Internal-resistance measuring device for response-delay type fuel cell

摘要

This aims to provide a measuring device for evaluating the power generating characteristics of a response-delay type fuel cell automatically and precisely in a high reproducibility while considering a delay in response to power load fluctuations, and for culturing and rearing microorganism for the power generation effectively. A potentio-/galvano-stat (5) is connected with a microbial fuel cell (7) as one example of the response-delay type fuel cell, and an automatic measurement device (3) is connected with the potentio-/galvano-stat (5). The automatic measurement device (3) is provided with a program function, and measures the internal resistance of the microbial fuel cell (7) at a set timing. For the measurement of the internal resistance, the automatic measurement device (3) instructs the potentio-/galvano-stat (5) to change a current value to flow through the microbial fuel cell (7), and executes, after the voltage value of the microbial fuel cell (7) got stable, the step of measuring and recording the voltage value and the current value, repeatedly while changing the current control value stepwise.