Under actual fuel cell electric vehicle operation with various harsh conditions, polymer electrolyte membrane fuel cells exhibit significantly reduced performance owing to the carbon support corrosion. To overcome these limitations, this study used WO3 as an anode catalyst support. Tungsten oxide can supply additional hydrogen ions and electrons via the decomposition of tungsten bronze (HxWO3) produced by the hydrogen spillover effect. Furthermore, HxWO3 also stabilizes the cell potential by scavenging oxygen infiltrated into the anode during start-up/shut-down situations. However, the initial performance degradation can be induced by the low electrical conductivity of the metal oxide. To compensate for this, Ar plasma surface treatment was performed on the WO3 layer, and Pt nanoparticles were formed through atomic layer deposition to manufacture an extremely robust anode catalyst. Ultimately, it showed noticeably enhanced durability in diverse operating conditions compared to the commercial Pt/C and even displayed the effect as a reversal-tolerant anode.
Bibliographical noteFunding Information:
This work was supported by a National Research foundation of Korea (NRF, NRF- 2019R1A2C2003054 and 2021M3I3A1084842 ) / a Korea institute of Energy Technology Evaluation and Planning (KETEP, 20213030030040 ) / Samsung Electronics.
© 2023 Elsevier B.V.
- Atomic layer deposition
- FCEV driving conditions
- PEMFC catalyst support
- Reversal-tolerant anode
- Tungsten oxide
ASJC Scopus subject areas
- General Environmental Science
- Process Chemistry and Technology