Abstract: The present invention provides an electrolyte solution including: a solvent composed primarily of a BF3-cyclic ether complex; and a supporting electrolyte. For example, preferred is an electrolyte solution in which the cyclic ether is one or two or more selected from optionally substituted tetrahydrofuran and optionally substituted tetrahydropyran.

Abstract: The invention provides a solvent for an electrolyte solution, an electrolyte solution, and a gel-like electrolyte superior in oxidation resistance and flame resistance. A solvent for an electrolyte solution comprising at least one boric ester represented by the following formula (I), and a boric ester represented by the following formula (II): B(ORf)3 (I); B(OCH2CH2CN)3 (II) wherein, in formula (I), each Rf independently represents CH2(CF2)nCF3 or CH(CF3)2, n is an integer from 0 to 6, and at least a part of each of —ORf and —OCH2CH2CN included in the boric esters is transesterified.

Abstract: A proton conductive material in which hollow inorganic fine particles that have through holes on a surface of the hollow inorganic fine particles, that are filled with an electrolyte resin. In addition, a membrane-electrode assembly which has an anode electrode provided on one surface side of a solid polymer electrolyte membrane and including an anode catalyst layer, and a cathode electrode provided on the other surface side of the solid polymer electrolyte membrane and including a cathode catalyst layer, wherein at least the anode catalyst layer from among the pair of catalyst layers includes the proton conductive material.

Abstract: The principal object of the present invention is to provide a liquid electrolyte for electrochemical device having a wide potential window. The invention solves the problem by providing a liquid electrolyte for electrochemical device, which comprises an electrolyte dissolved in an MFx complex being liquid at ordinary temperatures wherein “M” represents B, Si, P, As or Sb and “X” represents the valence of “M”.

Abstract: The principal object of the invention is to provide a lithium salt having excellent ion conductivity. The invention solves the problem by providing a lithium salt having a structure represented by the general formula (1): in which “M” represents B, Si, Ge, P, As or Sb; “X” represents the valence of “M”; “R1” represents —CmH2m— whereupon “m” is an integer of 1 to 4; “R2” represents —CkH2k+1 whereupon “k” is an integer of 1 to 8; and “n” represents 0 to 12.

Abstract: The invention provides a solvent for an electrolyte solution, an electrolyte solution, and a gel-like electrolyte superior in oxidation resistance and flame resistance. A solvent for an electrolyte solution comprising at least one boric ester represented by the following formula (I), and a boric ester represented by the following formula (II): B(ORf)3 (I); B(OCH2CH2CN)3 (II) wherein, in formula (I), each Rf independently represents CH2(CF2)nCF3 or CH(CF3)2, n is an integer from 0 to 6, and at least a part of each of —ORf and —OCH2CH2CN included in the boric esters is transesterified.

Abstract: The present invention provides an electrolyte solution including: a solvent composed primarily of a BF3-cyclic ether complex; and a supporting electrolyte. For example, preferred is an electrolyte solution in which the cyclic ether is one or two or more selected from optionally substituted tetrahydrofuran and optionally substituted tetrahydropyran.

Abstract: An electrolyte membrane for a fuel cell includes a fluorine polymer electrolyte having a sulfonic acid group, and a copolymer which includes at least an aromatic ring and a cyclic imide that is condensed or not condensed with the aromatic ring, and in which an aromatic repeating unit having a structure in which the aromatic ring and the cyclic imide are bonded together directly or by only a single atom, is linked with a siloxane repeating unit having a structure that includes a siloxane structure.

Abstract: The principal object of the present invention is to provide a liquid electrolyte for electrochemical device having a wide potential window. The invention solves the problem by providing a liquid electrolyte for electrochemical device, which comprises an electrolyte dissolved in an MFx complex being liquid at ordinary temperatures wherein “M” represents B, Si, P, As or Sb and “X” represents the valence of “M”.

Abstract: A proton conductive material n which hollow inorganic fine particles that have through holes on a surface of the hollow inorganic fine particles, that are filled with an electrolyte resin. In addition, a membrane-electrode assembly which has an anode electrode provided on one surface side of a solid polymer electrolyte membrane and including an anode catalyst layer, and a cathode electrode provided on the other surface side of the solid polymer electrolyte membrane and including a cathode catalyst layer, wherein at least the anode catalyst layer from among the pair of catalyst layers includes the proton conductive material.

