Toyota Jidosha Kabushiki Kaisha

Tohoku University

Takeshi Tojigamori

Hideki Oki

Hiroshi Nishiyama

Norihiro Ose

Hajime Hasegawa

Takashi Nakamura

Mitsutoshi Otaki

Hideki Nakayama

Kengo Haga

Keisuke Omori

Hideki Iba

Kazuto Ide

Keita Sekizawa

Koji Amezawa

Yuta Kimura

Yosuke Matsukawa

A main object of the present disclosure is to provide an active material of which capacity properties are excellent. The present disclosure achieves the object by providing an active material to be used for a fluoride ion battery, the active material comprising: a composition represented by MNin which Mis at least one kind of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, and x satisfies 0.05≤x≤3; or a composition represented by MLnNin which Mis at least one kind of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, Ln is at least one kind of Sc, Y, and lanthanoid, y satisfies 0.1≤y≤3, and z satisfies 0.15≤z≤6.

Active material and fluoride ion battery

A main object of the present disclosure is to provide an active material of which capacity properties are excellent. The present disclosure achieves the object by providing an active material to be used for a fluoride ion battery, the active material comprising: a composition represented by MNin which Mis at least one kind of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, and x satisfies 0.05&#x2264;x&#x2264;3; or a composition represented by MLnNin which Mis at least one kind of Cu, Ti, V, Cr, Fe, Mn, Co, Ni, Zn, Nb, In, Sn, Ta, W, and Bi, Ln is at least one kind of Sc, Y, and lanthanoid, y satisfies 0.1&#x2264;y&#x2264;3, and z satisfies 0.15&#x2264;z&#x2264;6.

Active material, and fluoride ion battery

A main object of the present disclosure is to provide a cathode active material with excellent capacity properties. In order to achieve the object, the present disclosure provides a cathode active material to be used in a fluoride ion battery wherein the cathode active material mainly contains a metal element M and a metal element M'; the metal element M is at least one kind of Cu, Fe and Mn; and the metal element M&#x2032; is at least one kind of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho and Yb.

Cathode active material and fluoride ion battery

Decomposition of an aqueous electrolyte solution when an aqueous lithium ion secondary battery is charged and discharged is suppressed, and the operating voltage of the battery is improved. The aqueous lithium ion secondary battery includes an anode, a cathode, and an aqueous electrolyte solution, the anode including a composite of an anode active material and polytetrafluoroethylene, wherein peaks of the polytetrafluoroethylene at around 1150 cmand at around 1210 cmare observed in FT-IR measurement of the composite, but a peak of the polytetrafluoroethylene at around 729 cmis not observed in Raman spectroscopy measurement of the composite.

Aqueous lithium ion secondary battery, method for producing anode active material composite, and method for producing aqueous lithium ion secondary battery

A main object of the present disclosure is to provide an all-solid-state battery with an excellent capacity durability. The present disclosure achieve the object by providing an all-solid-state battery comprising: a cathode active material layer, an anode active material layer, and a solid electrolyte layer formed between the cathode active material layer and the anode active material layer; wherein at least one of the cathode active material layer and the anode active material layer contains a sulfide solid electrolyte and a conductive auxiliary material; the conductive auxiliary material includes a carbon material Chaving a carboxyl group on its surface; and a weight ratio of the carboxyl group to overall of the carbon material Cis 8 weight % or more.

All-solid-state battery

A main object of the present disclosure is to provide a solid electrolyte including excellent fluoride ion conductivity. The present disclosure achieves the object by providing a solid electrolyte including fluoride ion conductivity, the solid electrolyte comprising: a crystal phase having a perovskite structure or a layered perovskite structure; the crystal phase contains A cation positioned in A site, B cation positioned in B site, and a fluoride ion; the A cation contains RRRRNcation (each of Rto Ris independently a hydrogen element or a hydrocarbon group with two or less carbon atoms) or a hydrocarbon cation with two or less carbon atoms; and the B cation contains a divalent metal cation and a monovalent metal cation.

Solid electrolyte and fluoride ion battery

Disclosed is a dual-ion secondary battery of high power and a high level of safety. The dual-ion secondary battery is an aqueous dual-ion secondary battery including: a cathode; an anode; and an aqueous electrolyte solution, wherein the cathode includes graphite as a cathode active material, the anode includes titanium oxide as an anode active material, and the aqueous electrolyte solution contains no less than 10 mol of lithium bis(trifluoromethanesulfonyl)imide per kilogram of water.

Aqueous dual-ion secondary battery

A method for producing a sulfide all-solid-state battery with a high capacity retention rate, and a sulfide all-solid-state battery with a high capacity retention rate. The method for producing a sulfide all-solid-state battery may comprise forming a sulfide all-solid-state battery, initially charging the sulfide all-solid-state battery after the forming of the sulfide all-solid-state battery, and exposing the sulfide all-solid-state battery to an oxygen-containing gas atmosphere at at least any one of a time of the initially charging of the sulfide all-solid-state battery and a time after the initially charging of the sulfide all-solid-state battery.

Method for producing sulfide all-solid-state battery and sulfide all-solid-state battery

A battery active material includes a crystal phase that is represented by a formula YScTiOS(where 0&#x3c;x&#x3c;2), and has a Ruddlesden-Popper structure.

Battery active material comprising a crystal phase having a Ruddlesden-Popper structure and battery including the same

An active material for a battery, which has high thermal stability and low electric potential. According to the invention, an active material for a battery including an M element in Group III, a Ti element, an O element, and an S element and having an MTiOScrystalline phase is provided to solve the problem.

Active material for battery, and battery

An active material for a battery contains a YTiOScrystalline phase, and has an I/Ivalue of 0.3 or smaller and an I/Ivalue of 0.15 or smaller, wherein I, Iand Iare the peak intensity of the YTiOScrystalline phase at 2&#x3b8;=34.5&#xb0;, the peak intensity of a YTOcrystalline phase at 2&#x3b8;35.6&#xb0;, and the peak intensity of TiSat 2&#x3b8;=34.1&#xb0;, respectively, that are measured by X-ray diffraction using CuK&#x3b1; radiation. The active material is synthesized by preparing a raw material composition containing TiS, TiOand YOand having a molar ratio of TiSto YOof higher than 1 or containing TiS, TiOand YOand having a molar ratio of TiOto YOof lower than 1, and heating the raw material composition. A positive or negative-electrode active material layer included in the battery may be contain the active material.

Active material for battery, battery, and method for production of active material for battery

A negative-electrode active material includes a compound that has a pseudobrookite structure.

Growing community of inventors

Susono, Japan

Takeshi Tojigamori