Hybrid of carbon-supported Pt nanoparticles and three dimensional graphene aerogel as high stable electrocatalyst for methanol electrooxidation

Zhao, Lei; Wang, Zhen‐Bo; Li, Jialong; Zhang, Jingjia; Sui, Xu–Lei; Zhang, Limei

doi:10.1016/j.electacta.2015.12.072

Cited by 70 publications

(36 citation statements)

References 57 publications

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“…6b also shows the forward scanning oxidation peak potential (E f ), forward scanning oxidation peak current (j f ), backward scanning oxidation peak potential (E b ) and backward scanning oxidation peak current (j b ) of Pt/CN-1 and Pt/CN-2 electrodes which were systematic summarized in Table 1. The j f on Pt/ CN-1 electrode is about 2.48 times and 1.90 times than that of Pt/CN-2 and the commercial Pt/C catalyst [20], and even shows better methanol electrooxidation property at the same testing condition than that of the graphene supported Pt nanocatalysts [21,22], demonstrating an enhanced electrocatalytic performance of Pt/CN-1 for MOR.…”

Section: Resultsmentioning

confidence: 75%

Facile one-pot hydrothermal synthesis and electrochemical properties of carbon nanospheres supported Pt nanocatalysts

Yang

Luo

et al. 2016

International Journal of Hydrogen Energy

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Section: Resultsmentioning

confidence: 75%

Facile one-pot hydrothermal synthesis and electrochemical properties of carbon nanospheres supported Pt nanocatalysts

Yang

Luo

et al. 2016

International Journal of Hydrogen Energy

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“…The well‐improved 3D porous network structure will promote the reactants to fully touch the Pt nanoparticles, and offer enough passageways for mass transfer of reactants and products ,. The Pt/3D‐SPG catalyst shows remarkably improved electrocatalytic performance, which could be attributed to the 3D porous network structure . 37.7 wt%, 38.2 wt% and 39.4 wt% of Pt/PG, Pt/SPG and Pt/3D‐SPG catalysts were determined by ICP‐MS tests, individually, further demonstrating the 3D porous network structure of 3D‐SPG is much easier to load Pt nanoparticles.…”

Section: Resultsmentioning

confidence: 89%

“…These factors lead to MOR stability improvement. In addition, the 3D graphene effectively enhances the surface area and catalytic active sites, which can further enhance the activity of MOR ,. On this basis, combined the advantages of dual heteroatoms co‐doping, it is interesting to investigate the S and P co‐doped 3D graphene (3D‐SPG) supported Pt nanoparticles (Pt/3D‐SPG) catalyst, which may bring a new insight into the catalyst design and synthesis in the fields of electrocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Methanol Oxidation in Acid Media on Pt/S, P Co‐doped Graphene with 3D Porous Network Structure Engineering

et al. 2019

ChemElectroChem

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A sulfur and phosphorous co-doped three-dimensional graphene (3D-SPG)-supported Pt nanoparticle (Pt/3D-SPG) catalyst with a unique 3D porous network structure was synthesized and employed as an efficient, environmentally friendly and robust catalyst for the methanol oxidation reaction (MOR). The unique 3D porous network structure of 3D-SPG is in favor of uniformly supporting Pt nanoparticles with an average size of 2.09 nm as well as enhancement of the mass transport of reactants and products. Hence, the Pt/3D-SPG catalyst shows improved stability, an electrochemical surface area over 15.5 and 30.8 % larger, and MOR performance of 1.6 and 2.2 times higher than S and P co-doped and P-doped graphenesupported Pt nanoparticle (Pt/SPG and Pt/PG) catalysts, respectively. The enhanced CO tolerance of the Pt/3D-SPG catalyst may result from the 3D porous network structure, which was not only favorable to release CO efficiently from the metallic Pt surface, but also could concentrate many more hydroxyl groups for enhancing CO ads oxidation. The Pt/3D-SPG catalyst offer a unique strategy for designing and preparing 3D graphenebased catalysts, taking into account of the advantages of doping with different heteroatoms.

