: Mathematics – Physics


Vietnamese | English






 
 
Vui lòng chờ...