Stabilization of High-Performance Oxygen Reduction Reaction Pt Electrocatalyst Supported on Reduced Graphene Oxide/Carbon Black Composite

Li, Yujing; Li, Yongjia; Zhu, Enbo; McLouth, Tait D.; Chiu, Chin‐Yi; Huang, Xiaoqing; Huang, Yu

doi:10.1021/ja3031449

Cited by 465 publications

(301 citation statements)

References 39 publications

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“…[4][5][6] Recently, graphene sheets, atomic layers of graphitic carbons, are demonstrated to possess twice higher capacity of graphitic carbons, and exhibit some unique features such as superior electrical conductivity, high surface area, structural fl exibility and chemical stability. [7][8][9][10][11][12][13][14][15] These features render graphene sheets to become a potential anode material for lithium storage. Moreover, both theoretical and experimental studies reveal that heteroatom (B, N, P and F)-doping of graphene can change their adsorption energy, the diffusion and desorption barrier of lithium ions, [16][17][18][19] which result in the enhanced reversible capacity for lithium storage with respect to pristine graphene.…”

Section: Doi: 101002/admi201300149mentioning

confidence: 99%

Fabrication of Fully Fluorinated Graphene Nanosheets Towards High‐Performance Lithium Storage

Zhan

Yang

Wang

et al. 2014

Adv Materials Inter

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Section: Doi: 101002/admi201300149mentioning

confidence: 99%

Fabrication of Fully Fluorinated Graphene Nanosheets Towards High‐Performance Lithium Storage

Zhan

Yang

Wang

et al. 2014

Adv Materials Inter

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“…Severe stacking of GR sheets leads to a loss of the ultrahigh surface area advantage as a two-dimensional nanomaterial. Recently, a few efforts have been made to prevent GR sheets from severe stacking (Yoo, Kim, et al 2008;Park et al 2011;Li et al 2012).…”

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Pt-Nanoparticles-Laden Graphene Crumples by Aerosol Spray Pyrolysis and Evaluation of Their Electrocatalytic Activity

Jang

Kim

Chang

et al. 2013

Aerosol Science and Technology

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Pt-nanoparticles-laden graphene (GR) crumples were directly synthesized from a colloidal mixture of aqueous chloroplatinic acid (H 2 PtCl 6 ) and graphene oxide (GO) sheets via aerosol spray pyrolysis (ASP). Effects of Pt content in the Pt/GR composite and temperature of heating zone on the particle morphology, diffraction pattern, and specific surface area were investigated. The morphology of Pt/GR was the shape of a crumpled sheet of paper and the average size of the composite was around 1.3 µm in diameter. As Pt content increased from 2 to 20 wt%, higher numbers of Pt nanoparticles are observed on the GR at higher Pt content and the specific surface area of the composite also increased from 122 to 146 m 2 /g. Also, the intensity of the GR peak decreased, but that of the Pt peak increased. As temperature increased from 500• C to 900 • C, an increase of the particle size of Pt due to sintering was observed. Electrocatalytic application of the Pt/GR composites was examined through methanol oxidation reaction. The 20 wt% Pt/GR synthesized at 900• C showed higher performance on methanol oxidation than a commercial 20 wt% Pt/carbon black catalyst.

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“…[2][3][4][5][6] 15,[18][19][20] To fundamentally solve this technological issue and improve electrocatalyst durability, alternative carbon-free electrocatalyst support materials such as tin oxide (SnO 2 ) 21-29 and titanium oxide (TiO x ) [30][31][32][33][34] have also been proposed. It has been shown that SnO 2 is a promising alternative platinum support, since it has good electronic conductivity and thermochemical stability under the strongly acidic cathode conditions in a PEFC.…”

mentioning

confidence: 99%

Platinum-Decorated Tin Oxide and Niobium-Doped Tin Oxide PEFC Electrocatalysts: Oxygen Reduction Reaction Activity

Tsukatsune¹,

Takabatake²,

Noda³

et al. 2014

J. Electrochem. Soc.

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Using tin oxide (SnO 2 ) and niobium-doped tin oxide (Nb-SnO 2 ) as alternative electrocatalyst support materials can effectively solve the issue of carbon corrosion in polymer electrolyte fuel cell (PEFC) cathodes. Here, we systematically explore the effect of support surface area, Pt loading, and Pt nanoparticle size on the electrochemistry of these carbon-free electrocatalysts. Reducing the Pt loading leads to an increase in electrochemical surface area, but the specific activity decreases as previously observed in conventional carbon based electrocatalysts. Removing residual chlorine impurities by replacing the H 2 PtCl 6 nanoparticle precursor with Pt(acac) 2 increases the specific activity. Niobium-doping of the SnO 2 support also results in an increase in specific activity, due to the increased electronic conductivity. Consequently, the oxygen reduction reaction activity of optimized Pt-decorated Nb-SnO 2 is approaching to that of Pt-decorated carbon black, the current state-of-the-art PEFC electrocatalyst. The polymer electrolyte membrane fuel cell (PEFC) is one of the most promising energy conversion technologies for e.g. residential and automotive applications. Pt nanoparticles supported on carbon black are widely used as electrocatalysts.1-6 However, carbon corrosion is an issue under high cathode potential, resulting in detachment of Pt catalyst particles from the carbon support, and leading to a decrease in electrochemical surface area (ECSA) and oxygen reduction reaction (ORR) activity over time. [2][3][4][5][6] 15,[18][19][20] To fundamentally solve this technological issue and improve electrocatalyst durability, alternative carbon-free electrocatalyst support materials such as tin oxide (SnO 2 ) 21-29 and titanium oxide (TiO x ) [30][31][32][33][34] have also been proposed. It has been shown that SnO 2 is a promising alternative platinum support, since it has good electronic conductivity and thermochemical stability under the strongly acidic cathode conditions in a PEFC. 28,[35][36][37] Remarkable retention of ESCA in Pt-decorated SnO 2 electrocatalysts has been demonstrated compared to Pt-decorated Vulcan carbon black, by severe voltage cycling (up to 60,000 cycles) between 0.9 and 1.3 V versus the reversible hydrogen electrode (V RHE ) in electrochemical half-cell durability tests. 28 Recently, the high durability has been confirmed in membrane electrode assemblies (MEAs), during more severe voltage cycling between 1.0 and 1.5 V RHE . 29 These studies have demonstrated the stability of Pt-decorated SnO 2 against the start-stop cycles typical in fuel cell vehicles. However, high ORR activity is also required for PEFC cathode electrocatalyst applications and this has not yet been demonstrated. Relatively low ORR activity has been reported to date compared with state-of-the-art Pt supported on carbon black. 28,36 Most of the ORR values have been measured below 0.9 V RHE for oxide-supported electrocatalysts, while the ORR of conventional Pt-decorated carbon black is usually evaluated at * Electroch...

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Stabilization of High-Performance Oxygen Reduction Reaction Pt Electrocatalyst Supported on Reduced Graphene Oxide/Carbon Black Composite

Cited by 465 publications

References 39 publications

Fabrication of Fully Fluorinated Graphene Nanosheets Towards High‐Performance Lithium Storage

Fabrication of Fully Fluorinated Graphene Nanosheets Towards High‐Performance Lithium Storage

One-Step Synthesis of Pt-Nanoparticles-Laden Graphene Crumples by Aerosol Spray Pyrolysis and Evaluation of Their Electrocatalytic Activity

Platinum-Decorated Tin Oxide and Niobium-Doped Tin Oxide PEFC Electrocatalysts: Oxygen Reduction Reaction Activity

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