NONAQUEOUS ELECTROLYTE RECHARGEABLE BATTERY

  • US 20140087248A1
  • Filed: 09/25/2013
  • Published: 03/27/2014
  • Est. Priority Date: 09/26/2012
  • Status: Abandoned Application
First Claim
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1. A nonaqueous electrolyte rechargeable battery comprising:

  • a positive electrode and a negative electrode occluding and discharging lithium ions; and

    a nonaqueous electrolyte, whereinthe nonaqueous electrolyte contains a film forming agent,the film forming agent includes at least two kinds of compounds, and forms at least two films in layers at least at a part of a surface of the negative electrode in accordance with charging and discharging of the nonaqueous electrolyte rechargeable battery,the at least two kinds of compounds of the film forming agent include at least one kind of lithium salt having an oxalate complex,among the at least two films, an innermost film is an oxalate complex-derived film that is derived from the oxalate complex and has a thickness equal to or greater than a film formed on an outer side of the innermost film, andthe at least two kinds of compounds of the film forming agent include a compound having a LUMO level higher than that of the at least one kind of lithium salt incorporated in the oxalate complex-derived film as a high LUMO film forming agent.

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