4.8 Article

Efficient and durable gas diffusion electrode for proton exchange membrane fuel cell via in-situ growth of Pt nanowires on dual microporous layer

Journal

JOURNAL OF POWER SOURCES
Volume 525, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.jpowsour.2022.231153

Keywords

PEM fuel cell; Gas diffusion electrode; Pt-nanowires; Catalyst layer; Membrane electrode assembly

Funding

  1. National Key Research and Development Program of China [2018YFE0121200]
  2. National Natural Science Foundation of China [21676126]
  3. Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions
  4. Research Fund Program of Key Laboratory of Fuel Cell Technology of Guangdong Province

Ask authors/readers for more resources

A facile and universal strategy of in-situ growing Pt nanowires on a dual microporous layer (MPL) as a novel catalyst layer (CL) for proton exchange membrane fuel cells (PEMFCs) is proposed in this study. The effect of dual MPL structure on PEMFCs performance is investigated, showing significantly improved power output and durability.
Catalyst layer (CL) is the key factor of affecting the performance of proton exchange membrane fuel cells (PEMFCs). Herein, a facile and universal strategy is proposed to in situ grow Pt nanowires (Pt-NWs) on a dual microporous layer (MPL) as a novel CL for PEMFCs application. The dual MPL is composed of hydrophobic layer and hydrophilic layer, where the former facilitates mass transport and the latter favors the in-situ growth of PtNWs. During the whole preparation, only formic acid is used as reducing agent, no surfactants or templates are involved. The as-prepared Pt-NWs are uniformly grown on the surface of carbon particles to form a unique CL. The effect of dual MPL structure on PEMFCs performance is investigated, by which an optimal carbon powder content ratio (4:1) between hydrophobic layer and hydrophilic layer is determined. The single cell tests reveal that the Pt-specific power of the resultant MEA with 0.108 mg cm(-2) Pt-NWs is up to 7.23 W mg(-1), about twice higher than that for commercial Pt/C MEA with 0.2 mg cm(-2) Pt loading. Furthermore, the resulted GDE shows enhanced durability compared to commercial one, indicating the good potential of in-situ prepared Pt-NWs electrode for practical PEMFC applications.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.8
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available