Tuning Pt-skinned PtAg nanotubes in nanoscales to efficiently modify electronic structure for boosting performance of methanol electrooxidation

Ouyang, Yirui; Cao, Haijie; Wu, Heng; Wu, Diben; Wang, Fengqian; Fan, Xiaojing; Yuan, Weiyong; He, Maoxia; Zhang, Lian Ying; Li, Chang Ming

doi:10.1016/j.apcatb.2020.118606

Cited by 97 publications

(37 citation statements)

References 62 publications

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“…Interestingly, the hybrids exhibit higher capacitance than MnO 2 alone; this is attributed to more effective transport in the complex structure enabling faster charge transfer. Previous reports of combining carbon and transition metal systems, such as PdAgNTs 57 and PdW/C, 48 also convey superior electrochemical performance measurements compared to the individual components without the carbon support. This is due to the support providing high surface areas and active sites for electrode interactions.…”

Section: Electrochemical Capacitive Behaviormentioning

confidence: 98%

“…Studies have shown that the carbon support enhances the electrochemical performance and the geometry of 1D nanomaterials facilitate electron transport. 48,57 One study described the synthesis and characterization of hollow cobalt oxide (Co 3 O 4 ) attached onto holey graphene for use in lithium ion battery applications. 58 Interestingly, the electrochemical performance demonstrated charge-discharge capacities that were faster for the in situ holey graphene-Co 3 O 4 than either the normally holey graphene-Co 3 O 4 or non-holey graphene-Co 3 O 4 electrodes, which shorten diffusion lengths for enhancing lithium ion transport.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and electrochemical properties of high performance graphene/manganese oxide hybrid electrodes

2021

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Section: Electrochemical Capacitive Behaviormentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Microstructure and electrochemical properties of high performance graphene/manganese oxide hybrid electrodes

2021

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“…© 2020 Wiley-VCH GmbH enable them to exhibit excellent electrocatalytic performance. [103] Among various nanostructures, the metallic nanomaterials with low dimension have attracted growing interests, for which possessed abundant features, including high density of unsaturated atoms as active sites, high electron mobility, and significantly high specific surface area. [104][105][106] Update, remarkable endeavors have been undertaken to enhance the electrocatalytic performance of LDMNs by taking full advantages of their inherent structural characteristics.…”

Section: (19 Of 33)mentioning

confidence: 99%

Low‐Dimensional Metallic Nanomaterials for Advanced Electrocatalysis

Shang

Wang

et al. 2020

Adv Funct Materials

169

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The development of clean sustainable energy technologies has been significantly promoted by advances in electrocatalysts, especially for lowdimensional metallic nanomaterials (LDMNs), which have distinctive structural, physiochemical, and electronic properties, including a highly active surface area, efficient electron transfer, and rich surface unsaturated atoms. Recent advances have also revealed that surface engineering, interface engineering, and strain engineering for LDMNs can readily lead to increased surface active centers, strong synergistic effects, and electronic modulation, thus providing new approaches that greatly promote the electrocatalytic performance. In this review, the recent progress in LDMNs is highlighted in the context of their potential as electrocatalysts with superb performance for advanced electrocatalytic reactions. The latest achievements in their structural design, controllable synthesis, mechanistic understanding, and avenues for performance enhancement are illustrated. Strategies for controlled synthesis of high-quality LDMNs and discussed, and to boost the future development of LDMNs for energy-related conversion technology, future perspectives and potential challenges are also proposed.

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“… 1 − 3 One of the major problems with the platinum electrodes is the CO-poisoning during fuel oxidation. 4 To overcome this problem, several binary catalysts such as PtFe, 5 , 6 PtCo, 6 − 8 PtNi, 6 , 9 PtCu, 10 , 11 PtZn, 12 , 13 PtAg, 14 and PtSn 15 have been electrochemically tested for fuel cell reactions. The improved catalysis was attributed to the bifunctional mechanism of fuel oxidation.…”

Section: Introductionmentioning

confidence: 99%

Zinc-Coordination Polymer-Derived Porous Carbon-Supported Stable PtM Electrocatalysts for Methanol Oxidation Reaction

et al. 2021

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Porous carbon (PC) is obtained by carbonizing a zinc-coordination polymer (MOF-5) at 950 °C and PtM (M = Fe, Co, Ni, Cu, Zn) nanoparticles (NPs), which are deposited on PC using the polyol method. Structural and morphological characterizations of the synthesized materials are carried out by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), and high-resolution transmission electron microscopy (HRTEM), and the porosity was determined using a N 2 adsorption/desorption technique. The results revealed that PtM NPs are alloyed in the fcc phase and are well dispersed on the surface of PC. The electrochemical results show that PtM/PC 950 catalysts have higher methanol oxidation reaction (MOR) performances than commercial Pt/C (20%) catalysts. After 3000 s of chronoamperometry (CA) test, the MOR performances decreased in the order of Pt 1 Cu 1 /PC 950 > Pt 1 Ni 1 /PC 950 > Pt 1 Fe 1 /PC 950 > Pt 1 Zn 1 /PC 950 > Pt 1 Co 1 /PC 950. The high MOR activities of the synthesized catalysts are attributed to the effect of M on methanol dissociative chemisorption and improved tolerance of Pt against CO poisoning. The high specific surface area and porosity of the carbon support have an additional effect in boosting the MOR activities. Screening of the first row transition metals ( d 5+ n , n = 1, 2, 3, 4, 5) alloyed with Pt binary catalysts for MOR shows that Pt with d 8 (Ni) and d 9 (Cu) transition metals, in equivalent atomic ratios, are good anode catalysts for alcohol fuel cells.

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Tuning Pt-skinned PtAg nanotubes in nanoscales to efficiently modify electronic structure for boosting performance of methanol electrooxidation

Cited by 97 publications

References 62 publications

Microstructure and electrochemical properties of high performance graphene/manganese oxide hybrid electrodes

Microstructure and electrochemical properties of high performance graphene/manganese oxide hybrid electrodes

Low‐Dimensional Metallic Nanomaterials for Advanced Electrocatalysis

Zinc-Coordination Polymer-Derived Porous Carbon-Supported Stable PtM Electrocatalysts for Methanol Oxidation Reaction

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