Review on fabrication techniques for porous electrodes of solid oxide fuel cells by sacrificial template methods

Hedayat, Nader; Du, Yanhai; Ilkhani, Hoda

doi:10.1016/j.rser.2017.03.095

Cited by 125 publications

(61 citation statements)

References 307 publications

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“…Here we demonstrate that a combination of the casting of these nanocomposites and sacrificial template replication (STR), a concept known from polymer and ceramic processing, is able to produce complex, suspended hollow microstructures in fused silica glass. In sacrificial template replication, a template structure or immiscible phase is introduced into a material and consecutively removed by dissolving, etching or burning to produce a desired hollow structure [35][36][37][38][39]. Nanochannels in glass can be produced by coating of electrospun nanofibers with silicon dioxide and consecutive calcination, but have so far not been shown for fused silica and are restricted to single electrospun fibers and therefore limited to very simple designs [40].…”

Section: Sacrificial Template Replicationmentioning

confidence: 99%

Fabrication of arbitrary three-dimensional suspended hollow microstructures in transparent fused silica glass

et al. 2019

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Fused silica glass is the preferred material for applications which require long-term chemical and mechanical stability as well as excellent optical properties. The manufacturing of complex hollow microstructures within transparent fused silica glass is of particular interest for, among others, the miniaturization of chemical synthesis towards more versatile, configurable and environmentally friendly flow-through chemistry as well as high-quality optical waveguides or capillaries. However, microstructuring of such complex three-dimensional structures in glass has proven evasive due to its high thermal and chemical stability as well as mechanical hardness. Here we present an approach for the generation of hollow microstructures in fused silica glass with high precision and freedom of three-dimensional designs. The process combines the concept of sacrificial template replication with a room-temperature molding process for fused silica glass. The fabricated glass chips are versatile tools for, among other, the advance of miniaturization in chemical synthesis on chip.

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Section: Sacrificial Template Replicationmentioning

confidence: 99%

Fabrication of arbitrary three-dimensional suspended hollow microstructures in transparent fused silica glass

et al. 2019

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“…Porous metal oxides are prominent players in catalytic industries and battery applications. [5,12] There, introducing pores is often performed by hard templating (see Figure 2a). With the short range of their chemical bonds, ceramics are usually brittle, but often resist extreme temperatures and chemical conditions.…”

Section: Ceramicsmentioning

confidence: 99%

Porous Polymer Membranes by Hard Templating – A Review

2017

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Membranes are designed to bridge a precise separation process at the nanoscale with industrial applications running at cubic meters per hour. This review outlines materials applied in membrane production with a particular focus on polymers. Membrane performance and created value are directly linked to controlled pore formation. Their economic relevance has created a number of large companies and associated academic research at top institutions. The authors review, therefore, starts from well-established techniques applied in products and then moves on to evolving concepts from academia. Pore formation through hard templating is a versatile field for separation processes. A more detailed view is given on the two known concepts for nanopore formation, namely colloidal templates and random hard salt templating. A comparison between these two concepts underlines their relevance to combine a process specific separation with large scale manufacturing requirements (i.e., upscale possibility, flexible process control and environmental impact).

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“…In recent years, biological templates have become a major area of research, because they are generally performed under mild conditions, are energy-conserving, green, and have little requirement for equipment [9][10][11][12][13][14][15] Compared with man-made template materials, the natural plant materials have the advantages in cheapness, diversity, and the structural and compositional hierarchical order. 16 Several natural plants, such as diatoms, 17 paulownia xylem, 18 banana peel, 19 pinewood 19 have been used as templates to synthesize porous materials with higher specific surface area and wide pore size distributions (PSDs). 20 In general, these methods consist of the following steps: (i) selection of a regularly arranged template; (ii) filling of the gaps of the template with suitable precursors; (iii) removal of the template.…”

Section: Introductionmentioning

confidence: 99%

Efficient no‐glycerol biodiesel production using a novel biotemplated hierarchical porous‐structure CaO(O)

Tang

Yang

Liu

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND In order to obtain an effective solid base with high surface area and hierarchical distribution of pore size, CaO(O) was synthesized via an exotemplating method, using radish as template and calcium acetate as precursor. RESULTS The CaO(O) obtained by calcination of the impregnated biomorphic template demonstrated effective catalytic activity for the coupling transesterification of vegetable oil to produce biodiesel under mild reaction conditions using tri‐components (methanol, oil and methyl acetate) as resources. High yield of biodiesel, 98.6%, was obtained with a molar rapeseed oil/methyl acetate/methanol ratio of 1:1:8 under 65 °C at 2 h, which is greatly shorter than 6 h over commercial calcium oxide (CaO). CONCLUSION Various techniques including nitrogen physical adsorption, X‐ray diffraction (XRD), Fourier‐transform infrared (FTIR), thermogravimetric (TG), carbon dioxide‐chemical adsorption and morphology have been employed to characterize the samples. These results demonstrated that the synthesized CaO derived from plant template has a large surface area and various pore diameter distribution which cause hierarchical basic sites over the solid base. © 2020 Society of Chemical Industry

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Review on fabrication techniques for porous electrodes of solid oxide fuel cells by sacrificial template methods

Cited by 125 publications

References 307 publications

Fabrication of arbitrary three-dimensional suspended hollow microstructures in transparent fused silica glass

Fabrication of arbitrary three-dimensional suspended hollow microstructures in transparent fused silica glass

Porous Polymer Membranes by Hard Templating – A Review

Efficient no‐glycerol biodiesel production using a novel biotemplated hierarchical porous‐structure CaO(O)

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