Electrochemical cell exhaust management system

A solid oxide fuel cell stack comprising:

• a plurality of cells, at least some of which include:
• a Cr-getter material in an exhaust gas stream pathway;
• and
• a temperature management system including a controller programmed to, in response to exhaust gas stream temperature input, activate at least one component, located in an exhaust gas stream pathway and configured to reduce temperature of the exhaust gas stream to a temperature within a threshold range corresponding to a temperature range promoting condensation of Cr-containing gas into solid, liquid, or aqueous Cr2O3 and H2CrO4.

A high temperature electrochemical cell cathode side comprising:

• a flow field including a gas exhaust stream pathway;
• a heat exchanger;
• and
• a controller programmed to activate the heat exchanger which is configured to reduce a temperature of the gas exhaust stream pathway to a temperature within a predetermined temperature range promoting condensation of Cr-containing gas into solid, liquid, or aqueous Cr2O3 and H2CrO4 in response to the gas exhaust stream pathway temperature exceeding a threshold, and to recover waste heat by heating a medium.