Well-dispersive Pt nanoparticles grown on 3D nitrogen- and sulfur-codoped graphene nanoribbon architectures: highly active electrocatalysts for methanol oxidation

Building 3D Interconnected MoS2 Nanosheet–Graphene Networks Decorated with Rh Nanoparticles for Boosted Methanol Oxidation Reaction

“…Given this, it is necessary to modify the DMFC electrodes with active and stable electrocatalysts, which have long been regarded as one of the core components of the DMFC system. − Although metallic platinum (Pt) is known to possess prominent methanol oxidation activity, the extremely low reserves in nature and poisoning effects of the CO molecule have severely hampered its practical usage, which has motivated the design and construction of various non-Pt electrocatalysts with high activity and accepted costs. − Among them, metallic rhodium (Rh) has recently become a hotspot of research in the fuel cell area . Especially in alkaline media, Rh is found to have comparable catalytic ability but better CO resistance in comparison with Pt-based catalysts .…”

Ultrafine Rh nanocrystals immobilized on 3D boron and nitrogen co-doped graphene–carbon nanotube networks: high-efficiency electrocatalysts towards the methanol oxidation reaction

“…9,10 Therefore, the exploration and utilization of high-performance and low-cost anode catalysts have become the key to the successful commercialization of DMFC systems. 11,12…”

“…9,10 Therefore, the exploration and utilization of high-performance and low-cost anode catalysts have become the key to the successful commercialization of DMFC systems. 11,12 Over the past few decades, a great deal of research work has shown that platinum (Pt) and Pt-based catalysts have unique electrocatalytic properties for the MOR. [13][14][15] However, metallic Pt is not only very expensive as a scarce resource, but also easily poisoned by intermediate CO molecules generated during the MOR process, both of which severely impede the large-scale use of Pt catalysts.…”

Three‐Dimensional Porous Low‐Defect Carbon Nanotube and Graphene Network Supported Rh Nanocrystals as Efficient Methanol Oxidation Electrocatalysts

“…[26,27] Our recent studies have also demonstrated that the use of 3D graphene-based supports can largely facilitate the nucleation and growth of noble metal nanoparticles, thereby leading to much improved electrocatalytic abilities. [28,29] On the other hand, the graphene nanosheets are widely prepared through the chemical reduction of graphene oxide, which commonly renders a carbonaceous structure with high defect density along with large losses of electrical conductivity and mechanical properties. [30,31] Meanwhile, it is noted that the electrocorrosion reaction usually takes places at the defect sites of the carbon supports, thus resulting in an unreliable long-term stability of the graphene-supported noble metal catalysts.…”

“…Within this context, it is an effective incentive to construct three‐dimensional (3D) aerogel architectures with thin graphene sheets, which effectively prevents the networks from collapse along with the active site overlap [26,27] . Our recent studies have also demonstrated that the use of 3D graphene‐based supports can largely facilitate the nucleation and growth of noble metal nanoparticles, thereby leading to much improved electrocatalytic abilities [28,29] . On the other hand, the graphene nanosheets are widely prepared through the chemical reduction of graphene oxide, which commonly renders a carbonaceous structure with high defect density along with large losses of electrical conductivity and mechanical properties [30,31] .…”