GAS SUPPRESSION DEVICE AND METHOD FOR LITHIUM-SULFUR BATTERY

A gas suppression device for a lithium-sulfur battery includes a voltage measurement unit to measure a voltage of the lithium-sulfur battery; a current application unit to apply an electric current; and a control unit configured to control the current application unit to maintain the voltage of the lithium-sulfur battery within a predetermined range based on a voltage measurement result of the voltage measurement unit, to suppress gas generation in the lithium-sulfur battery having gone through an activation step.