التفاصيل البيبلوغرافية
| العنوان: |
Determination of time constants of diffusion and electrochemical processes in Polymer Electrolyte Membrane Fuel Cells |
| المؤلفون: |
Iranzo Paricio, José Alfredo, Rosa Iglesias, Manuel Felipe, Berber, Mohamed R. |
| المساهمون: |
Universidad de Sevilla. Departamento de Ingeniería Energética, Ministerio de Economía y Competitividad (España), Junta de Andalucía, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), Ministerio de Ciencia, Innovación y Universidades (España) |
| بيانات النشر: |
Elsevier Ltd |
| سنة النشر: |
2022 |
| المجموعة: |
idUS - Deposito de Investigación Universidad de Sevilla |
| مصطلحات موضوعية: |
Polymer Electrolyte Membrane fuel cell, Electrochemical Impedance Spectroscopy, Time constant, Oxygen diffusion, Damkohler number, High Frequency Resistance |
| الوصف: |
Article number 119833 ; This work presents an experimental analysis of the time constants associated to diffusion and electro chemical processes in a 50 cm2 Polymer Electrolyte Membrane (PEM) fuel cell. The experimental tech niques and results include polarization curves and Electrochemical Impedance Spectroscopy (EIS) analysis of the fuel cell, where the time constants are determined from the analysis of the Distribution of Relaxation Times (DRT). EIS results are also used to determine the cell ohmic resistance, where High Frequency Resistance (HFR) values are calculated from the Nyquist plots. A wide range of operating conditions of the fuel cell are analysed, including back pressure (0.5 bare1 bar), cell temperature (55 C, 65 C, 75 C), reactant gases relative humidity (30%, 60%, 90%), cathode stoichiometry (lc 2.5e3.5), and oxygen concentration (air and pure oxygen). The effect of the operating conditions on the time constants are discussed, and Damkohler number is introduced and discussed. ; Ministerio de Economía y Competitividad (España) UNSE15-CE2962 ; Junta de Andalucía PY20 RE026 AICIA ; Feder (UE) 375213500 ; Ministerio de Ciencia, Innovación y Universidades (España) ENE2017-91159-EXP ; Ministerio de Ciencia, Innovación y Universidades (España) PID2019-104441RB-I00 |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| العلاقة: |
Energy, 221, Article number 119833.; UNSE15-CE2962; PY20 RE026 AICIA; 375213500; ENE2017-91159-EXP; PID2019-104441RB-I00; https://www.sciencedirect.com/science/article/pii/S0360544221000827Test; https://idus.us.es/handle//11441/133487Test |
| الإتاحة: |
https://idus.us.es/handle//11441/133487Test |
| حقوق: |
Attribution-NonCommercial-NoDerivatives 4.0 Internacional ; http://creativecommons.org/licenses/by-nc-nd/4.0Test/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edsbas.BFE28727 |
| قاعدة البيانات: |
BASE |
