Unravelling inherent electrocatalysis of mixed-conducting oxide activated by metal nanoparticle for fuel cell electrodes

Choi, Yoonseok; Keun, Seung; Ha, Hyunwoo; Lee, Siwon; Seo, Hyeon Kook; Lee, Jun Young; Kim, Hyun You; Kim, Sang Ouk; Jung, WooChul

doi:10.1038/s41565-019-0367-4

Cited by 88 publications

(71 citation statements)

References 50 publications

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“…According to the type of fuel, fuel cells can be classified into three types: 1) direct alcohol (methanol, ethanol, isopropanol, ethylene glycol, and glycerol), 2) direct formic acid, and 3) hydrogen oxygen. [ 82–86 ] Fuel oxidation occurs via parallel pathways. To further promote the practical application of fuel cells, a deep understanding of the anode FOR is highly required.…”

Section: Fundamental Of Fuel Cellsmentioning

confidence: 99%

Recent Progress of Ultrathin 2D Pd‐Based Nanomaterials for Fuel Cell Electrocatalysis

Shang

Wang

et al. 2021

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Pd‐ and Pd‐based catalysts have emerged as potential alternatives to Pt‐ and Pt‐based catalysts for numerous electrocatalytic reactions, particularly fuel cell‐related reactions, including the anodic fuel oxidation reaction (FOR) and cathodic oxygen reduction reaction (ORR). The creation of Pd‐ and Pd‐based architectures with large surface areas, numerous low‐coordinated atoms, and high density of defects and edges is the most promising strategy for improving the electrocatalytic performance of fuel cells. Recently, 2D Pd‐based nanomaterials with single or few atom thickness have attracted increasing interest as potential candidates for both the ORR and FOR, owing to their remarkable advantages, including high intrinsic activity, high electron mobility, and straightforward surface functionalization. In this review, the recent advances in 2D Pd‐based nanomaterials for the FOR and ORR are summarized. A fundamental understanding of the FOR and ORR is elaborated. Subsequently, the advantages and latest advances in 2D Pd‐based nanomaterials for the FOR and ORR are scientifically and systematically summarized. A systematic discussion of the synthesis methods is also included which should guide researchers toward more efficient 2D Pd‐based electrocatalysts. Lastly, the future outlook and trends in the development of 2D Pd‐based nanomaterials toward fuel cell development are also presented.

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Section: Fundamental Of Fuel Cellsmentioning

confidence: 99%

Recent Progress of Ultrathin 2D Pd‐Based Nanomaterials for Fuel Cell Electrocatalysis

Shang

Wang

et al. 2021

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159

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“…In this structure, due to the local metal–semiconductor interface effect, Au nanoparticles can transfer electrons to NiFe and change their charge distribution, thereby further improving the catalytic performance. Subsequently, Jung and co‐workers [ 21 ] showed through simulation studies that metal nanoparticles accelerated the overall electrocatalytic reaction kinetics and activated the hydrolytic absorption at the metal–semiconductor interface by donating extra electrons, thereby reducing the electrocatalytic reaction barrier. These reports indicate that metal loading is an effective strategy to improve the catalytic activity of 2D semiconductor electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Black Phosphorus Nanosheets Modified with Au Nanoparticles as High Conductivity and High Activity Electrocatalyst for Oxygen Evolution Reaction

