Understanding the Distribution of Degradation Factors via Enhanced Diagnostics

Abstract

With the use of resistance, activation, and diffusion polarizations, our diagnostics assesses the transient reaction of the PEFC and uses this response to produce diagnostics parameters. By using this diagnostics method on PEFC short stack or PEFC single cell with a quadrisection separator, we have been able to clarify the distribution and degradation factors (the three polarizations). Ultimately, Tsuruga Electric Corporation has used this diagnostic technique to sell maintenance equipment under the PEFC Performance Diagnostics System (PPSD) "356 TD" name. The cost of conventional diagnostic equipment is prohibitive, and the analysis time is excessive. Nevertheless, our device, the 356TD, is far less expensive than traditional ones and can identify deterioration factors and do an impedance study by monitoring the transient response for roughly a minute.