Wasserstoff und Brennstoffzellen

Lehmann, Jochen; Luschtinetz, Thomas

doi:10.1007/978-3-642-34668-2

Cited by 8 publications

(4 citation statements)

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“…Especially for the LT-PEMFC, whose operating temperature is ideally close to 80°C with only small acceptable temperature gradients within the stack, large heat exchanger units are required. Moreover, an electrolyte, such as NafionTM, requires humidification of the membrane of around 30% in order to achieve optimal operating conditions (Mehta and Cooper, 2003;Lehmann and Luschtinetz, 2014). As a consequence, water management and humidification subsystems become necessary, leading to an increased system complexity.…”

Section: Polymer Electrolyte Membrane Fuel Cellsmentioning

confidence: 99%

“…The latter usually contains an acidic alkaline-based electrolyte, which can lead to carbonate ions CO 2À 3 clogging the FC (Kurzweil, 2016). Furthermore, methanol-cross-over of about 30% can occur, reducing the efficiency due to local oxidation of methanol at the cathode (Lehmann and Luschtinetz, 2014;Kurzweil, 2016). The effect can be curbed by increasing the thickness of the membrane (Dincer and Zamfirescu, 2014).…”

Section: Direct Methanol Fuel Cellsmentioning

confidence: 99%

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Review of fuel cell technologies and evaluation of their potential and challenges for electrified propulsion systems in commercial aviation

Kazula

Graaf

Enghardt

2023

J. Glob. Power Propuls. Soc.

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This paper presents an overview of the most relevant fuel cell types and identifies the most promising options for application in propulsion systems for commercial electrified aviation. The general design, operating principles and main characteristics of polymer electrolyte membrane, alkaline, direct methanol, phosphoric acid, molten carbonate and solid oxide fuel cells are described. Evaluation criteria are derived from aviation-specific requirements for the application of fuel cells in electrified aircraft. Based on these criteria, the presented fuel cell types are evaluated by means of a weighted point rating. The results of this evaluation reveal the high potential for application of solid oxide, low-temperature and high-temperature polymer electrolyte membrane fuel cells. Design challenges of all fuel cell types are being emphasised, for instance, concerning cold start, cooling and supply of pressurised air.

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Section: Polymer Electrolyte Membrane Fuel Cellsmentioning

confidence: 99%

Section: Direct Methanol Fuel Cellsmentioning

confidence: 99%

Review of fuel cell technologies and evaluation of their potential and challenges for electrified propulsion systems in commercial aviation

Kazula

Graaf

Enghardt

2023

J. Glob. Power Propuls. Soc.

View full text Add to dashboard Cite

show abstract

“…Especially for the LT-PEMFC, whose operating temperature is ideally close to 80° C with only small acceptable temperature gradients within the stack, large heat exchanger units are required. Moreover, an electrolyte, such as NafionTM, requires humidification of the membrane of around 30% in order to achieve optimal operating conditions (Lehmann and Luschtinetz, 2014;Mehta and Cooper, 2003). As a consequence, water management and humidification subsystems become necessary, leading to an increased system complexity.…”

Section: Figure 1 Fuel Cell Structure Based On Common Lt-pemfc Designsmentioning

confidence: 99%

“…The latter usually contains an acidic alkaline-based electrolyte, which can lead to carbonate ions 𝐶𝑂 2− clogging the FC (Kurzweil, 2016). Furthermore, methanol-cross-over of about 30% can occur, reducing the efficiency due to local oxidation of methanol at the cathode (Lehmann and Luschtinetz, 2014;Kurzweil, 2016). The effect can be curbed by increasing the thickness of the membrane (Dincer and Zamfirescu, 2014).…”

Section: Direct Methanol Fuel Cellsmentioning

confidence: 99%

Review of Fuel Cell Technologies and Evaluation of their Potential and Challenges for Electrified Propulsion Systems in Commercial Aviation

Kazula¹,

Graaf²,

Enghardt³

2022

Proceedings of Global Power &Amp; Propulsion Society

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This paper presents an overview of the most relevant fuel cell types and identifies the most promising options for application in propulsion systems for commercial electrified aviation. The general design, operating principles and main characteristics of polymer electrolyte membrane, alkaline, direct methanol, phosphoric acid, molten carbonate and solid oxide fuel cells are described. Evaluation criteria are derived from aviation-specific requirements for the application of fuel cells in electrified aircraft. Based on these criteria, the presented fuel cell types are evaluated by means of a weighted point rating. The results of this evaluation reveal the high potential for application of solid oxide, low temperature and high temperature polymer electrolyte membrane fuel cells. Design challenges of all fuel cell types are being emphasised, for instance, concerning cold start, cooling and supply of pressurised air.

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Chemie

Petersen¹

2017

Naturwissenschaften Im Fokus IV

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Wasserstoff und Brennstoffzellen

Cited by 8 publications

References 0 publications

Review of fuel cell technologies and evaluation of their potential and challenges for electrified propulsion systems in commercial aviation

Review of fuel cell technologies and evaluation of their potential and challenges for electrified propulsion systems in commercial aviation

Review of Fuel Cell Technologies and Evaluation of their Potential and Challenges for Electrified Propulsion Systems in Commercial Aviation

Chemie

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