TY - JOUR
T1 - Structural modulation of carbon-confined Pt-based catalysts with high-dispersed controllable tri-heterointerface and their MOR performance
AU - Wang, Tong
AU - Yu, Yunqi
AU - Jiang, Xun
AU - Askarov, Shokhrukhbek
AU - Khan, Salman
AU - Wu, Qin
AU - Zhang, Yaoyuan
AU - Chen, Kangcheng
AU - Shi, Daxin
AU - Zhang, Fang
AU - Li, Hansheng
N1 - Publisher Copyright:
© 2025 Hydrogen Energy Publications LLC
PY - 2025/3/6
Y1 - 2025/3/6
N2 - The development of carbon-supported Pt-based electrocatalysts that exhibit low Pt usage, high electrocatalytic activity, exceptional stability, and robust toxicity resistance is pivotal for the widespread adoption of Direct Methanol Fuel Cells (DMFCs). In this study, we successfully prepared porous carbon-supported Pt-based catalysts, PtCoFe-CoFeOx@NPC, featuring carbon-confined with controllable tri-heterointerface through a process involving high-temperature induced phase migration and chemical replacement. Under the optimal conditions, the catalyst PtCoFe-CoFeOx@NPC for methanol oxidation reaction exhibits the catalytic activity of 960 mA·mgPt−1, which is 3.7 times that of commercial Pt/C (255 mA·mgPt−1) and 1.9 times that of commercial PtRu/C (506 mA·mgPt−1). The alloyed active centers improve the catalytic activity towards MOR. The controlled tri-heterointerfaces rapidly release Pt active sites, increasing the electron transfer rate, and significantly enhancing MOR activity. The carbon-confined structure achieved high dispersion of active centers and effectively prevented Pt loss, improving catalytic activity and stability. These advantages synergistically improve the MOR performance of Pt-based catalysts.
AB - The development of carbon-supported Pt-based electrocatalysts that exhibit low Pt usage, high electrocatalytic activity, exceptional stability, and robust toxicity resistance is pivotal for the widespread adoption of Direct Methanol Fuel Cells (DMFCs). In this study, we successfully prepared porous carbon-supported Pt-based catalysts, PtCoFe-CoFeOx@NPC, featuring carbon-confined with controllable tri-heterointerface through a process involving high-temperature induced phase migration and chemical replacement. Under the optimal conditions, the catalyst PtCoFe-CoFeOx@NPC for methanol oxidation reaction exhibits the catalytic activity of 960 mA·mgPt−1, which is 3.7 times that of commercial Pt/C (255 mA·mgPt−1) and 1.9 times that of commercial PtRu/C (506 mA·mgPt−1). The alloyed active centers improve the catalytic activity towards MOR. The controlled tri-heterointerfaces rapidly release Pt active sites, increasing the electron transfer rate, and significantly enhancing MOR activity. The carbon-confined structure achieved high dispersion of active centers and effectively prevented Pt loss, improving catalytic activity and stability. These advantages synergistically improve the MOR performance of Pt-based catalysts.
KW - Carbon-confined
KW - Methanol oxidation
KW - Pt-based catalysts
KW - Tri-heterointerface
UR - http://www.scopus.com/inward/record.url?scp=85216928164&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2025.02.058
DO - 10.1016/j.ijhydene.2025.02.058
M3 - Article
AN - SCOPUS:85216928164
SN - 0360-3199
VL - 106
SP - 1016
EP - 1028
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
ER -
