Resistance-stabilizing additives for electrolyte

Abstract

A resistance-stabilizing additive to an electrolyte for a battery cell in an implantable medical device is presented. At least one resistance-stabilizing additive is selected from a group comprising an electron withdrawing group, an aromatic diacid salt, an inorganic salt, an aliphatic organic acid, an aromatic diacid, and an aromatic monoacid.

1 . A resistance-stabilizing additive for an electrolyte of a battery cell in an implantable medical device (IMD) comprising:
 at least one chemical compound selected from a chemical class consisting of an electron withdrawing group, an aromatic diacid salt, an inorganic salt, an aliphatic organic acid, an aromatic diacid, and an aromatic monoacid.   
     
     
         2 . The additive of  claim 1  wherein the electron-withdrawing group selected from one of trifluoromethylvinyl acetate and 2,2,2-trifluoroacetamide. 
     
     
         3 . The additive of  claim 1 , wherein aromatic monoacid comprises benzoic acid. 
     
     
         4 . The additive of  claim 1 , wherein the benzoic acid includes fluorinated benzoic acid. 
     
     
         5 . The additive of  claim 1 , wherein the benzoic acid being one of 3-hydroxy benzoic acid and 2-4 hydroxy benzoic acid. 
     
     
         6 . The additive of  claim 1 , wherein the organic acid selected from a group comprising carboxylic acid, benzoic acid, and hexafluoroglutaric acid. 
     
     
         7 . An additive to an electrolyte for use in a battery cell in an IMD, the additive comprising:
 an electron-withdrawing group.   
     
     
         8 . The additive of  claim 6  wherein the electron-withdrawing group selected from one of trifluoromethylvinyl acetate and 2,2,2-trifluoroacetamide. 
     
     
         9 . An additive to an electrolyte for use in a battery cell in an IMD, the additive being at least one of tetramethyl ammonium (TMA) hydrogen phthalate, tetrabutyl-ammonium (TBA) hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoltrifluoroactone, and benzoic acid. 
     
     
         10 . An additive composition for an electrolyte in a battery cell for an IMD comprising:
 a first resistance-stabilizing additive; and   a second resistance-stabilizing additive combined with the first resistance-stabilizing additive.   
     
     
         11 . The additive composition of  claim 10 , the first resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoltrifluoroactone, and benzoic acid. 
     
     
         12 . The additive composition of  claim 10 , the second resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoltrifluoroactone, and benzoic acid. 
     
     
         13 . The additive composition of  claim 10 , further comprising:
 a third resistance-stabilizing additive, the third resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoltrifluoroactone, and benzoic acid.   
     
     
         14 . A method for forming an additive composition for an electrolyte in a battery cell for an IMD, the method comprising:
 selecting a first resistance-stabilizing additive; and   combining a second resistance-stabilizing additive with the first resistance-stabilizing additive to form a resistance-stabilizing composition.   
     
     
         15 . The method of  claim 14 , further comprising:
 combining the resistance-stabilizing composition with a base electrolyte composition for the battery cell.   
     
     
         16 . The method of  claim 14 , the first resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoltrifluoroactone, and benzoic acid. 
     
     
         17 . The method of  claim 14 , the second resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoltrifluoroactone, and benzoic acid. 
     
     
         18 . An electrolyte comprising a base liquid electrolyte composition and a resistance-stabilizing additive distinct from the base liquid electrolyte composition, wherein the resistance-stabilizing additive comprises at least one chemical compound selected from a chemical class consisting of a compound comprising an electron withdrawing group, an aromatic diacid salt, an inorganic salt, an aliphatic organic acid, an aromatic diacid, and an aromatic monoacid. 
     
     
         19 . The electrolyte of  claim 18 , wherein the resistance-stabilizing additive comprises a compound comprising an electron-withdrawing group that is selected from one of trifluoromethylvinyl acetate and 2,2,2-trifluoroacetamide. 
     
     
         20 . The electrolyte of  claim 18 , wherein the resistance-stabilizing additive comprises an aromatic monoacid that comprises a benzoic acid. 
     
     
         21 . The electrolyte of  claim 20 , wherein the benzoic acid includes fluorinated benzoic acid. 
     
