SECONDARY BATTERY TYPE FUEL CELL SYSTEM

摘要

A secondary battery type fuel cell system comprises: a hydrogen generating agent that generates hydrogen by an oxidation reaction with water and that is capable of regeneration by a reduction reaction with hydrogen; a generator/electrolysis section having a generating function that generates electricity by using as fuel hydrogen that is supplied from the hydrogen generating agent and an electrolytic function that performs electrolysis of water vapour for generating hydrogen that is supplied to the hydrogen generating agent; and a control section, wherein mixed gas containing hydrogen and water vapour is circulated between the hydrogen generating agent and the generator/electrolysis section. The control section performs temperature control of the generator/electrolysis section or control of the water vapour partial pressure ratio of the mixed gas, so that the water vapour partial pressure of the mixed gas is lower than the saturation water vapour partial pressure, after stopping of operation of at least either power generation operation or charging operation.