2004
DOI: 10.1016/j.electacta.2004.02.069
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Electrochemical studies of DMFC anodes with different ionomer content

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Cited by 42 publications
(18 citation statements)
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“…The ionomer is used in order to increase the ionic conductivity of the electrode [ 32 -34 ] and improving the adhesion between the membrane material and the electrode layer. In the acidic MEAs Nafion ® dispersion is used and the optimum ionomer-carbon ratio depends on the carbon support of the catalyst particles: for carbon black (Vulcan) the optimized value for anodes is between 25-40 wt% [35][36][37][38] and in our experiments the aim is for 30 wt% ionomer. As for the less porous nano carbon supports (CNT and GNF) only limited optimization has been performed, however, in preliminary studies it has been found that higher (over 50 wt%)…”
Section: Direct Alcohol Fuel Cellmentioning
confidence: 99%
“…The ionomer is used in order to increase the ionic conductivity of the electrode [ 32 -34 ] and improving the adhesion between the membrane material and the electrode layer. In the acidic MEAs Nafion ® dispersion is used and the optimum ionomer-carbon ratio depends on the carbon support of the catalyst particles: for carbon black (Vulcan) the optimized value for anodes is between 25-40 wt% [35][36][37][38] and in our experiments the aim is for 30 wt% ionomer. As for the less porous nano carbon supports (CNT and GNF) only limited optimization has been performed, however, in preliminary studies it has been found that higher (over 50 wt%)…”
Section: Direct Alcohol Fuel Cellmentioning
confidence: 99%
“…However, when new carbon supported catalysts are tested in fuel cells, the usual approach is to use optimum compositions found for commercial carbon black (Vulcan) catalysts. The optimum ionomer-carbon ratio for these catalysts has been studied several times for DMFC MEAs in the past [29] [30][31] [32]. The optimum depends on the exact metal to carbon ratio and the method of MEA fabrication, but it is usually between 25-40 wt % of the total dry mass of the electrode.…”
Section: Introductionmentioning
confidence: 99%
“…A further increase in the Nafion content of the anode may further increase the DMFC performance. For example, for a DMFC anode with 3 mg of PtRu (53.3 wt.% PtRu/C) per cm 2 , the optimal Nafion content was reported as 60 wt.% [30]. Our catalyst loading on carbon being lower, and thus our catalyst layer thickness being more important, the optimal Nafion content may be even higher than 60 wt.%.…”
Section: R P and R P Values For Stenciled Vs Sprayed Anodesmentioning
confidence: 99%
“…The influence of the ionomer content in the catalysts layers on the DMFC performance has been studied for carbon supported [30] and unsupported [2,30,31] Pt-Ru catalysts. The performance of a DMFC is dependent on the Nafion content.…”
Section: R P and R P Values For Stenciled Vs Sprayed Anodesmentioning
confidence: 99%