     
         22 . The electrolyte of  claim 20 , wherein the benzoic acid is selected from one of 3-hydroxy benzoic acid and 2-4 hydroxy benzoic acid. 
     
     
         23 . The electrolyte of  claim 18 , wherein the resistance-stabilizing additive comprises an organic acid that is selected from a group comprising carboxylic acid, benzoic acid, and hexafluoroglutaric acid. 
     
     
         24 . An electrolyte comprising a base liquid electrolyte composition and a resistance-stabilizing additive distinct from the base liquid electrolyte composition, wherein the resistance-stabilizing additive comprises a compound having an electron-withdrawing group. 
     
     
         25 . The electrolyte of  claim 24 , wherein the compound having an electron-withdrawing group comprises 2,2,2-trifluoroacetamide. 
     
     
         26 . An electrolyte comprising a base liquid electrolyte composition and a resistance-stabilizing additive distinct from the base liquid electrolyte composition, wherein the resistance-stabilizing additive comprises at least one of tetramethyl ammonium (TMA) hydrogen phthalate, tetrabutyl-ammonium (TBA) hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoyltrifluoroacetone, and benzoic acid. 
     
     
         27 . An electrolyte comprising:
 a base liquid electrolyte composition;   a first resistance-stabilizing additive; and   a second resistance-stabilizing additive combined with the first resistance-stabilizing additive;   wherein the first and second resistance-stabilizing additives are distinct from the base liquid electrolyte composition.   
     
     
         28 . The electrolyte of  claim 27 , the first resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoyltrifluoroacetone, and benzoic acid. 
     
     
         29 . The electrolyte of  claim 27 , the second resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoyltrifluoroacetone, and benzoic acid. 
     
     
         30 . The electrolyte of  claim 27 , further comprising:
 a third resistance-stabilizing additive, the third resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoyltrifluoroacetone, and benzoic acid.   
     
     
         31 . A method for forming an electrolyte in a battery cell for an implantable medical device, the method comprising:
 selecting a first resistance-stabilizing additive;   combining a second resistance-stabilizing additive with the first resistance-stabilizing additive to form a resistance-stabilizing composition; and   combining the resistance-stabilizing composition with a base electrolyte composition for the battery cell.   
     
     
         32 . The method of  claim 31 , the first resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoyltrifluoroacetone, and benzoic acid. 
     
     
         33 . The method of  claim 31 , the second resistance-stabilizing additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoyltrifluoroacetone, and benzoic acid. 
     
     
         34 . A battery comprising an electrode assembly and an electrolyte, wherein the electrolyte comprises a liquid electrolyte and a resistance-stabilizing additive distinct from the liquid electrolyte, wherein the resistance-stabilizing additive comprises at least one chemical compound selected from a compound comprising an electron withdrawing group, an aromatic diacid salt, an inorganic salt, an aliphatic organic acid, an aromatic diacid, an aromatic monoacid, and combinations thereof. 
     
     
         35 . The battery of  claim 34 , wherein the resistance-stabilizing additive comprises compound comprising an electron-withdrawing group. 
     
     
         36 . An implantable medical device comprising the battery of  claim 34 . 
     
     
         37 . A battery comprising an electrode assembly and an electrolyte, wherein the electrolyte comprises a liquid electrolyte and a resistance-stabilizing additive distinct from the liquid electrolyte, the additive being at least one of TMA hydrogen phthalate, TBA hydrogen sulfate, phosphonoacetic acid, 2,2,2-trifluoroacetamide, trifluoromethyl vinyl acetate, phthalic acid, benzoylacetone, benzoyltrifluoroacetone, and benzoic acid. 
     
     
         38 . An implantable medical device comprising the battery of  claim 37 . 
     
     
         39 . A battery comprising an electrode assembly and an electrolyte, wherein the electrolyte comprises a liquid electrolyte and a resistance-stabilizing additive composition distinct from the liquid electrolyte, the additive composition comprising:
 a first resistance-stabilizing additive; and   a second resistance-stabilizing additive combined with the first resistance-stabilizing additive.   
     
     
         40 . An implantable medical device comprising the battery of  claim 39 .