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“…13 However, some disadvantageous of CB, such as size distribution and surface chemistry, have yet to be overcome. Currently, novel nanostructured carbon materials have been chosen as catalyst supports, such as carbon nanotube (CNT), 14,15 carbon nanofibre (CNF), 16,17 graphene, 18,19 single-wall CNT 20,21 and most recently, carbon nanocage (CNC) supports. 22 Each of these structured carbon supports has their own properties.…”

Section: Introductionmentioning

confidence: 99%

“…For example, graphene with 3-D structural support of Pt nanoparticles exhibits an excellent performance as a highly stable electrocatalyst in the methanol oxidation reaction. 19 Moreover, the combination of a highly active nanofibre and porous catalyst layer improves the overall methanol oxidation performance. 17 In addition, the development of nanocatalysts is also one of the more important and challenging aspects of synthesis and fabrication.…”

Section: Introductionmentioning

confidence: 99%

The potential of novel carbon nanocages as a carbon support for an enhanced methanol electro‐oxidation reaction in a direct methanol fuel cell

et al. 2020

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In this study, we introduce the potential for a new catalyst support, namely, carbon nanocages (CNCs) for anodic direct methanol fuel cell (DMFC). The synthesis, characterization and catalytic activities of four electrocatalysts, PtRu/CNC, PtNi/CNC, PtFe/CNC and PtCo/CNC, have been investigated. These electrocatalysts are synthesized using pyrolysis, followed by a microwave-assisted ethylene glycol reduction method. From X-ray diffraction analysis, PtNi/CNC and PtRu/CNC showed the smallest crystallite particle size of Pt-alloy, which corresponded to the (111) plane. The Raman spectra confirmed the presence of the carbon support material in all prepared electrocatalysts. The ratio value of the D band and G band (I D /I G) of all prepared samples was not much different within the electrocatalyst and CNC. The I D /I G values calculated for the CNC, PtNi/CNC, PtRu/CNC, PtCo/CNC and PtFe/ CNC electrocatalysts were 0.90, 0.89, 0.83, 0.78 and 0.77, respectively. Therefore, the number of defects of graphitization in increasing order (I D /I G) was PtFe/CNC < PtCo/CNC < PtRu/CNC < PtNi/CNC < CNC. Brunauer-Emmett-Teller analysis revealed that the CNC support has a mesoporous-type structure with a high surface area of 416 m 2 g −1 , which indicates that this support has a high potential to act as an excellent catalyst support. From the cyclic voltammetry curve, PtRu/CNC showed the highest catalytic activity in methanol electro-oxidation and reached a value of 427 mA mg −1 , followed by PtNi/ CNC (384.11 mA mg −1), PtCo/CNC (150.53 mA mg −1) and PtFe/CNC (144.11 mA mg −1). PtFe/CNC exhibited a higher ratio value of I f /I b (3.24) compared with PtRu/CNC (2.34), PtNi/CNC (1.43) and PtCo/CNC (1.62). These values show that the combination of Pt and Fe catalysts in PtFe/CNC had better CO tolerance than PtRu/CNC, PtNi/CNC and PtCo/CNC electrocatalysts. The higher performance of PtRu/CNC was attributed to the fact that it had the smallest bimetallic-Pt crystallite; there was a smooth distribution of bimetallic-Pt on its CNC support, as shown by field emission scanning electron microscopy; it had the highest electrochemical surface area value (16.23 m 2 g −1); and

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Hybrid of carbon-supported Pt nanoparticles and three dimensional graphene aerogel as high stable electrocatalyst for methanol electrooxidation

Cited by 70 publications

References 57 publications

Facile one-pot hydrothermal synthesis and electrochemical properties of carbon nanospheres supported Pt nanocatalysts

Facile one-pot hydrothermal synthesis and electrochemical properties of carbon nanospheres supported Pt nanocatalysts

Enhanced Methanol Oxidation in Acid Media on Pt/S, P Co‐doped Graphene with 3D Porous Network Structure Engineering

The potential of novel carbon nanocages as a carbon support for an enhanced methanol electro‐oxidation reaction in a direct methanol fuel cell

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