Comparison of catalyst-coated membranes and catalyst-coated substrate for PEMFC membrane electrode assembly: A review

Lim, Bee Huah; Majlan, Edy Herianto; Tajuddin, Siti Nor Amalina Ahmad; Husaini, Teuku; Daud, Wan Ramli Wan; Radzuan, Nabilah Afiqah Mohd; Haque, Mahbubul

doi:10.1016/j.cjche.2020.07.044

Cited by 69 publications

(39 citation statements)

References 158 publications

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“…Apart from the GDL, electrocatalysts and ionomers are usually dispersed in isopropyl alcohol (IPA), which is then coated onto the anion exchange membrane to form a catalyst-coated membrane (CCM) to maximize the reaction kinetics and narrow the electron/hydroxide transportation pathways. 93,94 In addition to the CCM, catalyst ink (prepared from catalysts and ionomers) can be also deposited in the gas diffusion layer to form a gas diffusion electrode (GDE), which is also known as a catalyst coated substrate (CCS). [94][95][96] The central part of an MEA is the membrane, which not only needs to have fast conduction of ions and water molecules, but also needs to withstand harsh working conditions such as higher pressure, voltage, and working temperature.…”

Section: Voltage Efficiency ¼mentioning

confidence: 99%

Anion-exchange membrane water electrolyzers and fuel cells

et al. 2022

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Section: Voltage Efficiency ¼mentioning

confidence: 99%

Anion-exchange membrane water electrolyzers and fuel cells

et al. 2022

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“…No rigorous experimental conditions are required for this strategy. 26 Furthermore, the traditional methods for precursor synthesis cause leaching of ZIF-67 from the Ni foam during the washing process, resulting in excessive loss of active metals during the fabrication of catalysts and reduction in their catalytic activity. 27 Therefore, manual coating of MOF powders on the support is a promising strategy to avoid loss of active components and ensure high activity.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The adopted manual coating method for the precursor is simple and less time-consuming as compared to previous coating methods for the fabrication of catalysts. No rigorous experimental conditions are required for this strategy . Furthermore, the traditional methods for precursor synthesis cause leaching of ZIF-67 from the Ni foam during the washing process, resulting in excessive loss of active metals during the fabrication of catalysts and reduction in their catalytic activity .…”

Section: Resultsmentioning

confidence: 99%

Co-Based Nanoparticles Fabricated on Ni Foams for Efficient Hydrogen Generation from Ammonia Borane

Mehdi

Liu

Wei

et al. 2022

ACS Appl. Nano Mater.

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Zeolitic imidazole framework (ZIF-67)-derived Co metal catalysts have gained attention as competitive catalysts due to their high metal loading and superior metal dispersion. However, the problems of Co cluster aggregation during use and difficulty in collection of the powder catalyst from the reaction system need to be solved. In this work, Co-based nanoparticles (NPs) are fabricated on a Ni foam. The monolithic catalyst, Co−NC/NF, has been prepared by the pyrolysis of the ZIF-67/NF precursor using manual coating. The characterization confirms the embedding and uniform distribution of Co NPs (10−20 nm) in the N-doped C matrix. The optimized Co−NC/NF 600 reveals satisfactory catalytic activity upon hydrolysis of ammonia borane with a hydrogen evolution (r B = 1176 mL min −1 g −1 Co ), a turn over frequency (TOF = 180 h −1 ), and an apparent activation energy (E a = 64 kJ mol −1 ). The catalytic activity of Co−NC/NF 600 with Co and CoO x as active sites has the best rank among the previously reported Co monolithic catalysts. The superior stability and reusability of the catalyst with ∼ 90% retention after five uses are demonstrated under mild NH 3 BH 3 hydrolysis conditions, originating from the high antiaggregation ability of the active sites and the easy recollection of the catalyst. The adopted novel strategy has the potential to synthesize monolithic catalysts applicable in other fields of heterogeneous catalysis in industrial applications such as energy storage and conversion.

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“…The sandwich-like structure of PtNi/WCB MEA (MEA: membrane electrode assembly) prepared by catalyst-coated substrates (CCS) is shown in Fig. 3b [54,55]. Fig.…”

Section: Resultsmentioning

confidence: 99%