COMPOSITION CONTAINING HYDROQUINONE OR QUINOLINE FOR FUEL CELL COOLANT

摘要

The present invention relates to a composition for cooling a fuel cell, comprising: (a) glycol; (b) deionized water; and (c) hydroquinone or quinoline. In the composition according to the present invention, in a compound containing hydroquinone or quinoline, the amount of acid generated after oxidation of glycol is no more than 550 ppm. Also, the composition, according to the present invention, has a superior effect of maintaining a change rate of electric conductivity (initial conductivity rate - conductivity rate after oxidation/initial conductivity rate) with respect to a graphite-based separation plate and an aluminum-based testing piece at 25 or more times lower, by preventing oxidation of glycol thereby inhibiting generation of ionic substances. As a result, the composition for a coolant for the fuel cell, according to the present invention, does not freeze in the winter but still maintains a low conductivity rate, thereby allowing for use in cooling water for a cooling system in a fuel cell actuation apparatus.