Qiao

Liu

Huang

et al. 2020

Advanced Energy Materials

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clean and sustainable strategy to produce O 2. [1] To date, metallic materials, including Pt, Ir, and Ru, are still the most effective electrocatalytic OER materials owing to their excellent carrier mobilities and high catalytic activities. [2] However, from a commercial perspective, the expensive cost of these precious metals has limited their practical application. [3] As a result, there is an urgent need to find low-cost materials and high-performance electrocatalytic OER materials as substitutes for precious metals. With the advent of graphene, 2D materials have gradually appeared in the field of vision and are considered as good candidates for electrocatalytic OER materials due to their excellent electronic properties and catalytic activities. Previous reports have confirmed that 2D materials have excellent electrocatalytic OER properties, such as MoS 2 , [4] WS 2 , [5] and MXenes. [6] Recently, a new singleelement 2D material, black phosphorus (BP), has been successfully synthesized, which has excellent carrier mobility (1000 cm 2 V −1 s −1 at ten-layer thickness [7]) and good catalytic activity. [8] Therefore, it is widely used in the field of catalysis, especially as an electrocatalytic OER material. [9] For instance, Wang and co-workers [10] adopted a simple method to grow BP nanosheets on a carbon nanotube network and showed excellent electrocatalytic OER performance. Although many studies have reported that BP nanosheets have shown good applications in the field of electrocatalytic OER, its high overpotential and limited catalytic activity still needs to be further improved. Therefore, it is crucial to improve the electrocatalytic OER performance of BP through various strategies. It is well known that the main factors that determine the performance of electrocatalyst OER include the number of catalytic active site, electrical conductivity, and catalytic activity. [3,11] Our previous work has reported [12] that reducing the number of layers of BP nanosheets can expose more reactive sites to enhance its electrocatalytic performance. The experimental results show that with the degree of BP nanosheets, its electrocatalytic oxygen evolution performance is continuously

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“…[4] In this context, enormous efforts have been devoted towards developing efficient, low-cost anode electrocatalysts for HzOR to replace the costly state-of-the-art platinum (Pt) based nanomaterials, [5][6][7] along with optimizing the electrode fabrication craft. [8,9] Recently,s ingle-atom catalysts,e specially atomically dispersed metals anchored on conductive nitrogen (N)-doped carbons (AMCs), have been intensively studied for numerous applications [10][11][12][13][14][15] because of their maximized atom utilization, unusual electronic structure and intriguing properties that differ from their nanoparticles (NPs) counterpart in terms of that is,improved activity and/or selectivity. [16,17] Although there has been progress in the design of AMCs by pyrolysis of carefully engineered metal/carbon precursors (i.e.m etal-organic frameworks (MOFs), [18] in which metal atoms were coordinated with Na toms and in the form of typical MN n atomic configuration (n represents coordination number), controlling the aggregation of single atoms in carbons during synthesis and in the later utilization remains challenging,b ecause the high surface energy makes them easily aggregate into NPs at high pyrolysis temperature and in complex catalytic reactions,w hich decrease their activity.…”

Section: Introductionmentioning

confidence: 99%

Atomically Dispersed Semimetallic Selenium on Porous Carbon Membrane as an Electrode for Hydrazine Fuel Cells

Wang

et al. 2019

Angew Chem Int Ed

104

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Electrochemically functional porous membranes of low cost are appealing in various electrochemical devices used in modern environmental and energy technologies.H erein we describe as calable strategy to construct electrochemically active,h ierarchically porous carbon membranes containing atomically dispersed semi-metallic Se,d enoted SeNCM. The isolated Se atoms were stabilized by carbon atoms in the form of ah exatomic ring structure,i nw hich the Se atoms were located at the edges of graphitic domains in SeNCM. This configuration is different from that of previously reported transition/noble metal single atom catalysts.T he positively charged Se,e nlarged graphitic layers,r obust electrochemical nature of SeNCM endow them with excellent catalytic activity that is superior to state-of-the-art commercial Pt/C catalyst. It also has long-term operational stability for hydrazine oxidation reaction in practical hydrazine fuel cell.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Unravelling inherent electrocatalysis of mixed-conducting oxide activated by metal nanoparticle for fuel cell electrodes

Cited by 88 publications

References 50 publications

Recent Progress of Ultrathin 2D Pd‐Based Nanomaterials for Fuel Cell Electrocatalysis

Recent Progress of Ultrathin 2D Pd‐Based Nanomaterials for Fuel Cell Electrocatalysis

Black Phosphorus Nanosheets Modified with Au Nanoparticles as High Conductivity and High Activity Electrocatalyst for Oxygen Evolution Reaction

Atomically Dispersed Semimetallic Selenium on Porous Carbon Membrane as an Electrode for Hydrazine Fuel Cells

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