Highly loaded carbon black supported Pt catalysts for fuel cells

Kaluža, Luděk; Larsen, Mikkel Juul; Zdražil, Miroslav; Gulková, Daniela; Vı́t, Zdeněk; Šolcová, Olga; Soukup, Karel; Koštejn, Martin; Bonde, Jacob Lindner; Maixnerová, Lucie; Odgaard, Madeleine

doi:10.1016/j.cattod.2015.02.016

Cited by 34 publications

(15 citation statements)

References 28 publications

(46 reference statements)

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“…The electrodes used were purposely designed to resemble practical catalyst layers in a PEMFC (with respect to loading and binder content) rather than ultrathin film electrodes. The details of the applied procedure are given elsewhere [4,5]. In brief, suspensions of catalyst, water, alcohol and ionomer were made, from which electrodes with a loading of ca.…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…One is a chemical impregnation method described in our previous work [4,5,6]. It was found that impregnation of the support by hexachloroplatinic acid (H2PtCl6) is a suitable synthesis method [4] and that a calcination step prior to the reduction of the precursors on the support surface leads to greater electrochemical stability [5]. Furthermore, different procedures for removing possibly harmful residual chlorine species were studied, and a dechlorination method involving aqueous sodium hydroxide (NaOH) solution was found to be convenient [6].…”

Section: Introductionmentioning

confidence: 99%

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Development of tailored high-performance and durable electrocatalysts for advanced PEM fuel cells

Larsen

Jiménez‐Morales

Cavaliere

et al. 2017

International Journal of Hydrogen Energy

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International audienceA family of novel carbon materials with intermediate surface area and varying morphology and surface chemistry were used to prepare Pt/C catalysts by two different preparation procedures; a chemical impregnation method and a microwave-assisted polyol method. The catalysts were thoroughly characterized, and their electrochemical performance and stability were investigated with rotating disc electrode (RDE) cyclic voltammetric (CV) measurements. The intermediate-surface-area carbon supports gave catalysts with much greater support stability than a widely used standard catalyst. The novel catalysts had lower electrochemical surface area than the reference, but their spe-cific electrocatalytic activity towards the oxygen-reduction reaction (ORR) was much higher, and some of them also featured higher mass-specific ORR activity than the ref-erence. The series of catalysts prepared by the microwave-assisted polyol method fea-tured smaller Pt nanoparticles and higher activities than those prepared by impregnation. On the other hand, the impregnated catalysts showed better durability of the Pt particles. The most promising catalysts were selected and elaborated in further optimized preparation procedures to obtain quantities sufficient for their use in proton-exchange membrane fuel cells (PEMFCs)

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Section: Electrochemical Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of tailored high-performance and durable electrocatalysts for advanced PEM fuel cells

Larsen

Jiménez‐Morales

Cavaliere

et al. 2017

International Journal of Hydrogen Energy

Self Cite

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“…Since anode fabrication involves precious metals, coatings of precious metals (or oxides) or other costly materials, the use of electrodes coated with an active layer of supported catalysts can be considered instead to reduce the capital costs associated to electrolytic processes for water disinfection. Electrodes fabricated using supported catalysts are widely known in electrochemistry (e.g., in fuel cells and CO2 reduction applications), and the methods most commonly used for their synthesis are electroless plating and wet impregnation [8,9]. This research project aims to fabricate an anode for an electrochemical cell for water disinfection using a stainless-steel mesh and platinum supported on carbon black produced by the electroless method.…”

Section: Introductionmentioning

confidence: 99%

Disinfection of Naturally Contaminated Underground Well Water in an Electrochemical Cell with Platinum/Carbon Black-Based Anodes

González-Poggini¹,

Colet-Lagrille²

2019

JESPR

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“…Platinum/ carbon (Pt/C) composite is demonstrated to be the most efficient catalyst used for fuel cells. [20][21][22] However, high price, scarcity, poor utilization efficiency, and easy carbon monoxide poisoning greatly limit its commercial applications. [23] Therefore, development of low-cost, stable, and efficient electrocatalysts for ORR is a major challenge in the field of fuel cells.…”

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confidence: 99%

Conducting‐Polymer‐Based Materials for Electrochemical Energy Conversion and Storage

Wang

Kong

et al. 2017

Advanced Materials

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and poly(3,4-ethylenedioxythiophene) (PEDOT). The highly conjugated polymer chains can be reversibly assigned electrochemical properties by a doping/dedoping process. [9][10][11] By regulating and controlling the level of doping, their conductivities can be tuned in a wide range, from 10 −10 to 10 4 S cm, spanning the entire range from insulators to semiconductors, to conductors. [12,13] Additionally, these conducting polymers retain the advantages of traditional polymers, such as low cost, convenient preparation, good affinity to many other materials, and high flexibility and durability. Recently, great efforts have been made to exploit the applications of conducting polymers as electrocatalysts for fuel cells and as electrode materials for supercapacitors. Considering the rapidly booming efforts undertaken in this cutting-edge research area, it is necessary to highlight the new discoveries and achievements in the past several years. Here, we introduce the latest advances in conducting-polymer-based materials for fuel cells and supercapacitors, and focus on the strategies employed to improve their electrocatalytic and electrochemical performance. Conducting-Polymer-Based Catalysts for Fuel CellsFuel cells are promising green energy-conversion devices that convert chemical energy of various fuels directly into electric energy under electrochemical redox reactions. This technology provides intriguing applications in portable energy sources [14,15] and has attracted increasing attention in recent years. [16][17][18][19] Such energy-conversion systems require highly efficient electrocatalysts to trigger the oxygen reduction reaction (ORR) that occurs at the fuel cell's cathode. Platinum/ carbon (Pt/C) composite is demonstrated to be the most efficient catalyst used for fuel cells. [20][21][22] However, high price, scarcity, poor utilization efficiency, and easy carbon monoxide poisoning greatly limit its commercial applications. [23] Therefore, development of low-cost, stable, and efficient electrocatalysts for ORR is a major challenge in the field of fuel cells. [24][25][26][27][28] Owing to their highly tunable conductivity, good electrocatalytic activity, and satisfactory electrochemical stability, conducting polymers are considered to be promising electrocatalyst materials for the ORR. [29] Initially, conducting-polymer-based electrodes were fabricated through direct casting of neutral To alleviate the current energy crisis and environmental pollution, sustainable and ecofriendly energy conversion and storage systems are urgently needed. Due to their high conductivity, promising catalytic activity, and excellent electrochemical properties, conducting polymers have been attracting intense attention for use in electrochemical energy conversion and storage. Here, the latest advances regarding the utilization of conducting polymers for fuel cells and supercapacitors are introduced. The strategies employed to improve the electrocatalytic and electrochemical performances of conducting-polymerbased materials are prese...

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Highly loaded carbon black supported Pt catalysts for fuel cells

Cited by 34 publications

References 28 publications

Development of tailored high-performance and durable electrocatalysts for advanced PEM fuel cells

Development of tailored high-performance and durable electrocatalysts for advanced PEM fuel cells

Disinfection of Naturally Contaminated Underground Well Water in an Electrochemical Cell with Platinum/Carbon Black-Based Anodes

Conducting‐Polymer‐Based Materials for Electrochemical Energy Conversion and Storage

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