Development of graphene supported platinum nanoparticles for polymer electrolyte membrane fuel cells: Effect of support type and impregnation–reduction methods

Şanlı, Lale Işıkel; Bayram, Vildan; Yarar, Begüm; Ghobadi, Sajjad; Gürsel, Selmiye Alkan

doi:10.1016/j.ijhydene.2015.12.166

Cited by 72 publications

(46 citation statements)

References 52 publications

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“…The principal peaks are attributed to Pt 0 at 71.6 eV (4f7/2) and 74.9 eV (4f5/2), while the peaks at 72.6 and 75.5 eV correspond to Pt in its +2 states, respectively. The broad peaks at 77.7 eV and 80.2 eV are attributed to Pt +4 species [48]. A similar result was observed in the case of the Pt 4f spectrum of Pt/CB as seen in Fig.…”

Section: Fig 2 N 1s (A-c) and Pt 4f (D-f)supporting

confidence: 84%

One step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction

Varga

Ballai

et al. 2018

Carbon

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Section: Fig 2 N 1s (A-c) and Pt 4f (D-f)supporting

confidence: 84%

One step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction

Varga

Ballai

et al. 2018

Carbon

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“…In this study, GO was synthesized by an improved Hummers method [38,39]. Carbon components (0.5 mg/mL) and H 2 PtCl 6 (0.5 mg/mL) were ultrasonicated with DI water for 30 min.…”

Section: Synthesis Of Pt/rgo and Pt/rgo/cb Hybrid Electrocatalystsmentioning

confidence: 99%

“…However, in our study, Pt/partially reduced graphene oxide (rGO)/CB electrocatalysts were synthesized by mechanical homogenizing of carbon components (rGO and CB). The chemical reduction was employed in the presence of a Pt precursor to form supported Pt nanoparticles on the hybrid support [31,39]. By this approach, CB was used as an intercalating agent to have higher Pt utilization and better transport of reactants and by-product.…”

Section: Introductionmentioning

confidence: 99%

Electrosprayed catalyst layers based on graphene–carbon black hybrids for the next-generation fuel cell electrodes

et al. 2016

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Here, we report a novel electrode structure with graphene and graphene-carbon black hybrids by electrospraying for polymer electrolyte membrane fuel cells. After syntheses of platinum (Pt)/partially reduced graphene oxide (rGO) and Pt/r-GO/carbon black (CB) hybrid electrocatalysts, suspensions of synthesized electrocatalyst inks were prepared with Nafion Ò ionomer and poly(vinylidene fluoride-cohexafluoropropylene) and electrosprayed over carbon paper to form electrodes. Electrosprayed catalyst layer exhibited uniform and small size Pt distribution. As the graphene content increases micrometer-sized droplet, pore formation and surface roughness of the electrode increase. Thus, an open porous electrode structure which is favorable for mass transport is achieved by electrospraying. The maximum power densities, 324 mW cm -2 for Pt/rGO and 441 mW cm -2 for Pt/rGO/CB electrosprayed electrodes, were achieved at a relatively low catalyst loading.

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“…This could be attributed to a poor utilization of the catalyst surface. When graphene-like materials are used as catalyst supports, the method of catalyst synthesis and the type of graphene precursor significantly influences the EASA of the resulted catalysts [32,33,34,35]. For instance, the catalyst utilization can change from 28% to 93% depending on the synthesis procedure for graphene-supported catalysts [32].…”

Section: Resultsmentioning

confidence: 99%

Reduced Graphene Oxide and Its Modifications as Catalyst Supports and Catalyst Layer Modifiers for PEMFC

et al. 2018

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Reduced graphene oxide (RGO) and RGO modified by ozone (RGO-O) and fluorine (RGO-F) were synthesized. Pt nanoparticles were deposited on these materials and also on Vulcan XC-72 using the polyol method. The structural and electrochemical properties of the obtained catalysts were investigated in a model glass three-electrode electrochemical cell and in a laboratory PEM fuel cell. Among the RGO-based catalysts, the highest electrochemically active surface area (EASA) was obtained for the oxidized RGO supported catalyst. The EASA of the fluorine-modified RGO-supported catalyst was half as big. In the PEM fuel cell the performance of RGO-based catalysts did not exceed the activity of Vulcan XC-72-based catalysts. However, the addition of an RGO-O-based catalyst to Vulcan XC-72-based catalyst (in contrast to the RGO-F-based catalyst) allowed us to increase the catalyst layer activity and PEM fuel cell performance. Possible reasons for such an effect are discussed.

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Development of graphene supported platinum nanoparticles for polymer electrolyte membrane fuel cells: Effect of support type and impregnation–reduction methods

Cited by 72 publications

References 52 publications

One step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction

One step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction

Electrosprayed catalyst layers based on graphene–carbon black hybrids for the next-generation fuel cell electrodes

Reduced Graphene Oxide and Its Modifications as Catalyst Supports and Catalyst Layer Modifiers for PEMFC

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