A kind of universal fuel cell activation test method
A technology of fuel cells and testing methods, which is applied in fuel cells, electrochemical generators, circuits, etc., and can solve problems such as failure to consider characteristics, unsatisfactory activation effects, and poor adaptability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0051] (1) The temperature of the fuel cell cooling water inlet is set to be 70°C, and the fuel gas (hydrogen) and air with a humidity of 95% are passed into the anode and the cathode of the fuel cell respectively, and the stoichiometric ratio of the fuel gas (hydrogen) passed into is 1.8, the stoichiometric ratio of air is 2.0, and the discharge process is carried out at 0.4A / cm 2 、0.7A / cm 2 , 1.0A / cm 2 、1.3A / cm 2 and 1.6A / cm 2 Run at the current density for 4 minutes sequentially, and run until the current density is 1.0A / cm 2 When the single chip voltage is 0.58V (less than 0.6V), pause;
[0052] (2) Adjust the current density to an activation current density of 0.7A / cm 2 , the inlet pressure of the cathode is 90kPa, the inlet pressure of the anode is 100kPa, and the activation current density is 0.7A / cm 2 Under constant current discharge for 3 hours (the normal value of the single-chip voltage is always greater than 0.64V), the final voltage V2 is 0.67V, and the vari...
Embodiment 2
[0054] The fuel cell cooling water inlet temperature is set to be 70°C, and the fuel gas (hydrogen) and air with a humidity of 95% are passed into the anode and the cathode of the fuel cell respectively, and the stoichiometric ratio of the fuel gas (hydrogen) that is passed into is 1.8, The stoichiometric ratio of the air is 2.0, and the discharge process is carried out, and the fuel gas (hydrogen) and air are respectively passed into the anode and cathode of the fuel cell for the discharge process, respectively at 0.4A / cm 2 、0.7A / cm 2 , 1.0A / cm 2 、1.3A / cm 2 and 1.6A / cm 2 Run at the current density for 4 minutes in sequence, and repeat the operation for 5 cycles (in each cycle, the normal value of the single-chip voltage corresponding to the current density is greater than 0.68V, 0.64V, 0.6V, 0.57V and 0.53V), and the final voltage V1 is 0.55V, and within 15 minutes, the change range is 2mV, and the activation is completed.
Embodiment 3
[0056] (1) The temperature of the fuel cell cooling water inlet is set to be 65°C, and the fuel gas and air with a humidity of 85% are passed into the anode and the cathode of the fuel cell respectively, and the stoichiometric ratio of the fuel gas is 1.7, and the chemical The metering ratio is 2.2, and the discharge process is carried out at 0.4A / cm 2 、0.8A / cm 2 , 1.2A / cm 2 and 1.6A / cm 2 Run at the current density for 5 minutes sequentially, and run until the current density is 1.6A / cm 2 When the single chip voltage is 0.51V (less than 0.53V), pause;
[0057] (2) Adjust the current density to an activation current density of 0.7A / cm 2 , the inlet pressure of the cathode is 100kPa, the inlet pressure of the anode is 110kPa, and the activation current density is 0.7A / cm 2 Under constant current discharge, when running for 2.2 hours, the normal value of the single chip voltage is 0.60V (less than 0.64V), suspend step (2), and adjust the activation current density to 0.8A / cm...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More