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Improving the Performance of Membrane Electrode Assembly CO2 Electrolyzers.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Improving the Performance of Membrane Electrode Assembly CO2 Electrolyzers./
作者:	Shafaque, Hisan Waleed.
面頁冊數:	1 online resource (128 pages)
附註:	Source: Masters Abstracts International, Volume: 83-02.
Contained By:	Masters Abstracts International83-02.
標題:	Mechanical engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28315394click for full text (PQDT)
ISBN:	9798522912062

Improving the Performance of Membrane Electrode Assembly CO2 Electrolyzers.
Shafaque, Hisan Waleed.

Improving the Performance of Membrane Electrode Assembly CO2 Electrolyzers. - 1 online resource (128 pages)

Source: Masters Abstracts International, Volume: 83-02.

Thesis (M.A.S.)--University of Toronto (Canada), 2021.

Includes bibliographical references

Detrimental ohmic and mass transport overvoltages experienced by the membrane electrode assembly (MEA) CO2 electrolyzer pose critical barriers to the transition from lab scale to large scale operation. The operating temperature was found to be a critical parameter for improving the performance as the power density was reduced by up to 35 % when increasing the temperature from 25 °C to 60 °C. At low current densities, increasing temperature also led to a 7 fold reduction in ohmic resistance. At higher current densities, overvoltages were dominated by distinct mass transport limitations at the gas diffusion electrodes. Additionally, a high current density of 755 mA/cm2 was reached by fully humidifying the reactant CO2. The power density was reduced by up to 30 % as a result of a 4-fold decrease in ohmic losses. The findings of this thesis provide valuable insights for achieving higher current densities at low cell voltages for CO2 electrolyzers.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798522912062Subjects--Topical Terms:

649730
Mechanical engineering.
Subjects--Index Terms:

Carbon dioxide electrolyzerIndex Terms--Genre/Form:

542853
Electronic books.

Improving the Performance of Membrane Electrode Assembly CO2 Electrolyzers.
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500 $a Source: Masters Abstracts International, Volume: 83-02.
500 $a Advisor: Bazylak, Aimy.
502 $a Thesis (M.A.S.)--University of Toronto (Canada), 2021.
504 $a Includes bibliographical references
520 $a Detrimental ohmic and mass transport overvoltages experienced by the membrane electrode assembly (MEA) CO2 electrolyzer pose critical barriers to the transition from lab scale to large scale operation. The operating temperature was found to be a critical parameter for improving the performance as the power density was reduced by up to 35 % when increasing the temperature from 25 °C to 60 °C. At low current densities, increasing temperature also led to a 7 fold reduction in ohmic resistance. At higher current densities, overvoltages were dominated by distinct mass transport limitations at the gas diffusion electrodes. Additionally, a high current density of 755 mA/cm2 was reached by fully humidifying the reactant CO2. The power density was reduced by up to 30 % as a result of a 4-fold decrease in ohmic losses. The findings of this thesis provide valuable insights for achieving higher current densities at low cell voltages for CO2 electrolyzers.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2023
538 $a Mode of access: World Wide Web
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650 4 $a Electrodes. $3 629151
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650 4 $a Values. $3 518648
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650 4 $a Potassium. $3 3562093
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650 4 $a Ethanol. $3 1613481
650 4 $a Polymers. $3 535398
650 4 $a Carbon fibers. $3 685794
650 4 $a Electrolytes. $3 656992
650 4 $a Greenhouse gases. $3 797971
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650 4 $a Renewable resources. $3 3559207
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653 $a Carbon dioxide electrolyzer
653 $a Membrane electrode assembly
653 $a Neutron imaging
653 $a Overvoltages
653 $a Synchrotron X-ray imaging
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773 0 $t Masters Abstracts International $g 83-02.
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