Quantitative video-rate hydration imaging of Nafion proton exchange membranes with terahertz radiation

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https://doi.org/10.1016/j.jpowsour.2019.227665
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Keywords

Terahertz imaging, Nafion, Hydration, Fuel cell

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Quantitative video-rate hydration imaging of Nafion proton exchange membranes with terahertz radiation. / Alves De Lima, Decio; Letizia, Rosa ; Degl'Innocenti, Riccardo et al.
In: Journal of Power Sources, Vol. 450, 227665, 29.02.2020.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Bibtex

@article{7f7c76b276ce44a0818badcf54dc974c,

title = "Quantitative video-rate hydration imaging of Nafion proton exchange membranes with terahertz radiation",

abstract = "Nafion membranes are considered as the industry standard electrolyte material for proton exchange membrane fuel cells. These membranes require adequate hydration in order to reach a high proton conductivity. The relatively high sensitivity of terahertz radiation to liquid water enables contrast to be observed for inspecting water presence in Nafion electrolyte membranes. Utilising a commercially available terahertz source and camera, this paper investigates the feasibility of a compact terahertz imaging system for visualising and quantifying liquid water during an ambient air desorption process for Nafion membranes of a wide range of thicknesses – NRE-212 (50 μm), N-115 (127 μm), N-117 (180 μm) and N-1110 (254 μm). We demonstrate that the terahertz imaging system is able to quantify liquid water in the 25–500 μm thickness range, estimate membrane weight change related to liquid water desorption, which correlated well against simultaneous gravimetric analysis and visualise the room temperature liquid water desorption process of a partially hydrated Nafion N-117 membrane.",

keywords = "Terahertz imaging, Nafion, Hydration, Fuel cell",

author = "{Alves De Lima}, Decio and Rosa Letizia and Riccardo Degl'Innocenti and Richard Dawson and Hungyen Lin",

year = "2020",

month = feb,

day = "29",

doi = "10.1016/j.jpowsour.2019.227665",

language = "English",

volume = "450",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Quantitative video-rate hydration imaging of Nafion proton exchange membranes with terahertz radiation

AU - Alves De Lima, Decio

AU - Letizia, Rosa

AU - Degl'Innocenti, Riccardo

AU - Dawson, Richard

AU - Lin, Hungyen

PY - 2020/2/29

Y1 - 2020/2/29

N2 - Nafion membranes are considered as the industry standard electrolyte material for proton exchange membrane fuel cells. These membranes require adequate hydration in order to reach a high proton conductivity. The relatively high sensitivity of terahertz radiation to liquid water enables contrast to be observed for inspecting water presence in Nafion electrolyte membranes. Utilising a commercially available terahertz source and camera, this paper investigates the feasibility of a compact terahertz imaging system for visualising and quantifying liquid water during an ambient air desorption process for Nafion membranes of a wide range of thicknesses – NRE-212 (50 μm), N-115 (127 μm), N-117 (180 μm) and N-1110 (254 μm). We demonstrate that the terahertz imaging system is able to quantify liquid water in the 25–500 μm thickness range, estimate membrane weight change related to liquid water desorption, which correlated well against simultaneous gravimetric analysis and visualise the room temperature liquid water desorption process of a partially hydrated Nafion N-117 membrane.

AB - Nafion membranes are considered as the industry standard electrolyte material for proton exchange membrane fuel cells. These membranes require adequate hydration in order to reach a high proton conductivity. The relatively high sensitivity of terahertz radiation to liquid water enables contrast to be observed for inspecting water presence in Nafion electrolyte membranes. Utilising a commercially available terahertz source and camera, this paper investigates the feasibility of a compact terahertz imaging system for visualising and quantifying liquid water during an ambient air desorption process for Nafion membranes of a wide range of thicknesses – NRE-212 (50 μm), N-115 (127 μm), N-117 (180 μm) and N-1110 (254 μm). We demonstrate that the terahertz imaging system is able to quantify liquid water in the 25–500 μm thickness range, estimate membrane weight change related to liquid water desorption, which correlated well against simultaneous gravimetric analysis and visualise the room temperature liquid water desorption process of a partially hydrated Nafion N-117 membrane.

KW - Terahertz imaging

KW - Nafion

KW - Hydration

KW - Fuel cell

U2 - 10.1016/j.jpowsour.2019.227665

DO - 10.1016/j.jpowsour.2019.227665

M3 - Journal article

VL - 450

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

M1 - 227665

ER -

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