And Acyclic Oxygen Or Nitrogen Containing Solvent Compound Patents (Class 429/334)
The acyclic oxygen containing solvent compound is an acyclic ether (Class 429/335)
  • Method for preparing nonaqueous electrolytes for alkali ion electrochemical cells containing unsymmetric organic carbonates
    Patent number: 6057062
    Abstract: The present invention relates to an improved method for synthesizing unsymmetric linear organic carbonates comprising the reaction of two symmetric dialkyl carbonates, R.sup.1 and R.sup.2, in the presence of a nucleophilic reagent or an election donating reductant as a catalyst, wherein R.sup.1 and R.sup.2 can be either saturated or unsaturated alkyl or aryl groups, is described. The presence invention further provides a preparation method for a nonaqueous organic electrolyte having an unsymmetric linear organic carbonate as a co-solvent.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: May 2, 2000
    Assignee: Wilson Greatbatch Ltd.
    Inventors: Hong Gan, Marcus J. Palazzo, Esther S. Takeuchi
  • Solvent for electrolytic solutions
    Patent number: 6045950
    Abstract: Electrolytic solutions containing a malonate ester having no alpha-carbon hydrogen atoms are disclosed. The electrolytic solutions can be used in lithium ion batteries.
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: April 4, 2000
    Assignee: Duracell Inc.
    Inventor: Hao Chang
  • Organic sulfate additives for nonaqueous electrolyte in alkali metal electrochemical cells
    Patent number: 6013394
    Abstract: An alkali metal, solid cathode, nonaqueous electrochemical cell capable of delivering high current pulses, rapidly recovering its open circuit voltage and having high current capacity, is described. The stated benefits are realized by the addition of at least one organic sulfate additive to an electrolyte comprising an alkali metal salt dissolved in a mixture of a low viscosity solvent and a high permittivity solvent. A preferred solvent mixture includes propylene carbonate, dimethoxyethane and a dialkyl sulfate additive.
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: January 11, 2000
    Assignee: Wilson Greatbatch Ltd.
    Inventors: Hong Gan, Esther S. Takuchi