Heterogeneous single-atom catalysis

Wang, Aiqin; Li, Jun; Zhang, Tao

doi:10.1038/s41570-018-0010-1

Cited by 3,231 publications

(2,383 citation statements)

References 147 publications

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“…[95][96][97][98] Moreover, SACs achieve main strategies in electrocatalyst design: increasing the active sites and enhancing the intrinsic activity. [95][96][97][98] Moreover, SACs achieve main strategies in electrocatalyst design: increasing the active sites and enhancing the intrinsic activity.…”

Section: Single Atom Catalysts (Sacs)mentioning

confidence: 99%

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

Zhang

Chen

Xue

et al. 2019

Advanced Energy Materials

327

247

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Lithium‐sulfur (Li‐S) batteries are one of the most promising next‐generation energy‐storage systems. Nevertheless, the sluggish sulfur redox and shuttle effect in Li‐S batteries are the major obstacles to their commercial application. Previous investigations on adsorption for LiPSs have made great progress but cannot restrain the shuttle effect. Catalysts can enhance the reaction kinetics, and then alleviate the shuttle effect. The synergistic relationship between adsorption and catalysis has become the hotspot for research into suppressing the shuttle effect and improving battery performance. Herein, the adsorption‐catalysis synergy in Li‐S batteries is reviewed, the adsorption‐catalysis designs are divided into four categories: adsorption‐catalysis for LiPSs aggregation, polythionate or thiosulfate generation, and sulfur radical formation, as well as other adsorption‐catalysis. Then advanced strategies, future perspectives, and challenges are proposed to aim at long‐life and high‐efficiency Li‐S batteries.

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Section: Single Atom Catalysts (Sacs)mentioning

confidence: 99%

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

Zhang

Chen

Xue

et al. 2019

Advanced Energy Materials

327

247

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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

112

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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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“…[20] Metal-free catalysts,s uch as boron carbide, [23] porous carbon, [24] and their derivatives, [25,26] are alternative materials,o fw hich boron carbide (B 4 C) nanosheets presented the highest FE of 15.95 %a nd ac orresponding NH 3 yield rate of 26.57 mgh À1 mg À1 cat . [28][29][30][31] Considering that nearly all natural N 2 is fixed with the enzyme nitrogenase produced in bacteria, and the active center of the nitrogenase is aM o-based structure, [32] single Mo atoms could be ap romising catalyst. Thea ctivity of metal-based nanocatalysts is highly influenced by their size.…”

mentioning

confidence: 99%

Atomically Dispersed Molybdenum Catalysts for Efficient Ambient Nitrogen Fixation

et al. 2019

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NH 3 synthesis by the electrocatalytic N 2 reduction reaction (NRR) under ambient conditions is an appealing alternative to the currently employed industrial method-the Haber-Boschp rocess-that requires high temperature and pressure.W er eport single Mo atoms anchored to nitrogendoped porous carbon as ac ost-effective catalyst for the NRR. Benefiting from the optimally high density of active sites and hierarchically porous carbon frameworks,t his catalyst achieves ah igh NH 3 yield rate (34.0 AE 3.6 mg NH 3 h À1 mg cat. À1 )a nd ahigh Faradaic efficiency (14.6 AE 1.6 %) in 0.1m KOHatroom temperature.T hese values are considerably higher compared to previously reported non-precious-metal electrocatalysts. Moreover,t his catalyst displays no obvious current drop during a5 0000 sN RR, and high activity and durability are achieved in 0.1m HCl. The findings provideapromising lead for the design of efficient and robust single-atom non-preciousmetal catalysts for the electrocatalytic NRR.

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Heterogeneous single-atom catalysis

Cited by 3,231 publications

References 147 publications

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

Adsorption‐Catalysis Design in the Lithium‐Sulfur Battery

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

Atomically Dispersed Molybdenum Catalysts for Efficient Ambient Nitrogen Fixation

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