Naslov
Development of 10 kW PEM Fuel Cell Stack with Advanced Membrane/Electrode Assemblies

Autori
Barbir, Frano ; Bahar, Bamdad ; Kolde, Jeff A.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Electrochemical&#8217 ; s Society 190th Meeting Abstracts, Vol. 96-2 / - Pennington (NJ) : The Electrochemical Society (ECS), 1996, 134-135

Skup
190th Meeting of the Electrochemical Society

Mjesto i datum
San Antonio (TX), Sjedinjene Američke Države, 06.10.1996. - 11.10.1996

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
PEM fuel cell stack; membrane-electrode assembly; water management

Sažetak
The stack consists of 50 cells with relatively large active area of 780 cm2. The main feature of the stack is the advanced membrane electrode assembly (MEA) developed by W.L. Gore & Associates, Inc. These novel MEAs have a 40  m thick composite perfluorinated polymer membrane with platinum loading of 0.3 mg/cm2 on each side. The combination of reinforcement and thinness provides high membrane conductance and improved water distribution in the operating cell. In addition, the membrane has excellent mechanical properties (particularly when it is hydrated) and dimensional stability. Nominal power output of the stack is 10 kW, but a peak of 11.4 kW has been achieved during testing. Nominal power is achieved at 410 mA/cm2 and 31.3 V (corresponding to 0.626 V/cell). The stack is capable of delivering >7 kW at cold start in less than two seconds, a feature of interest for automotive applications. Due to a very thin membrane, water back-diffusion from the cathode to the anode may be higher than the electro-osmotic drag at certain current densities. Therefore, special attention was devoted to the water management issues.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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