Spray deposition of sulfonated cellulose nanofibers as electrolyte membranes in fuel cells
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10440167" target="_blank" >RIV/00216208:11320/21:10440167 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=FS_58MnJ85" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=FS_58MnJ85</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10570-020-03593-w" target="_blank" >10.1007/s10570-020-03593-w</a>
Alternative languages
Result language
angličtina
Original language name
Spray deposition of sulfonated cellulose nanofibers as electrolyte membranes in fuel cells
Original language description
Nanocellulose is a promising new membrane material for fuel cells, with much lower cost and environmental impact compared with Nafion or Aquivion. It is mechanically strong, is an excellent hydrogen barrier and has reasonable proton conductivity. Here, sulfonation of cellulose nanofibers is performed to enhance the conductivity (up to 2 x 10(- 3) S cm(- 1)) without compromising the membrane integrity, and fuel cells are fabricated with 30 mu m-thick "paper" membranes. The hydrogen crossover current is two orders of magnitude lower than for Nafion fuel cells with equivalent thickness, but the power density is rather low. Spray-coating is used to deposit 8 mu m-thick membranes directly onto the electrocatalyst layer, in a process analogous to 3D printing or additive manufacturing. The resulting paper fuel cell has high current density (> 0.8 A cm(- 2)) and power density (156 mW cm(- 2)) under standard measurement conditions (H-2/air; 80 degrees C; 95% RH; 0.1 MPa), attributed to decreased membrane resistance. The cost of the spray-painted cellulose membranes is calculated to be similar to 50 $ m(- 2), which is much lower than that of Nafion, even without taking into consideration economies of scale. This new concept in electrochemical energy conversion paves the way for the mass production of affordable, recyclable fuel cells.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/LM2018116" target="_blank" >LM2018116: Surface Physics Laboratory - Materials Science Beamline</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Cellulose
ISSN
0969-0239
e-ISSN
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Volume of the periodical
28
Issue of the periodical within the volume
3
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
1355-1367
UT code for WoS article
000604488100004
EID of the result in the Scopus database
2-s2.0-85098630001