Modified pulse electrodeposition of Pt nanocatalyst as high-performance electrode for PEMFC

Low platinum loading electrode was successfully deposited by a modified pulse galvanic signal in H sub(2)PtCl sub(6) electrolyte using carbon black as support directly on a GDL (Gas Diffusion Layer). SEM images of the deposition were composed by rough Pt particles of 50 nm leading to specific electr...

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Bibliographic Details
Published in:Journal of power sources 2014-12, Vol.271, p.401-405
Main Authors: FOUDA-ONANA, F, GUILLET, N, ALMAYOUF, A. M
Format: Article
Language:English
Subjects:
Applied sciences
Cathodes
Chemistry
Deposition
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrochemistry
Electrodeposition
Electrodes
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Exchange
Fuel cells
Gas diffusion
General and physical chemistry
Membranes
Nanostructure
Platinum
Study of interfaces
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Summary:Low platinum loading electrode was successfully deposited by a modified pulse galvanic signal in H sub(2)PtCl sub(6) electrolyte using carbon black as support directly on a GDL (Gas Diffusion Layer). SEM images of the deposition were composed by rough Pt particles of 50 nm leading to specific electrochemical surface area of 53 m super(2) g super(-1). In spite of large particle size and a low cathode loading of 0.12 mg cm super(-2), the proton exchange membrane fuel cell (PEMFC) fed with humidified H sub(2) and O sub(2) at 80 [degrees]C, 1.5 absolute bar reached 0.2 mA cm super(-2) sub(pt) and 0.1 A mg super(-1) at 0.9 V sub(IR-free) which were twice higher than a reference membrane electrodes assembly (MEA) with a cathode loaded at 0.4 mg sub(pt times )cm super(-2). Such an active cathode electrode may be ascribed to a higher utilization rate of the platinum caused by an efficient catalyst deposition by electrochemical route.
ISSN:0378-7753
1873-2755
DOI:10.1016/j.jpowsour.2014.08.031