Abstract: An embodiment fuel cell cooling control system including an inlet temperature sensor configured to detect a coolant inlet temperature including a temperature of a coolant supplied to a coolant inlet of a fuel cell stack, an outlet temperature sensor configured to detect a coolant outlet temperature including the temperature of the coolant discharged from a coolant outlet of the fuel cell stack, a pressure detector configured to detect a gas inlet pressure including a pressure of air supplied to a cathode-side inlet of the fuel cell stack, and a controller configured to estimate a reaction surface temperature in a cell of the fuel cell stack based on the coolant inlet temperature, the coolant outlet temperature, and the gas inlet pressure and to control a flow rate of the coolant supplied to the fuel cell stack according to the estimated reaction surface temperature.

Abstract: Disclosed herein is a cathode structure, a membrane-electrode assembly including the same, and a fuel cell including the same.

Abstract: An inspection apparatus of an electrolyte membrane is provided. The apparatus includes a lower supporter having a gas line through which gas flows or a concave portion that stores the gas. An upper supporter is disposed at an upper side of the lower supporter, and includes an opening. A membrane-electrode assembly is disposed between the lower supporter and the upper supporter. An upper cover covers an upper portion of the opening, and is formed with a plurality of partitions. An exhaust port is formed at the upper supporter to exhaust deionized water.

Abstract: An inspection apparatus of an electrolyte membrane is provided. The apparatus includes a lower supporter having a gas line through which gas flows or a concave portion that stores the gas. An upper supporter is disposed at an upper side of the lower supporter, and includes an opening. A membrane-electrode assembly is disposed between the lower supporter and the upper supporter. An upper cover covers an upper portion of the opening, and is formed with a plurality of partitions. An exhaust port is formed at the upper supporter to exhaust deionized water.

Abstract: An inspection apparatus of an electrolyte membrane is provided. The apparatus includes a lower supporter having a gas line through which gas flows or a concave portion that stores the gas. An upper supporter is disposed at an upper side of the lower supporter, and includes an opening. A membrane-electrode assembly is disposed between the lower supporter and the upper supporter. An upper cover covers an upper portion of the opening, and is formed with a plurality of partitions. An exhaust port is formed at the upper supporter to exhaust deionized water.

Abstract: A method for diagnosing a state of a fuel cell stack as being contaminated includes measuring an impedance of a fuel cell stack at a predetermined low frequency and a predetermined high frequency, increasing an amount of fuel or oxidizer supplied to the fuel cell stack when the impedance at the predetermined high frequency is lower than a first critical point and the impedance at the predetermined low frequency is higher than a second critical point, remeasuring the impedance of the fuel cell stack at the predetermined low frequency, and determining that the fuel cell stack is contaminated when the impedance at the predetermined low frequency that is measured in the remeasuring step is higher than the second critical point.

Abstract: A method for diagnosing a state of a fuel cell stack as being contaminated includes measuring an impedance of a fuel cell stack at a predetermined low frequency and a predetermined high frequency, increasing an amount of fuel or oxidizer supplied to the fuel cell stack when the impedance at the predetermined high frequency is lower than a first critical point and the impedance at the predetermined low frequency is higher than a second critical point, remeasuring the impedance of the fuel cell stack at the predetermined low frequency, and determining that the fuel cell stack is contaminated when the impedance at the predetermined low frequency that is measured in the remeasuring step is higher than the second critical point.

Abstract: An inspection apparatus of an electrolyte membrane is provided. The apparatus includes a lower supporter having a gas line through which gas flows or a concave portion that stores the gas. An upper supporter is disposed at an upper side of the lower supporter, and includes an opening. A membrane-electrode assembly is disposed between the lower supporter and the upper supporter. An upper cover covers an upper portion of the opening, and is formed with a plurality of partitions. An exhaust port is formed at the upper supporter to exhaust deionized water.