Graphene as catalyst support: The influences of carbon additives and catalyst preparation methods on the performance of PEM fuel cells

Enhanced stability of multilayer graphene-supported catalysts for polymer electrolyte membrane fuel cell cathodes

“…As shown previously [35], MLG-containing catalyst support layers show a formation of a very dense roof-tile structure, which is built during a coating process. This fact leads to a consequence that a fuel cell MEA which contains this material as catalyst support exhibits mass-transport problems and a poor performance.…”

“…The use of a MLG-based catalyst support could reduce the production costs and improve the efficiency of fuel cell systems by (i) reducing the platinum loading by increasing the Pt utilization due to MLG's higher extended surface area and (ii) improving the lifetime of the fuel cell electrodes by reducing or stopping the degradation of the catalysts and supportive materials [35].…”

“…For this reason it is necessary to add spherical or tube-like carbon spacers (different carbon blacks or MWCNT) which prevent the formation of a roof tile structure. Such a composite leads to a very porous and percolated system, which enables a very good mass-transport of educts/products and an enhanced electronic conductivity [35].…”

Research Progress of Preparation Methods of Graphene Nanocomposites for Low-Temperature Fuel Cells and Lithium-Ion Batteries

“…The results revealed that the bimetallic catalysts showed higher activity than other monometallics. Marinkasa et al 32 successfully prepared Pt/graphene, Pt/graphene/carbon black and Pt/graphene/multi-walled carbon nanotube composites by a thermally induced chemical reduction method, and analysed these three composite materials. The results showed that the addition of carbon black particles or multi-walled carbon nanotubes destroyed the structure of graphene and formed a porous layer, which was effective for mass transport, and then the performance PEMFC had improved.…”

Probing the Catalytic Activity of Tin-Platinum Decorated Graphene; Liquid Phase Oxidation of Cyclohexane

“…Graphene, a two-dimensional material exhibits highly desirable physical characteristics such as a theoretical surface area of 2630 m 2 /g [13], high electronic and thermal conductivities [14], excellent mechanical properties [15], remarkable optical and electrical properties [16], and excellent chemical stability [17]. The interesting properties of graphene make it very attractive for possible applications in a variety of fields such as nanocomposites, nanoelectronics, batteries, supercapacitors, hydrogen storage, and sensors, etc.…”