SECONDARY BATTERY OF IMPROVED STABILITY

摘要

PURPOSE: A secondary battery is provided to greatly enhance high temperature safety of the battery by having a carbon dioxide absorbent material to absorb carbon dioxide which causes of ignition and explosion of the battery at a high temperature to separate the carbon dioxide from an inside battery environment. CONSTITUTION: A secondary battery which has electrode assembly of anode/separation film/cathode which is built in a battery case and comprises an absorbent material which absorbs carbon dioxide generated from charging and discharging process of the battery in a solid phase for a liquid phase included in a granular material in the battery case in more than one part selected among electrode, separation film, electrolyte, and inner surface of battery case. The absorbent material is a structure included in an adhered state to supporting element or a structure built in a capsule.