Current status of combined systems using alkaline fuel cells and ammonia as a hydrogen carrier

Hejze, Thomas; Besenhard, Jürgen; Kordesch, Karl; Cifrain, Martin; Aronsson, R.

doi:10.1016/j.jpowsour.2007.08.117

Cited by 88 publications

(36 citation statements)

References 8 publications

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“…Hejze et al reported that ammonia can be used for molten hydroxide NaOH/KOH fuel cell at a working temperature of 200-450°C and a power density of 40 mW cm −2 at 450°C was achieved when nickel was used as both cathode and anode (Ganley, 2008;Hejze et al, 2008). Recently, Yang et al (2014) investigated the oxidation of ammonia on Pt/C in molten hydroxide electrolyte.…”

Section: Recent Progress In Direct Ammonia Fuel Cells Alkaline and Almentioning

confidence: 99%

Ammonia as a Suitable Fuel for Fuel Cells

2014

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Ammonia, an important basic chemical, is produced at a scale of 150 million tons per year. Half of hydrogen produced in chemical industry is used for ammonia production. Ammonia containing 17.5 wt% hydrogen is an ideal carbon-free fuel for fuel cells. Compared to hydrogen, ammonia has many advantages. In this mini-review, the suitability of ammonia as fuel for fuel cells, the development of different types of fuel cells using ammonia as the fuel and the potential applications of ammonia fuel cells are briefly reviewed.

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Section: Recent Progress In Direct Ammonia Fuel Cells Alkaline and Almentioning

confidence: 99%

Ammonia as a Suitable Fuel for Fuel Cells

2014

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“…[11][12][13] Recently Hejze et al reported that ammonia can be used for molten hydroxide ͑NaOH/ KOH͒ fuel cell at a working temperature of 200-450°C. 14 However, similar to conventional alkaline fuel cells, the durability of ammonia fuel cells operating with KOH-based electrolytes would be a critical issue due to the reaction between KOH and CO 2 if "free" air is used as oxidant.…”

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confidence: 99%

Direct Ammonia Alkaline Anion-Exchange Membrane Fuel Cells

Lan

Tao

2010

Electrochem. Solid-State Lett.

153

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On-board hydrogen storage remains a big challenge for fuel cell powered electric vehicles. Ammonia contains 17.6 wt % hydrogen and has been recognized as a potential on-board vehicular hydrogen media. Direct ammonia fuel cells are interesting because they do not require an ammonia cracking process to produce hydrogen, whereas conventional proton exchange membrane fuel cells based on acidic membranes such as Nafion are not compatible with NH 3 . Here we report the operation of direct ammonia alkaline anion-exchange fuel cells based on low cost membrane and non-noble catalysts with potential use in transportation and other applications.

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“…Hydrogen production from methanol using a PEM electrolyser was reported in 2008 by Sasikumar et al 164 Ammonia was studied by Hejze et al in a combined system of AFCs as a hydrogen carrier. 165 For an electrolyser using anion exchange membranes, catalyst and membrane development for hydrogen evolution from alcohol and sodium borohydride are still a new area to explore. 166,167 Hydrogen generation from the systems can provide on-site hydrogen generation for mobile applications.…”

Section: Further Development Of Doafc Systemsmentioning

confidence: 99%

Direct oxidation alkaline fuelcells: from materials to systems

Wang

Krewer

et al. 2012

Energy Environ. Sci.

238

153

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Direct oxidation alkaline fuel cells (DOAFCs) possess particular advantages on the possibility of employing low cost non-noble metal catalysts. A wide range of fuels can be used due to superior reaction kinetics in alkaline media. The development of DOAFCs was hindered by the carbonation of electrolyte due to the presence of CO 2 . The application of the anion exchange membrane (AEM) provides the possibility of reducing the effect of carbonation and fuel crossover which is an issue in the proton exchange membrane fuel cells (PEMFCs). The latest developments in alkaline fuel cells are examined in this paper, considering different types of fuels, novel catalysts and anion exchange membranes. Moreover, alkaline fuel cell systems and configurations are studied, particularly the new designs for portable or microelectronic devices. Further development of DOAFCs will rely on novel AEMs with good ionic conductivity and stability, low cost non-Pt catalysts with high activity and good stability for various fuels and oxidant. We envisage that DOAFCs will play a major role in energy research and applications in the near future.

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Current status of combined systems using alkaline fuel cells and ammonia as a hydrogen carrier

Cited by 88 publications

References 8 publications

Ammonia as a Suitable Fuel for Fuel Cells

Ammonia as a Suitable Fuel for Fuel Cells

Direct Ammonia Alkaline Anion-Exchange Membrane Fuel Cells

Direct oxidation alkaline fuelcells: from materials to systems

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