Controlled synthesis of porous particles via aerosol processing and their applications

Chang, Hyunju; Jang, Hee Dong

doi:10.1016/j.apt.2013.11.004

Cited by 24 publications

(9 citation statements)

References 44 publications

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“…Here the Ag nanoparticle (NP) is chosen as the conductive additive to MnO x because (1) Ag is less expensive in comparison to other noble metal (e.g., Au, Pt); (2) Ag has a relatively higher operation stability in comparison to transition metals ,, and conducting polymers (e.g., polypyrrole, polyaniline); , and (3) Ag NPs have shown the promise to uniformly distribute with transition metal oxides via a direct gas-phase thermal decomposition of homogeneous aqueous precursors . As depicted in Figure a, droplets of homogeneous Ag and MnO x precursor solution are first created and then precipitation of solid precursor crystallites occurs via gas-phase evaporation-induced self-assembly (EISA), where the multiple components designed for the electrode material are maintained at their molecular level homogeneity within the nanostructure during the spray drying process. − After a downstream thermal decomposition, the aerosols of dried precursor crystallites become spherical Ag–MnO x hybrid nanostructures composed of homogeneously distributed Ag and MnO x crystallites. To our knowledge, this work demonstrates the first published study on the aerosol-based fabrication of Ag nanoparticles decorating manganese oxide hybrid nanostructures as the positive electrode of supercapacitor.…”

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles-Decorating Manganese Oxide Hybrid Nanostructures for Supercapacitor Applications

et al. 2019

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A facile aerosol-based synthetic approach is demonstrated for the fabrication of silver−manganese oxide (Ag−MnO x ) and cetyltrimethylammonium bromide (CTAB)-templated silver−manganese oxide (c-Ag−MnO x ) hybrid nanostructures as the positive electrode materials of supercapacitors. Through gas-phase evaporation-induced selfassembly, silver nanoparticles are homogeneously decorated in the hybrid nanostructure to create a conductive path at the interface of the cluster of MnO x crystallites. The utilization of the capacitance of MnO x increases by the addition of Ag nanoparticles (>2 times for Ag−MnO x and ∼1.7 times for c-Ag−MnO x ). An optimal specific capacitance is achieved when the concentration of the silver precursor (C Ag ) is 0.5 wt %, 118 F g −1 for Ag−MnO x , and 154 F g −1 for c-Ag−MnO x at a specific current of 1 A g −1 . The enhanced supercapacitive performance by the addition of CTAB at low C Ag is attributed to the increased surface area (>19.4%) for electrochemical reactions. The prototype method with mechanistic understanding demonstrated in this study shows promise for the fabrication of a variety of MnO x -based hybrid nanostructures for supercapacitor applications.

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Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles-Decorating Manganese Oxide Hybrid Nanostructures for Supercapacitor Applications

et al. 2019

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“…This led to the creation of the micron-sized porous CeO 2 ASiO 2 composite particles. During the formation of the porous composite particles by the self-assembly aerosol process, it was able to maintain the particle's composition between the colloidal precursor and the final porous composite particles [26,27].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of micron-sized porous CeO2SiO2 composite particles for ultraviolet absorption

Kim

Chang

Jang

2017

Advanced Powder Technology

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“…GO sheets in the colloidal solution were exfoliated by ultrasonic treatment for 1 h 20 min before the aerosol spray pyrolysis process. A description of the experimental procedure used for the aerosol process is available in the literature . The droplets of the colloidal solution generated by an ultrasonic atomizer were carried by argon 1.0 L/min into a pretreated tubular furnace (1073 K).…”

Section: Methodsmentioning

confidence: 99%

Synergetic effect of graphene sheet and three‐dimensional crumpled graphene on the performance of dye‐sensitized solar cells

et al. 2015

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Herein, an improved structure of the dye-sensitized solar cell (DSSC) is demonstrated which is composed of surface modified fluorine-doped tin oxide (FTO) glass with graphene (GR) sheets and TiO 2 films incorporated with threedimensional crumped graphene (3-D CGR)/GR sheets. The morphologies of the as-prepared GR sheets on FTO glasses and 3-D CGR/GR sheets/TiO 2 films were observed by field-emission scanning electron microscopy. Light harvesting and charge recombination kinetics were investigated with a solar simulator and electrochemical impedance spectroscopy analysis. In addition to the reduced charge resistance by the GR modified FTO, the enhanced dye loading capability of the 3-D CGR, and the rapid charge transport by the 2-D GR sheets, the power conversion efficiency was 7.2%, which was an increase of 56% compared to a "conventional" structured DSSC.

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Controlled synthesis of porous particles via aerosol processing and their applications

Cited by 24 publications

References 44 publications

Silver Nanoparticles-Decorating Manganese Oxide Hybrid Nanostructures for Supercapacitor Applications

Silver Nanoparticles-Decorating Manganese Oxide Hybrid Nanostructures for Supercapacitor Applications

Synthesis of micron-sized porous CeO2SiO2 composite particles for ultraviolet absorption

Synergetic effect of graphene sheet and three‐dimensional crumpled graphene on the performance of dye‐sensitized solar cells

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