Mathematical methodology and software package for investigation of nonstationary hydrogen permeability in membranes used in electrolysers and hydrogen fuel cells

Beckman, I.N.; Bessarabov, Dmitri; Buntseva, I. M.

doi:10.1016/j.ijhydene.2017.01.237

Cited by 2 publications

(1 citation statement)

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“…The relationship that can be expressed as [147] P m = D × S Where P m ꞊ Permeability, molcms -1 cm -2 Pa -1 called Barrier D ꞊ diffusivity, cm 2 s -1 S ꞊ solubility, molcm -3 Pa -1 Fig. 16 [148] shows a diagrammatical representation of gas transportation in a membrane of proton electron membrane coated with catalyst including all the different activities represented with arrows. These activities are labelled using arrows 1 through 5.…”

Section: Gas Permeationmentioning

confidence: 99%

Fuel cell membranes – Pros and cons

Ogungbemi

Ijaodola

Khatib

et al. 2019

Energy

186

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This investigation provides a critical analysis of the development of PEM fuel cells and related research with specific focus on the membrane material. The catalytic membrane is the most important component of the PEMFC giving rise to the need for the use of efficient, durable and cheap material to reduce the overall cost of the fuel cell. In this work, the need for materials other than Nafion to be used as PEM membranes is established and a case for the use of composite membranes material in fuel cells is made. Composite membranes increase the cell voltage by up to 11% even at high cell operating temperature of 95°C. They also increase the overall performance of the cell by up to 17% when dry hydrogen is utilised.Non-fluorinated membranes are also suitable for use in fuel cells for portable applications but they are very expensive and less conductive. Partially fluorinated membranes have good mechanical stability but expensive. The fluorinated membrane has high stability under oxidation and reduction conditions. Unfortunately, they only reach their optimum performance at ACCEPTED MANUSCRIPT 1 temperatures below 100°C which makes them of limited use in PEM fuel cells application at higher temperatures.

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Section: Gas Permeationmentioning

confidence: 99%