Solid Acid Electrochemical Cell for the Production of Hydrogen from Ammonia

Lim, Dae‐Kwang; Plymill, Austin; Paik, Haemin; Qian, Xueren; Zečević, S.; Chisholm, Calum R. I.; Haile, Sossina M.

doi:10.1016/j.joule.2020.10.006

Cited by 44 publications

(21 citation statements)

References 45 publications

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“…There have however, been advances in catalyst selection that allow for lower temperatures to be used and sufficient power performance to still be attained, as summarised in Tables 2 and 3. On lowering temperatures, we believe that CsH2PO4 may be a potential electrolyte for intermediate temperature direct ammonia fuel cells since it has shown to be chemically compatible with ammonia at 250 o C. 29 As CsH2PO4 is soluble in water, operating of the fuel cells or electrolysers based on CsH2PO4 electrolyte at a temperature below 100 °C in the presence of liquid water could be difficult.…”

Section: Perspective and Challenges Of Ammonia-fed Sofcsmentioning

confidence: 99%

Recent progress in ammonia fuel cells and their potential applications

2021

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Section: Perspective and Challenges Of Ammonia-fed Sofcsmentioning

confidence: 99%

Recent progress in ammonia fuel cells and their potential applications

2021

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“…Recently, the electro-oxidation of ammonia has emerged as an effective way to remove ammonia owing to its simple equipment and absence of poisonous remains. [11][12][13] Ammonia electrolyzers contain the ammonia oxidation reaction (AOR) at the anode and hydrogen evolution reaction (HER) at the cathode. [12] In alkaline condition, the proposed reactions of an ammonia electrolyzer are: Anode reaction:…”

Section: Introductionmentioning

confidence: 99%

An Efficient Symmetric Electrolyzer Based On Bifunctional Perovskite Catalyst for Ammonia Electrolysis

Zhang

Duan

et al. 2021

Advanced Science

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Ammonia is a natural pollutant in wastewater and removal technique such as ammonia electro-oxidation is of paramount importance. The development of highly efficient and low-costing electrocatalysts for the ammonia oxidation reaction (AOR) and hydrogen evolution reaction (HER) associated with ammonia removal is subsequently crucial. In this study, for the first time, the authors demonstrate that a perovskite oxide LaNi 0.5 Cu 0.5 O 3-𝜹 after being annealed in Ar (LNCO55-Ar), is an excellent non-noble bifunctional catalyst towards both AOR and HER, making it suitable as a symmetric ammonia electrolyser (SAE) in alkaline medium. In contrast, the LNCO55 sample fired in air (LNCO55-Air) is inactive towards AOR and shows very poor HER activity. Through combined experimental results and theoretical calculations, it is found that the superior AOR and HER activities are attributed to the increased active sites, the introduction of oxygen vacancies, the synergistic effect of B-site cations and the different active sites in LNCO55-Ar. At 1.23 V, the assembled SAE demonstrates ≈100% removal efficiency in 2210 ppm ammonia solution and >70% in real landfill leachate. This work opens the door for developments towards bifunctional catalysts, and also takes a profound step towards the development of low-costing and simple device configuration for ammonia electrolysers.

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“…It can be produced renewably, releases no carbon at point of consumption, and, compared to other hydrogen carriers, it is an energy dense liquid under mild conditions, meaning it can be stored cheaply on a timescale of months to years ( Hank et al., 2020 ; Schmidt et al., 2019 ). It is already traded widely on international markets as a fertilizer ( Lim et al, 2020 ). As an energy vector, it can be dispatched on demand – either as ammonia or having been cracked back into hydrogen.…”

Section: Introductionmentioning

confidence: 99%

Optimization of green ammonia distribution systems for intercontinental energy transport

2021

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Summary Green ammonia is a promising hydrogen derivative which enables intercontinental transport of dispatchable renewable energy. This research describes the development of a model which optimizes a global green ammonia network, considering the costs of production, storage, and transport. In generating the model, we show economies of scale for green ammonia production are small beyond 1 million tonnes per annum (MMTPA), although benefits accrue up to a production rate of 10 MMTPA if a production facility is serviced by a new port or requires a long pipeline. The model demonstrates that optimal sites for ammonia production require not only an excellent renewable resource but also ample land from which energy can be harvested. Land limitations constrain project size in otherwise optimal locations and force production to more expensive sites. Comparison of current crude oil markets to future ammonia markets reveals a trend away from global supply hubs and toward demand centers serviced by regional production.

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Solid Acid Electrochemical Cell for the Production of Hydrogen from Ammonia

Cited by 44 publications

References 45 publications

Recent progress in ammonia fuel cells and their potential applications

Recent progress in ammonia fuel cells and their potential applications

An Efficient Symmetric Electrolyzer Based On Bifunctional Perovskite Catalyst for Ammonia Electrolysis

Optimization of green ammonia distribution systems for intercontinental energy transport

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