Toyota Jidosha Kabushiki Kaisha

Kyoto University

Kyushu University

Panasonic Corporation

Mitsui Engineering and Shipbuilding Company Limited

Kanto Denka Kogyo Co., Ltd.

Honda Motor Co., Ltd.

Sumitomo Chemical Company, Limited

Mitsubishi Heavy Industries Limited

Japan As Represented by President of the University of Kyusyu

Japan As Represented by the President of the University of Kyusyu

Jun-ichi Yamaki

Zempachi Ogumi

Shigeto Okada

Hirofumi Nakamoto

Toshiro Hirai

Toru Matsui

Motoshi Isono

Osamu Omae

Naoki Hatta

Kumiko Sueto

Tomoko Iwanaga

Tomoyuki Shiratsuchi

Shinji Iizuka

Takeshi Shimada

Kenji Nakane

Tetsuya Waseda

Hideyuki Yamamura

Yukinori Koyama

Koji Suto

Akiyoshi Nakata

Shigeru Fujino

Toshikazu Inaba

Toshiyasu Kiyabu

Izumi Uchiyama

Irina D Gocheva

Yusuke Takahashi

Hideyuki Horino

Manabu Nishijima

Ken-ichi Okazaki

Takayuki Doi

Yike Chen

Takafumi Yamamoto

A method for manufacturing a fluoride ion conducting electrolyte solution which can improve ionic conductivity includes a step of heating a fluoride and/or a solvent when the fluoride and the solvent are mixed, wherein a heating temperature at the step is lower than a temperature at which the solvent decomposes.

Method for manufacturing fluoride ion conducting electrolyte solution and method for manufacturing fluoride ion battery

The present application provides an electrochemical energy storage device with a desirable reaction reversibility by using a metal halide as an electrode active material. The electrochemical energy storage device disclosed herein includes: a positive electrode; a negative electrode; and a non-aqueous electrolyte in contact with the positive electrode and the negative electrode, wherein: at least one of the positive electrode and the negative electrode contains a metal halide as an electrode active material; and the non-aqueous electrolyte contains, as a solvent, an ionic liquid of which a component is a cation having an alkoxyalkyl group.

Electrochemical energy storage device

The problem to be solved is to provide a liquid electrolyte for a fluoride ion battery which allows a larger capacity of the battery. Solving the problem by providing a liquid electrolyte for a fluoride ion battery including a fluoride salt and a solvent to dissolve the fluoride salt, characterized in that the solvent is an aromatic material having an aromatic cation and an anion, and a molar ratio of the aromatic cation to a fluoride ion is more than 1.

Liquid electrolyte for fluoride ion battery and fluoride ion battery

A problem of the present invention is to provide a liquid electrolyte for a fluoride ion battery, in which fluoride anion conductivity is imparted to an ionic liquid containing fluoride complex anions. The present invention solves the problem by providing a liquid electrolyte for a fluoride ion battery, which comprises an ionic liquid containing specific fluoride complex anions and an anion acceptor having a specific acceptor number.

A secondary battery in which the difference between the voltage at the time of discharging and the voltage at the time of charging is small, ensuring good energy efficiency, and the charge/discharge life is long. Therefore, in order to attain the above-described object, a secondary battery containing a positive electrode, a negative electrode, and an electrolytic solution, wherein at least one of the positive electrode and the negative electrode contains, as the active material, at least one selected from the group consisting of a metal ion-containing fluoride, a metal oxide, a metal sulfide, a metal nitride, and a metal phosphide; the electrolytic solution contains an anion receptor; and the anion receptor forms a salt or a complex with an anion contained in the active material, thereby enabling the active material to dissolve in the electrolytic solution.

Secondary battery

An electrolytic solution for a fluoride ion battery includes: a fluoride salt; and a solvent for dissolving the fluoride salt, in which the solvent is an ether-containing material having a cation and an anion, and in the cation, an ether group represented by &#x2014;CH&#x2014;O&#x2014;R (where R represents an alkyl group or a fluoroalkyl group) binds to a cation central element which is N or P.

Electrolytic solution for fluoride ion battery and fluoride ion battery

An electrochemical energy storing device disclosed herein includes a positive electrode containing a positive-electrode active material, a negative electrode, and a nonaqueous electrolyte solution which is in contact with the positive electrode and the negative electrode. The positive-electrode active material in a discharged state contains at least one selected from the group consisting of an alkali metal chloride, an alkaline-earth metal chloride, and a quaternary alkylammonium chloride. The nonaqueous electrolyte solution contains, as a solvent, an ionic liquid including cations having an alkoxyalkyl group as a component.

