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Title: Corrosion protection for a fuel cell coolant system

Abstract

Described is a fuel cell stack having a positive end and a negative end and comprising a plurality of cells connected electrically in series, said stack including components defining coolant channels for carrying a coolant fluid into heat exchange relationship with said cells and a coolant manifold passage extending from the positive to the negative end of the said stack for distributing a coolant fluid to said channels, said components comprising an oxidizable material and being in electrical communication with said fuel cells and connecting them in series electrically; and an ionically conductive coolant fluid within said manifold passage providing a path for shunt current from the positive to the negative end of said stack, said fluid including a gas mixed therein which oxidizes at the positive end of said stack at an electrochemical potential below which said material of said components at the positive end of said stack are oxidized for the level of shunt current through said fluid.

Inventors:
;
Publication Date:
OSTI Identifier:
7290615
Patent Number(s):
US 3940285
Assignee:
United Technologies Corp.
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; FUEL CELLS; COOLING SYSTEMS; CORROSION PROTECTION; DIRECT ENERGY CONVERTERS; ELECTROCHEMICAL CELLS; 300503* - Fuel Cells- Materials, Components, & Auxiliaries

Citation Formats

Nickols, Jr, R C, and Trocciola, J C. Corrosion protection for a fuel cell coolant system. United States: N. p., 1974. Web.
Nickols, Jr, R C, & Trocciola, J C. Corrosion protection for a fuel cell coolant system. United States.
Nickols, Jr, R C, and Trocciola, J C. Fri . "Corrosion protection for a fuel cell coolant system". United States.
@article{osti_7290615,
title = {Corrosion protection for a fuel cell coolant system},
author = {Nickols, Jr, R C and Trocciola, J C},
abstractNote = {Described is a fuel cell stack having a positive end and a negative end and comprising a plurality of cells connected electrically in series, said stack including components defining coolant channels for carrying a coolant fluid into heat exchange relationship with said cells and a coolant manifold passage extending from the positive to the negative end of the said stack for distributing a coolant fluid to said channels, said components comprising an oxidizable material and being in electrical communication with said fuel cells and connecting them in series electrically; and an ionically conductive coolant fluid within said manifold passage providing a path for shunt current from the positive to the negative end of said stack, said fluid including a gas mixed therein which oxidizes at the positive end of said stack at an electrochemical potential below which said material of said components at the positive end of said stack are oxidized for the level of shunt current through said fluid.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1974},
month = {12}
}