High‐Performance Nanofiber Fuel Cell Electrodes

Zhang, Wenjing; Pintauro, Peter N.

doi:10.1002/cssc.201100245

Cited by 112 publications

(109 citation statements)

References 34 publications

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“…Increasing the specific catalytic activity allows for a reduction in the amount of platinum used, thus improving material efficiency over the conventional catalyst. In addition to the various nanomorphologies, research using different assembly methods, such as electrospraying, improve catalytic activity by influencing the hierarchical structure of the electrode 137,138 . Similarly, platinum alloys with nickel [139][140][141] , cobalt 140,142 and copper 143,144 have also demonstrated good performance while decreasing platinum use.…”

Section: Cathode Catalystsmentioning

confidence: 99%

Nanotechnology for environmentally sustainable electromobility

et al. 2016

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Electric vehicles (EVs) powered by lithium ion batteries (LIBs) or proton exchange membrane hydrogen fuel cells (PEMFCs) offer important potential climate change mitigation effects when combined with clean energy sources. The development of novel nanomaterials may bring about the next wave of technical improvements for LIBs and PEMFCs. If the next generation of EVs is to lead to not only reduced emissions during use but also environmentally sustainable production chains, the research on nanomaterials for LIBs and PEMFCs should be guided by a lifecycle perspective. In this Review, we describe an environmental lifecycle screening framework tailored to assess nanomaterials for electromobility. By applying this framework, we offer an early evaluation of the most promising nanomaterials for LIBs and PEMFCs and their potential contributions to the environmental sustainability of EV lifecycles. Potential environmental trade-offs and gaps in nanomaterials research are identified to provide guidance for future nanomaterial developments for electromobility.

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Section: Cathode Catalystsmentioning

confidence: 99%

Nanotechnology for environmentally sustainable electromobility

et al. 2016

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“…Up to now several approaches have been pursued to achieve acceptable power densities with low Pt-loadings [2,[4][5][6][7]. A high Ptutilization efficiency of 20 kW/g Pt was reported by Martin et al using electrosprayed catalyst layers (CLs) with an ultra-low cathode loading of 0.012 mg/cm 2 [8].…”

Section: Introductionmentioning

confidence: 96%

Improved Pt-utilization efficiency of low Pt-loading PEM fuel cell electrodes using direct membrane deposition

Breitwieser

Klingele

Britton

et al. 2015

Electrochemistry Communications

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Direct membrane deposition was used to produce record platinum catalyst utilization efficiency polymer electrolyte membrane fuel cells. The novel membrane fabrication technique was applied to gas diffusion electrodes with low Pt-loadings of 0.102 and 0.029 mg/cm 2 . Under oxygen atmosphere and 300 kPa abs total pressure, 88 kW/g Pt cathodic catalyst utilization efficiency with a symmetrical Pt-loading of 0.029 mg/cm 2 on the anode and cathode side was achieved. This is 2.3 times higher than the Pt-utilization efficiency of a reference fuel cell prepared using a commercial Nafion N-211 membrane and identical catalyst layers, emphasizing that the improvement is purely attributable to the novel membrane fabrication technique. This value represents the highest Pt-utilization efficiency reported in literature. The results strongly motivate the application of employing direct membrane deposition techniques to prepare low resistance polymer electrolyte thin films in order to compensate for kinetic losses introduced when using low catalyst loadings.

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“…The approach taken in the present study builds upon the recent work of Pintauro and co-workers who used particle/polymer electrospinning to fabricate high performance oxygen reduction Pt/ C nanofiber cathodes for hydrogen/air fuel cells [37,38]. In a manner similar to the fuel cell electrode work, composite fiber anodes for Li-ion batteries are prepared using particle/polymer electrospinning.…”

Section: Introductionmentioning

confidence: 97%