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LITHIUM SECONDARY BATTERY

  • US 20150207183A1
  • Filed: 01/21/2015
  • Published: 07/23/2015
  • Est. Priority Date: 01/23/2014
  • Status: Abandoned Application
First Claim
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1. A lithium secondary battery comprising a battery case housing an electrode assembly having a positive electrode and a negative electrode, and also housing a nonaqueous electrolyte solution including a supporting salt, whereinthe nonaqueous electrolyte solution contains, in addition to the supporting salt, at least 2 wt % of a gas-forming agent that decomposes to form a gas when the battery reaches an overcharged state, and, as a surfactant, at least 1 wt % of a polyethylene glycol fatty acid ester, andthe battery case is equipped with a current interrupt device that is actuated by a rise in pressure within the battery case.

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