Dataset of standard tests of Nafion 112 membrane and Membrane Electrode Assembly (MEA) activation tests of Proton Exchange Membrane (PEM) fuel cell

: Reported data in this paper are about Nafion 112 membrane standard tests and MEA activation tests of PEM fuel cell in various operation condition. Dataset include two general electrochemical analysis method, Polarization and Impedance curves. In this dataset, effect of different pressure of H 2 /O 2 gas, different voltages and various humidity conditions in several steps are considered. Details of experimental methods has been explained in this paper. Behavior of PEM fuel cell during distinct operation condition tests, activation procedure and different operation condition before and after activation analysis can be concluded from data. In Polarization curves, voltage and power density change as a function of flows of H 2 /O 2 and relative humidity . Resistance of the used equivalent circuit of fuel cell can be calculated from Impedance data. Thus, experimental response of the cell is obvious in the presented data, which is useful in depth analysis, simulation and material performance investigation in PEM fuel cell researches.


1-Data Introduction
The experimentally resulted data shows the performance of a PEMFC at several percent of membrane compression, different applied voltages, different pressure of H2/O2 gas, and various humidity conditions of cathode and air, which can be used to study behavior of PEMFC that is necessary to research and development of fuel cells. In other words, the dataset help researchers and specialists who investigate and work on PEM fuel cells [1].
Polarization and Impedance curves have obtained from specific empirical operation condition. MEA structure defines as composition of anode, membrane and cathode. Temperature of anode, cathode and cell, pressure and flow rate of H2/O2 (ml.min -1 ) have been considered as operation condition during the evaluation. In Polarization curves, cell voltage (V) per current density (mA.cm -2 ) and cell power density (mW.cm -2 ) per current density (mA.cm -2 ) has been obtained at various relative humidity, gas pressure and membrane compression. Impedance analysis were done at the end of the each activation set and procedure at different cell voltages, relative humidity and H2/O2 pressure. Also, in each activation procedure, analysis has been accomplished by repeat of activation sets [2].
Obtained data can be useful for simulation of PEMFC and simulation has important role in scientific and applied studies. The report provides necessary results and experimentally parameters such as temperature of anode, cathode and cell, pressure and flow rate of gasses, relative humidity, power density, current density, voltage and resistances of cells which are obligatory data for electrochemical, material, mechanical and electrical simulation of PEMFCs. Hence, obtained data used for simulation of PEM in OPEM [3] simulation software produced by Electrochemistry Simulation (ECSIM) organization research team and those are compatible with the most of used models ,especially, Amphlett model [4] in OPEM software. The reported dataset is available on ECSIM organization GitHub account [5]. This work is licensed under a Creative Commons if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material [6].    (1)(2), the values are: power density, current density and resistance.

2-2-Activation test of MEA
The start procedure for a new fuel cell membrane electrode assembly MEA may vary somewhat from application to application. What is important in any research or production environment is to be consistent with break in procedure that can be used. How the MEA is initially       9 Figure (4-2) Polarization curves at end of each activation set in 17 sets.

2-2-3 Activation test MEA at Constant Voltage 0.6 V 2-2-3-1 Experimental design, method and details
Composition of anode including CP (TGP-0120), Pt/C 20%, 30% Nafion,   Activation of MEA at constant voltage 0.6 V repeated in exact MEA structure and operation condition but, after a treatment procedure. In first treatment method, electrodes were ultrasonicated in 10% Isopropyl solution for 60 min at 60 o C. In Second treatment method, ultrasonication of electrodes was in water for 60 minutes at 60 o C but, this treatment method has some differences in MEA structure, anode composition is A16: CP (TGP-0120), Pt/C 20%, 30% Nafion, and 1.98 mg DL.cm -2 with 0.396 mg .cm -2 catalyst loading. Also, cathode composition is A16: CP (TGP-0120), Pt/C 20%, 30% Nafion, and 1.98 mg DL.cm -2 with 0.4 DL.cm -2 catalyst loading. Figures (6-2) and  show polarization curves at the end of activation set in 9 sets for ultra-sonication in Isopropyl solution and water, respectively. Tables (5-2) and (6-2) represents extracted data from polarization curves of figures (6-2) and (7-2), in order.  In final step of activation test at constant voltage 0.6 V, analysis was done at different MEA structure without treatment procedure. Anode components are C39: CP (TGP-0120), Pt/C 20%, 30% Nafion with 0.42 mg.cm -2 catalyst loading. Cathode composition is A16: CP (TGP-0120), Pt/C 20%, 30% Nafion with 0.396 mg.cm -2 catalyst loading. Table (7-2) and figure  are related to polarization curve at the end of activation set in 9 sets.   loading. In activation procedure, 10 minutes OCV time and then, 60 minutes constant voltage 0.6 V was applied. In next steps, 14 minutes cycling potential between 0.7-0.5 V repeated for 10 times and a constant current 0.2 A.cm -2 for 18 hours was applied. Table (