Design of active and stable oxygen reduction reaction catalysts by embedding Co x O y nanoparticles into nitrogen-doped carbon

Yang, Fan; Abadía, Mikel; Chen, Chaoqiu; Wang, Weike; Li, Le; Zhang, Lianbing; Rogero, Celia; Knez, Mato

doi:10.1007/s12274-016-1269-5

Cited by 27 publications

(19 citation statements)

References 51 publications

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“…[103] On the other hand, another efficient strategy to improve the conductivity of transition TMOs and achieve high ORR activity is to construct TMOs together with other highly conductive materials. Recently, hybrid materials have been developed by coupling TMOs with highly conductive materials (graphene), [104][105][106][107][108] nitrogen-doped carbon, [109] metal particles, [110][111][112] etc.). Then, further defect engineering through synergy can improve the ORR activity and the stability of the hybrid materials.…”

Section: Orrmentioning

confidence: 99%

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

Wang

Liang

Zheng

et al. 2020

Chemistry An Asian Journal

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The applications of many energy-related electrochemical energy conversion and storage devices are changing with each passing day. Oxygen evolution reaction (OER), hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR) are the key steps in the commercial application of these energy conversion/storage equipment. Defect-rich transition metal oxides (TMOs), such as Co, Mn, Fe, Ni, etc., have always been one of the most promising electrocatalysts, which are cheap, easy to obtain, high in catalytic activity and stable during electrocatalysis. In this review, we first introduce the definition, classification, characteristics, and construction of defects. Then, the latest developments of defect-rich TMO electrocatalysts in electro-catalysis and energy conversion storage device is summarized. Furthermore, the relationship between defects and activity and the potential mechanism are also discussed. The defects in defect-rich TMOs can adjust the surface/interface electronic structure of the electrocatalyst, change the adsorption energy of the intermediate product, or increase the intrinsic catalytic activity of active sites, which are beneficial for enhanced catalytic performance. Finally, the current challenges and prospects of defect-rich TMO electrocatalysts are proposed. Therefore, the introduction of defects in TMO will be a potential strategy for the rational design of high-performance electrocatalysts in the future.

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Section: Orrmentioning

confidence: 99%

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

Wang

Liang

Zheng

et al. 2020

Chemistry An Asian Journal

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“…Different from the carbon encapsulated NPs catalysts, there were cases that no carbon-coating layers on the metal oxide NPs, and the bare oxide particles would suffer from dissolution or aggregation, leading to the decay of ORR activity. In order to resolve the durability issue, protection strategies were designed [73]. An active and stable catalyst Co 3 O 4 /CNT@C was prepared by annealing CNTs-Co 3 O 4 hybrid coated with polydopamine.…”

Section: Fe/co Oxide Npsmentioning

confidence: 99%

Fe/Co-based nanoparticles encapsulated in heteroatom-doped carbon electrocatalysts for oxygen reduction reaction

Chen

et al. 2019

Sci. China Mater.

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It is crucial to develop low-cost and highly efficient catalysts for oxygen reduction reaction (ORR) which is the key process in electrochemical energy conversion and storage devices. Transition metal-based nanoparticles/carbon materials are an important class of non-noble metal catalysts that have attracted considerable research interest. The topic of this review is mainly focused on carbon encapsulated Fe/Cobased nanoparticles catalysts for ORR, and these catalysts are summarized in categories of metals, oxides, carbides, phosphides, sulfides and hybrid nanoparticles. The structures and morphologies of the carbon matrix as well as compositions of nanoparticles have great influence on the catalytic performance. Numerous catalysts display excellent ORR activity and stability in alkaline media but only a few are efficient in acidic media. In addition, challenges and further strategies on the development of this type of carbon encapsulated nanoparticles catalysts are also proposed.

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“…[1][2][3] However,p recious metals are expensivea nd scarce, which hinders their practical applicationsi ni ndustry. [7][8][9][10][11][12][13] Among these noble-metal-free catalysts, catalytically active carbon materials are one class of the most promising candidates. [7][8][9][10][11][12][13] Among these noble-metal-free catalysts, catalytically active carbon materials are one class of the most promising candidates.…”

Section: Introductionmentioning

confidence: 99%

“…However, precious metals are expensive and scarce, which hinders their practical applications in industry . In order to reduce or even replace the precious metals, many efforts have been made in developing non‐precious metal and metal‐free catalysts . Among these noble‐metal‐free catalysts, catalytically active carbon materials are one class of the most promising candidates.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Fluorine‐Codoped Carbon Nanowire Aerogels as Metal‐Free Electrocatalysts for Oxygen Reduction Reaction

Zhu

Song

et al. 2017

Chemistry A European J

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The development of active, durable, and low-cost catalysts to replace noble metal-based materials is highly desirable to promote the sluggish oxygen reduction reaction in fuel cells. Herein, nitrogen and fluorine-codoped three-dimensional carbon nanowire aerogels, composed of interconnected carbon nanowires, were synthesized for the first time by a hydrothermal carbonization process. Owing to their porous nanostructures and heteroatom-doping, the as-prepared carbon nanowire aerogels, with optimized composition, present excellent electrocatalytic activity that is comparable to commercial Pt/C. Remarkably, the aerogels also exhibit superior stability and methanol tolerance. This synthesis procedure paves a new way to design novel heteroatom-doped catalysts.

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Design of active and stable oxygen reduction reaction catalysts by embedding Co x O y nanoparticles into nitrogen-doped carbon

Cited by 27 publications

References 51 publications

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

Recent Progress on Defect‐rich Transition Metal Oxides and Their Energy‐Related Applications

Fe/Co-based nanoparticles encapsulated in heteroatom-doped carbon electrocatalysts for oxygen reduction reaction

Nitrogen and Fluorine‐Codoped Carbon Nanowire Aerogels as Metal‐Free Electrocatalysts for Oxygen Reduction Reaction

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