Electrochemical energy storing device

An exemplary electrochemical energy storage device includes: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; and a non-aqueous electrolytic solution. The non-aqueous electrolytic solution includes an electrolyte salt represented by Li(XSONSOY) (where X and Y are any of F, CFand (CF), and (CF)forms a cyclic imide anion), an organic solvent which is capable of dissolving the electrolyte salt, and a polyethylene glycol of which both terminals are not OH. The positive electrode active material includes a chloride of Cu, Bi or Ag, and the negative electrode active material includes lithium.

An exemplary electrochemical energy storage device includes: a positive electrode including a positive electrode active material; a negative electrode including a negative electrode active material; and a non-aqueous electrolytic solution including LiCl, at least one of Li(XSONSOY) (where X and Y are any of F, CFand (CF), and (CF)forms a cyclic imide anion) and LiBF, and at least one of tetrahydrofuran and a polyethylene glycol of which both terminals are alkyl groups, the non-aqueous electrolytic solution being in contact with the positive electrode and the negative electrode, wherein the positive electrode active material includes a chloride of Cu, Bi or Ag, or the negative electrode active material includes magnesium chloride.

An electrolytic solution for a fluoride ion battery includes: a fluoride salt; and an alcohol material that has one OH group, and in which a molar ratio of the alcohol material is more than 1 with respect to fluoride ions of the fluoride salt.

A lithium secondary battery includes: a positive electrode that contains a positive electrode active material; a negative electrode; and a nonaqueous electrolyte. The positive electrode active material is amorphous and is expressed by LiA[PM]Owhere, in the formula, A is Mn or Ni; M is a glass former element having an electronegativity lower than P; and x, y, a and z respectively satisfy 1&#x3c;x&#x2266;2.5, 0&#x3c;y&#x2266;3, 0&#x2266;a&#x3c;1 and z=(x+(valence of A)+(valence of P)&#xd7;a&#xd7;y+(valence of M)&#xd7;(1&#x2212;a)&#xd7;y)/2.

Lithium secondary battery

The present invention provides a positive electrode active material that has rate characteristics suitable for nonaqueous electrolyte batteries and particularly nonaqueous electrolyte secondary batteries, a method by which this positive electrode active material can be easily mass produced, and a high-performance nonaqueous electrolyte battery that has a positive electrode active material obtained by this method. The present invention relates to a method of producing a positive electrode active material, the method comprising a step of mixing a carbon source with lithium manganese phosphate LiMnPOor a compound LiMnMPO(where, 0&#x2266;x&#x3c;1 and M is at least one metal element selected from the group consisting of Co, Ni, Fe, Zn, Cu, Ti, Sn, Zr, V, and Al) containing lithium manganese phosphate LiMnPOas a solid solution composition, and heat treating the obtained mixture under an inert gas atmosphere.

Method of producing positive electrode active material and nonaqueous electrolyte battery using the same

Disclosed is a positive electrode active material for nonaqueous electrolyte secondary batteries which contains a complex oxide mainly containing sodium, nickel and a tetravalent metal while having a hexagonal structure. This positive electrode active material enables to obtain a nonaqueous electrolyte secondary battery with high operating voltage. The complex oxide is preferably expressed as Na[NaNiMA]O(wherein M represents one or more tetravalent metals, A represents one or more trivalent metals, 0&#x3c;x&#x2266;0.5, 0&#x2266;y&#x3c;1/6, and x&#x3e;y).

Positive electrode active material for nonaqueous electrolyte secondary battery

Electrode active material that is used together with an electrolyte solution having an electrolyte decomposition potential Ve is represented by the general expression LixFeMyO2 and is amorphous. In the expression, x and y are values which independently satisfy 1&#x3c;x&#x2266;2.5 and O&#x3c;y&#x2266;3, respectively, and z=(x+(valence of Fe)+(valence of M)&#xd7;y)/2 to satisfy stoichiometry, and M represents one or two or more types of glass former element. The average electronegativity of M is less than (Ve+6.74/5.41.

Amorphous electrode active material and lithium secondary battery

In a non-aqueous electrolyte secondary battery, in order to adjust a cathode active material in which guest cation such as Na and Li is included, alkaline metal fluoride which is expressed by a general formula AF and transition metal fluoride which is expressed by a formula M' Fare subjected to a mechanical milling process to produce metal fluoride compound AM&#x2032; F. The mechanical milling process desirably uses a planetary ball mill.

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Kyoto, Japan

Jun-ichi Yamaki