Mass production of high-performance single atomic FeNC electrocatalysts via sequenced ultrasonic atomization and pyrolysis process

Ma, Jugang; Wang, Liguang; Deng, Yida; Zhang, Weiwei; Wu, Tianpin; Song, Yujun

doi:10.1007/s40843-020-1464-6

Cited by 16 publications

(5 citation statements)

References 54 publications

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“…High-temperature operation with mature technology is the most commonly used method to synthesize all kinds of DACs [166][167][168][169]. Simply speaking, the metal precursor of the target product is mixed with the carbonaceous material as the supporting substrate and then pyrolyzed [170,171]. However, due to the instability under high temperature, a series of different catalytic site configurations outside the ideal dual-atom structure will be generated, such as the single metal sites, irregular metal sites of mononuclear DACs and even small part of agglomeration.…”

Section: High-temperature Pyrolysis Methodsmentioning

confidence: 99%

Heteronuclear dual-metal atom catalysts for nanocatalytic tumor therapy

Han

Guan

2023

Chinese Journal of Catalysis

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Section: High-temperature Pyrolysis Methodsmentioning

confidence: 99%

Heteronuclear dual-metal atom catalysts for nanocatalytic tumor therapy

Han

Guan

2023

Chinese Journal of Catalysis

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“…Moreover, the isolated Fe sites could be loaded on a golf-ball-like/cube-like porous carbon substrate or porous carbon nanospheres, part of which could also realize gram-level production and good ZAB performance. [136][137][138] Besides, research found that a suitable surface wettability of electrocatalysts has a positive impact on forming a three-phase boundary during the catalytic process, facilitating water removal, and abundant oxygen diffusion. [139] Therefore, a highly effective Fe-based SAC for ORR and ZABs was reported via fabricating a mesoporous structure and tuning the hydrophobicity/hydrophilicity properties (Figure 6d).…”

Section: Nanostructuresmentioning

confidence: 99%

Recent Progress on Fe‐Based Single/Dual‐Atom Catalysts for Zn–Air Batteries

Liu

et al. 2022

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Among metal-air batteries, especially for aqueous zinc-air batteries (ZABs), have recently attracted increasing attention, due to their advantages with respect to the abovementioned shortcomings of the LIB, for example, their five-times higher (1086 W h kg −1 ) specific energy density, lower manufacturing cost (≈10$ kW −1 h −1 ), and lower toxi city and intrinsic safety derived from the aqueous property. [18][19][20][21][22] Generally, ZABs are composed of four parts, the air electrode, electrolyte, separator, and Zn metal electrode. As the main reactions on air electrodes during charging/discharging processes, oxygen evolution/reduction reactions (OER/ ORR) are usually limited by their sluggish kinetics, resulting in higher overpotential, unsatisfactory energy efficiency, lower power density, and poor cycling stability, all of which could severely restrict the commercialization of ZABs. Thus, to deal with this situation, great efforts have been afforded to developing highly efficient oxygen electrocatalysts with lower costs.Noble-metal-based materials (Ru, Pt, Ir, and their alloys) have usually been considered as the benchmark of advanced electrocatalysts, owing to their strong catalytic ability toward the ORR and OER, but unfortunately, their high prices have hindered their wide and large-scale application. Recently, Fe-based singleatom catalysts (SACs) and dual-atom catalysts (DACs) have attracted great attention. Compared with other transition metalbased SACs, such as Co, Ni, and Mn, experimental results and theoretical calculation has been confirmed that the Fe-N structure possessed highest ORR activity and outstanding OER performance due to the appropriate adsorption/desorption energy of the oxygen-containing intermediates during the catalytic procedure. [23,24] Besides, with regard of general Fe-C moiety and Fe cluster, Fe-N structure not only displayed lower kinetics barrier owing to the reduced free energy for the step from O* to the OOH*, but also the firm connection between Fe atoms and N atoms could take the responsibility for their better catalytic stability. [25] Based on those advantages, the Fe-N x has laid a solid foundation of serving as bifunctional oxygen electrocatalysis, offering a promising strategy to construct effective air electrodes of ZABs (Figure 1). [26][27][28][29][30][31] In 2017, Chen et al. successfully anchored atomically dispersed Fe-N x on S-doped hierarchical carbon layers and were the first applied to ZABs. [32] Benefitting from the abundance of single-atom active sites, the uneven charge distribution caused by the N and S codopants, and its outstanding electrical conductivity, the electrocatalyst showed Pt-like performance toward the OER (η 10 , the overpotential at a As one of the most competitive candidates for large-scale energy storage, zincair batteries (ZABs) have attracted great attention due to their high theoretical specific energy density, low toxicity, high abundance, and high safety. It is highly desirable but still remains a huge challenge, however, to achieve ...

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“…1a). The aqueous solution of tetraamminepalladium nitrate ([Pd(NH 3 ) 4 ](NO 3 ) 2 , 2.45 mmol L −1 ) was atomized into very small drops of ~40 μm 3 in volume by an ultrasonic atomizer 27,28 and sprayed at a rate of ~40 mL h −1 onto FeO x , which was spread out evenly on the iron basin. The infrared lamps and the heating plate were employed to remove the moisture quickly by heating the FeO x powders to over 60 °C.…”

Section: Synthesis Of Pd Sacs With the Precursor-atomization Strategymentioning

confidence: 99%

Building up libraries and production line for single atom catalysts with precursor-atomization strategy

Zhang

et al. 2022

Nat Commun

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Having the excellent catalytic performance, single atom catalysts (SACs) arouse extensive research interest. However, the application of SACs is hindered by the lack of versatile and scalable preparation approaches. Here, we show a precursor-atomization strategy to produce SACs, involving the spray of droplets of solutions containing metal precursors onto support surface through ultrasonic atomization and the subsequent calcination. This approach is versatile to successful synthesis of a series of catalysts, including 19 SACs with different metal sites and supports and 3 derivatives of SACs (single atom alloys, double atom catalysts and bi-metallic SACs). Furthermore, it can be scaled up by a homemade production line with productivity over 1 kg day−1, and the well-controlled catalyst uniformity is evidenced by the identical characterization results and catalytic properties in Suzuki-Miyaura cross-coupling. This strategy lays a foundation for further investigation and may accelerate the trend from basic research to industrial applications of SACs.

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Mass production of high-performance single atomic FeNC electrocatalysts via sequenced ultrasonic atomization and pyrolysis process

Cited by 16 publications

References 54 publications

Heteronuclear dual-metal atom catalysts for nanocatalytic tumor therapy

Heteronuclear dual-metal atom catalysts for nanocatalytic tumor therapy

Recent Progress on Fe‐Based Single/Dual‐Atom Catalysts for Zn–Air Batteries

Building up libraries and production line for single atom catalysts with precursor-atomization strategy

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