2D intrinsically defective RuO2/Graphene heterostructures as All-pH efficient oxygen evolving electrocatalysts with unprecedented activity

Li, Yaguang; Wang, Yi; Lü, Jianmin; Yang, Bing; San, Xingyuan; Wu, Zhong‐Shuai

doi:10.1016/j.nanoen.2020.105185

Cited by 74 publications

(55 citation statements)

References 44 publications

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“…We took *OH, *O, and *OOH as reaction intermediates to simulate the OER processes on two catalysts in alkaline electrolyte. [54][55][56] The Gibbs free-energy diagrams of typical OER processes, involving four elementary steps, were depicted in Figure 5a. Among all these steps, the largest difference of Gibbs free energy between *O and *OOH is used to describe the OER catalytic ability and regarded as the reaction rate-determining step (RDS).…”

Section: Resultsmentioning

confidence: 99%

“…Two kinds of models are prepared, one is CoP/C, in which Co is connected with carbon directly, and the other is Co−O−C@CoP, in which Co is linked with O in the defective oxidized graphene. We took *OH, *O, and *OOH as reaction intermediates to simulate the OER processes on two catalysts in alkaline electrolyte [54–56] . The Gibbs free‐energy diagrams of typical OER processes, involving four elementary steps, were depicted in Figure 5a.…”

Section: Resultsmentioning

confidence: 99%

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Constructed Interfacial Oxygen‐Bridge Chemical Bonding in Core‐Shell Transition Metal Phosphides/Carbon Hybrid Boosting Oxygen Evolution Reaction

et al. 2021

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A designed structure which CoP nanoparticles (NPs) ingeniously connected with graphene-like carbon layer via in-situ generated interfacial oxygen-bridge chemical bonding was achieved by a mild phosphorization treatment. The results proved that the presence of phosphorus vacancies is a crucial factor enabling formation of CoÀ OÀ C bonds. The direct coupling of edge Co of CoP with the oxygen from functional groups on the carbon layer was proposed. As a catalyst for electrocatalytic water splitting, the manufactured Fe 2 O 3 @C@CoP core-shell structure manifested a low overpotential of 230 mV, a low Tafel slope of 55 mV dec À 1 , and long-term stability. Density functional theory calculations verified that the CoÀ OÀ C bond played a critical role in decreasing the thermodynamic energy barrier of reaction rate-determining step for the oxygen evolution reaction (OER). This synthetic route might be extended to construct metalÀ OÀ C bonds in other transition metal phosphides (or selenides, sulfides)/carbon composites for highly efficient OER catalysts.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Constructed Interfacial Oxygen‐Bridge Chemical Bonding in Core‐Shell Transition Metal Phosphides/Carbon Hybrid Boosting Oxygen Evolution Reaction

et al. 2021

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“…With different defect types, numbers, and locations, materials can be endowed with many different properties that are useful in electricity, optics, and chemistry. [152][153][154] Thus, defective materials can be extensively applied in various fields, including optoelectronic devices, catalysis, sensors, energy storage, and conversion devices. Electrocatalysts with defects have been applied in the ORR, OER, HER, CO 2 RR, and MOR.…”

Section: Defect Engineeringmentioning

confidence: 99%

“…Electrocatalysts with defects have been applied in the ORR, OER, HER, CO 2 RR, and MOR. [130,153,155,156] Defects can be introduced via stress, etching, ion exchange, and other methods. [74,157] CoO-CoSe 2 nanoparticles with rich oxygen vacancies were constructed via Se doping during the formation of cobalt monoxide.…”

Section: Defect Engineeringmentioning

confidence: 99%

Electronic Structure Modulation of Non‐Noble‐Metal‐Based Catalysts for Biomass Electrooxidation Reactions

et al. 2021

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Figure 1. Schematic illustration and the mechanism of the BEOR. a) Schematic illustration of producing value-added products by biomass oxidation electrocatalysis. b) Possible pathways and the energy profiles of HMF oxidation to FDCA on the NiOOH surface. a,b) Reproduced with permission. [54] Copyright 2021, Wiley-VCH. c) Proposed mechanism of the BA oxidation on the Co 3 O 4 NWs/Ti membrane electrode. Reproduced with permission. [55] Copyright 2017, American Chemical Society. d) Incorporation of 18 O in the base-free oxidation of HMF. Reproduced with permission. [56] Copyright 2014, Elsevier.

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“…CNSs have been widely studied in electrocatalysis, usually in combination with other components, such as metals [55][56][57][58][59][60][61][62][63][64] and oxides [65][66][67][68][69][70][71][72] or both [73][74][75][76][77], to attain enhanced performance [78], but also in metal-free electrocatalysis [79] for more sustainable solutions [80]. Branched CNSs are promising materials to use with various electrocatalysts for cathodic oxygen reduction reaction (ORR) [81][82][83][84][85][86], oxygen evolution reaction (OER) [81,84,87,88], and hydrogen evolution reaction (HER) [89][90][91][92].…”

Section: Electrocatalysismentioning

confidence: 99%

Growth, Properties, and Applications of Branched Carbon Nanostructures

Malik

Marchesan

2021

Nanomaterials

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Nanomaterials featuring branched carbon nanotubes (b-CNTs), nanofibers (b-CNFs), or other types of carbon nanostructures (CNSs) are of great interest due to their outstanding mechanical and electronic properties. They are promising components of nanodevices for a wide variety of advanced applications spanning from batteries and fuel cells to conductive-tissue regeneration in medicine. In this concise review, we describe the methods to produce branched CNSs, with particular emphasis on the most widely used b-CNTs, the experimental and theoretical studies on their properties, and the wide range of demonstrated and proposed applications, highlighting the branching structural features that ultimately allow for enhanced performance relative to traditional, unbranched CNSs.

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2D intrinsically defective RuO2/Graphene heterostructures as All-pH efficient oxygen evolving electrocatalysts with unprecedented activity

Cited by 74 publications

References 44 publications

Constructed Interfacial Oxygen‐Bridge Chemical Bonding in Core‐Shell Transition Metal Phosphides/Carbon Hybrid Boosting Oxygen Evolution Reaction

Constructed Interfacial Oxygen‐Bridge Chemical Bonding in Core‐Shell Transition Metal Phosphides/Carbon Hybrid Boosting Oxygen Evolution Reaction

Electronic Structure Modulation of Non‐Noble‐Metal‐Based Catalysts for Biomass Electrooxidation Reactions

Growth, Properties, and Applications of Branched Carbon Nanostructures

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