Nanofiber cathodes for low and high humidity hydrogen fuel cell operation

Wenjing Zhang, Matthew W. Brodt, Peter N. Pintauro

Research output: Contribution to journalConference articleResearchpeer-review


A new fuel cell electrode fabrication scheme based on nanofiber electrospinning has been devised and nanofiber cathode membrane-electrode- assemblies (MEAs) were evaluated in a hydrogen/air fuel cell at 80°C for low and high feed gas humidification conditions. MEAs were constructed from an electrospun mat with a fiber composition of 72 wt% Pt/C, 15 wt% poly(acrylic acid), and 13 wt% Nafion®. The Pt loading of the mat was 0.1 mg/cm 2. Mats were hot-pressed onto Nafion® 212 membranes with a decal anode (at 0.4 mgPt/cm2). Under fully humidified conditions, the nanofiber cathode MEA generated very high power densities (e.g., 485 mW/cm2 at 0.6 V vs. 345 mW/cm2 for a 0.1 mg Pt/cm2 decal cathode MEA). At lower feed gas humidities, the difference in power output for the nanofiber and decal MEAs was more pronounced, e.g., at 40% RH, the power density with the nanofiber cathode was more than double that for the decal MEA (132 mW/cm2 vs. 58 mW/cm 2 at 0.6V ). © 2011 ECS - The Electrochemical Society.
Original languageEnglish
JournalE C S Transactions
Issue number1
Pages (from-to)891-899
Publication statusPublished - 2011
Externally publishedYes
Event220th ECS Meeting - Boston, MA, United States
Duration: 9 Oct 201114 Oct 2011
Conference number: 220


Conference220th ECS Meeting
CountryUnited States
CityBoston, MA
Internet address

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