摘要:
An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.
摘要:
An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.
摘要:
The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.
摘要:
The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.
摘要:
The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.
摘要:
Lithium-ion electrochemical cells are provided that include a positive electrode that includes a lithium metal oxide or a lithium metal phosphate, a negative electrode capable of intercalating or alloying with lithium, and an electrolyte that includes an additive. The additive includes a multifunctional anion that has the formula, X—SO2—Rf′—SO2—Y, wherein X and Y are, independently, either O— or RfSO2N—, Rf is a straight or branched fluoroalkyl moiety having from 1 to 6 carbon atoms, and can, optionally, contain one or more in-chain heteroatoms, wherein Rf′ is a straight or branched chain or cyclic fluoroalkylene having from 1 to 10 carbon atoms and can, optionally, contain one or more in-chain heteroatoms, and wherein both Rf and Rf′ have a maximum of 20% non-fluorine substituents. The provided additives can improve the performance, hydrolytic stability, and thermal stability of the provided electrochemical cells.
摘要:
Lithium-ion electrochemical cells are provided that include a positive electrode that includes a lithium metal oxide or a lithium metal phosphate, a negative electrode capable of intercalating or alloying with lithium, and an electrolyte that includes an additive. The additive includes a multifunctional anion that has the formula, X—SO2—Rf—SO2—Y, wherein X and Y are, independently, either O— or RfSO2N—, Rf is a straight or branched fluoroalkyl moiety having from 1 to 6 carbon atoms, and can, optionally, contain one or more in-chain heteroatoms, wherein Rf is a straight or branched chain or cyclic fluoroalkylene having from 1 to 10 carbon atoms and can, optionally, contain one or more in-chain heteroatoms, and wherein both Rf and Rf have a maximum of 20% non-fluorine substituents. The provided additives can improve the performance, hydrolytic stability, and thermal stability of the provided electrochemical cells.
摘要:
An antistatic composition comprising (a) at least one polymeric salt consisting of (i) at least one polyoxyalkylene ammonium cation, and (ii) a fluorinated anion. The composition exhibits good antistatic characteristics.
摘要:
A nonflammable electrolyte composition comprises: a homogenous solvent mixture and a lithium salt dissolved therein. The homogenous solvent mixture comprises a cyclic carbonate and a highly fluorinated compound selected from the group consisting of highly fluorinated acyclic carbonates, CF3CFHCF2OCH3, and combinations thereof. If the electrolyte composition has flammable constituents, they are present in a combined amount of less than 5 percent by weight. Lithium-containing electrochemical cells that include the electrolyte composition, and battery packs and devices including the same are also disclosed.
摘要翻译:不燃性电解质组合物包括:溶解在其中的均匀溶剂混合物和锂盐。 均相溶剂混合物包含环状碳酸酯和选自高度氟化的无环碳酸酯,CF 3 CFHCF 2 OCH 3及其组合的高氟化合物。 如果电解质组合物具有易燃成分,则它们的组合量小于5重量%。 还公开了包括电解质组合物的含锂电化学电池,以及包括其的电池组和装置。
摘要:
Electrolyte compositions and electrochemical systems containing such compositions are described where the electrolyte includes in a matrix material a combination of a conductive salt and a bis(perfluoroalkanesulfonyl)imide surfactant salt. The compositions improve wettability of electrodes and separators while maintaining and improving conductivity, stability, and compatibility with other cell components.