High pressure operation of molten carbonate fuel cells with improved CO utilization

A molten carbonate fuel cell (MCFC) is operated at high voltage at a cathode input stream having a low CO2 content to provide increased operating voltage and/or increased CO2 utilization. It has been found that increasing the operating pressure of a molten carbonate fuel cell when using a low CO2 content cathode input stream may provide an unexpected substantial increase in operating voltage while also reducing or minimizing the amount of alternative ion transport and/or increasing CO2 utilization. 在高压下以具有低CO2含量的阴极输入料流操作熔融碳酸盐燃料电池(MCFC)，以提供增加的操作电压和/或提高的CO2利用率。已经发现，当使用低CO2含量阴极输入料流时增加熔融碳酸盐燃料电池的操作压力可以提供操作电压的出乎意料地大幅增加，同时还减少或最小化替代离子传输的量和/或提高CO2利用率。