Abstract: An electrolyte membrane for a fuel cell includes: a proton conductive material in which hollow inorganic fine particles having through-holes on the surface of the hollow inorganic fine particles, are filled with an electrolyte resin; and a non-proton conductive polymer.

Abstract: The present invention is to provide a polymer electrolyte material capable of causing interaction with a hydrocarbon polymer electrolyte and ensuring bonding ability between a polymer electrolyte membrane and a catalyst layer as well as having excellent gas permeability, and a membrane electrode assembly for fuel cell using the same. A polymer electrolyte material comprises at least a first repeating unit containing a Si—O bond which forms a main backbone and a second repeating unit containing an aromatic ring and a proton-conducting group, and a membrane electrode assembly for fuel cell comprises a polymer electrolyte membrane and/or a catalyst layer containing the polymer electrolyte material.

Abstract: The principal object of the invention is to provide a lithium salt having excellent ion conductivity. The invention solves the problem by providing a lithium salt having a structure represented by the general formula (1): in which “M” represents B, Si, Ge, P, As or Sb; “X” represents the valence of “M”; “R1” represents —CmH2m— whereupon “m” is an integer of 1 to 4; “R2” represents —CkH2k+1 whereupon “k” is an integer of 1 to 8; and “n” represents 0 to 12.

Abstract: An electrolyte membrane for a fuel cell includes: a proton conductive material in which hollow inorganic fine particles having through-holes on the surface of the hollow inorganic fine particles, are filled with an electrolyte resin; and a non-proton conductive polymer.

Abstract: Disclosed are a lithium salt expressed by a formula, LiAlXn(OY)4-n, where “X” is an electrophilic substituent group and “Y” is an oligoether group, an ionic conductor with the lithium salt dispersed in a structural member, and a liquid electrolyte with the lithium salt dissolved in a solvent. For example, the ionic conductor exhibits high ionic conductivity as well as high lithium ion transport number.

Abstract: A polymer electrolyte includes a substrate polymer, a branched polymer, and a lithium salt. The branched polymer has a main chain whose repeating unit is composed of an oligoethylene oxide chain and a connector molecule bonded to the oligoethylene oxide chain. The branched polymer can be a hyperbranched polymer. The polymer electrolyte can further include a composite oxide and/or a boroxine compound. The polymer electrolyte is good in terms of the ionic conductivity, and exhibits a high ionic conductivity especially at low temperatures. When the polymer electrolyte is used to make polymer lithium batteries, the resulting polymer lithium batteries shows improved charge-discharge cycle characteristics. In particular, it is possible to operate the polymer lithium batteries at low temperatures.

Abstract: A nonaqueous electrolyte secondary battery includes positive and negative electrodes, a separator, a nonaqueous electrolyte provided by dissolving a lithium salt in a nonaqueous solvent. The nonaqueous electrolyte contains a compound as shown in the chemical formula below and has a boroxin ring and polyalkylene oxide chains: R1═R1′—(O-Alk1)n1— R2═R2′—(O-Alk2)n2— R3═R3′—(O-Alk3)n3— where AlK1, AlK2, AlK3 are identical with or different from one another, each of AlK1, AlK2, AlK3 representing one type of alkylene having a carbon number of 2 or 3, and R′1, R′2, R′3 are identical with or different from one another, each of R′1, R′2, R′3 representing one type of alkyl having a carbon number of 1 or 2.

Abstract: Disclosed are a lithium salt expressed by a formula, LiAlXn(OY)4-n, where “X” is an electrophilic substituent group and “Y” is an oligoether group, an ionic conductor with the lithium salt dispersed in a structural member, and a liquid electrolyte with the lithium salt dissolved in a solvent. For example, the ionic conductor exhibits high ionic conductivity as well as high lithium ion transport number.

Abstract: An ionic conductor according to the present invention includes an electrolyte salt for ionic conduction, an ionically conducting molecule including a molecular chain which provides an ion conducting pathway and a boroxine ring bonded to the molecular chain and trapping anions resulting from the electrolyte salt, and a structural member for dispersion and immobilization of the ionically conducting molecule and the electrolyte salt therein. The structural material gives the ionic conductor mechanical strength, the ionically conducting molecule provides an ion conducting pathway, and the electrolyte salt gives it ionic conductivity.

Abstract: A nonaqueous electrolyte secondary battery includes positive and negative electrodes, a separator, a nonaqueous electrolyte provided by dissolving a lithium salt in a nonaqueous solvent.