Method of operating a fuel cell

Details Method of operating a fuel cell Method of operating a fuel cell

H - Electricity

01

M

H01M 8/18 (2006.01)

Patent

CA 2404346

A method of operating a regenerative fuel cell which comprises two half-cells separated by a cation-exchange membrane, there being a halogen/halide electrolyte in one half of the cell, a sulfide/polysulfide in the other half of the cell and cations in both halves of the cell which act as charge carriers therebetween, wherein the state of charge of the sulfide/polysulfide electrolyte is in the range of from 1.8 to 2.5 for at least a part of the charge/discharge cycle over a plurality of cycles.

L'invention concerne un procédé de fonctionnement d'une pile à combustible à récupération formée de deux demi-piles séparées par une membrane d'échange cationique. Une demi-pile contient un électrolyte halogène/halogénure, l'autre demi-pile un sulfure/polysulfure, toutes deux renfermant des cations qui agissent comme porteurs de charge entre elles. L'état de charge de l'électrolyte sulfure/polysulfure se situe entre 1,8 et 2,5 pour au moins une partie du cycle charge/décharge pendant plusieurs cycles.

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