TY  - JOUR
AU  - Tao, Aining
AU  - Yuan, Qiang
AU  - Dong, Kaiyu
AU  - Nie, Siyang
AU  - Wang, Xun
PY  - 2026
TI  - Electron-rich Pt active sites enable efficient complete dehydrogenation electrooxidation of formic acid on Pt/Ag@Bi2Te3 triple-phase heterointerfaces
JO  - Nano Research
SN  - 1998-0124
SP  - 94908677
VL  - 19
IS  - 8
AB  - Realizing the dehydrogenation direct pathway of formic acid electrooxidation reaction (FAOR) via sequential dehydrogenation steps is crucial for direct formic acid proton exchange membrane fuel cells (DFAPEMFCs). Herein, a two-dimensional porous Pt/Ag@Bi2Te3 electrocatalyst featuring a triple-phase heterointerface is prepared via a visible light-induced strategy. The heterointerface effect and metal–support effect endow the Pt active sites with local electron-rich properties, thereby facilitating attack on the H atom of H–COO–H to cleave the C–H and O–H bonds and realize the direct pathway. The Pt/Ag@Bi2Te3 demonstrates remarkable FAOR mass and specific activities of 10.7 A·mgPt–1 and 45.46 mA·cm–2, outperforming commercial Pt/C by factors of 21.8 and 11.4, respectively. In the practical DFAPEMFC device, the Pt/Ag@Bi2Te3 delivers a peak power density of 116.2 mW·cm–2, indicating its application potential. Density functional theory calculations further confirm the electron-rich Pt active sites and higher energy efficiency for the complete dehydrogenation direct pathway. This study provides a new strategy for preparing highly efficient FAOR catalysts for actual DFAPEMFCs.
UR  - https://doi.org/10.26599/NR.2026.94908677
DO  - 10.26599/NR.2026.94908677