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- W2013152027 abstract "Abstract Proton‐exchange membrane fuel cells (PEMFCs) are expected to provide a complementary power supply to fossil fuels in the near future. The current reliance of fuel cells on platinum catalysts is undesirable. However, even the best‐performing non‐noble metal catalysts are not as efficient. To drive commercial viability of fuel cells forward in the short term, increased utilization of Pt catalysts is paramount. We have demonstrated improved power and energy densities in a single PEMFC using a designed cathode with a Pt loading of 0.1 mg cm −2 on a mesoporous conductive entangled carbon nanotube (CNT)‐based architecture. This electrode allows for rapid transfer of both fuel and waste to and from the electrode, respectively. Pt particles are bound tightly, directly to CNT sidewalls by a microwave‐reduction technique, which provided increased charge transport at this interface. The Pt entangled CNT cathode, in combination with an E‐TEK 0.2 mg cm −2 anode, has a maximum power and energy density of 940 mW cm −2 and 2700 mA cm −2 , respectively, and a power and energy density of 4.01 W mg Pt −1 and 6.35 A mg Pt −1 at 0.65 V. These power densities correspond to a specific mass activity of 0.81 g Pt per kW for the combined mass of both anode and cathode electrodes, approaching the current US Department of Energy efficiency target." @default.
- W2013152027 created "2016-06-24" @default.
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- W2013152027 date "2012-06-13" @default.
- W2013152027 modified "2023-10-17" @default.
- W2013152027 title "Microwave Decoration of Pt Nanoparticles on Entangled 3D Carbon Nanotube Architectures as PEM Fuel Cell Cathode" @default.
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- W2013152027 doi "https://doi.org/10.1002/cssc.201100667" @default.
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