Patent ID: 7527882
Filing Date: 2009-05-05
Classification: H01M,Y02E,Y02T

Abstract:
1. A method for detecting undersupply of a fuel gas in power generation by supplying the fuel gas to an anode provided on one surface of an electrolyte and supplying an oxygen-containing gas to a cathode provided on the other surface of said electrolyte, said method comprising the steps of: setting a substantially straight reference line showing a relationship between a potential difference and an electrical current, said potential difference being a potential difference between a reference electrode provided adjacent to said anode on said electrolyte and said anode; and judging that shortage of said fuel gas supplied to said anode occurs when said potential difference is detected as showing a relation line that has a portion the same as said straight reference line and a portion deviating from said straight reference line such that the deviating portion shows a larger potential difference than the straight reference line as the electrical current increases.