Toyota Jidosha Kabushiki Kaisha

Tsinghua University

Toyota Motor Engineering & Manufacturing North America, Inc.

Toyota Motor Corporation

T/j Technologies, Inc.

Shoji Yokoishi

Christopher Edward Lee

Chihiro Yada

Duncan Clifford Alan Smith

Thierry Le Gall

Brian Elliott Hayden

Hiroshi Suyama

Shigenori Hama

Pu Zhang

Wen Li

Monique Nathalie Richard

Liya Wang

Kimber Lee Stamm

Yoshitaka Minamida

Yukinari Kotani

John M Miller

Tatsuhiko Shimizu

Suresh Mani

Brian Elliot Hayden

Junqing Ma

Brian Glomski

Hiroyuki Kimoto

Shih-Chieh Yin

Lin Yuanhua

Chris Silkowski

Yuchuan Feng

Ao Mei

Cewen Nan

A main object of the present invention is to provide a Li&#x2014;La&#x2014;Ti&#x2014;O based solid electrolyte material having high Li ion conductivity in the crystal grain boundary. The present invention attains the object by providing solid electrolyte material represented by a general formula: Li(LaM1) (TiM2)O, wherein 'x' is 0&#x3c;x&#x3c;0.17; 'a' is 0&#x2266;a&#x2266;0.5; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;0.5; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga, and wherein the solid electrolyte material is a crystalline material, is in thin film form, and has a thickness of 250 nm to 850 nm.

Solid electrolyte material, lithium battery, and method of producing solid electrolyte material

A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Li(LaM1)(TiM2)O, characterized in that 'x' is 0&#x3c;x&#x2266;1; 'a' is 0&#x2266;a&#x2266;2; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;3; &#x201c;&#x3b4;&#x201d; is &#x2212;2&#x2266;&#x3b4;&#x2266;2; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.

A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Li(LaM1)(TiM2)O, characterized in that 'x', 'y', and &#x201c;z&#x201d; satisfy relations of x+y+z=1, 0.652&#x2266;x/(x+y+z)&#x2266;0.753, and 0.167&#x2266;y/(y+z)&#x2266;0.232; &#x201c;a&#x201d; is 0&#x2266;a&#x2266;1; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;1; &#x201c;&#x3b4;&#x201d; is 0.8&#x2266;&#x3b4;&#x2266;1.2; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.

A main object of the present invention is to provide a solid electrolyte material having excellent Li ion conductivity. To attain the object, the present invention provides a solid electrolyte material represented by a general formula: Li(LaM1)(TiM2)O, wherein 'x', 'y', and &#x201c;z&#x201d; satisfy relations of x+y+z=1, 0.850&#x2266;x/(x+y+z)&#x2266;0.930, and 0.087&#x2266;y/(y+z)&#x2266;0.115; &#x201c;a&#x201d; is 0&#x2266;a&#x2266;1; &#x201c;b&#x201d; is 0&#x2266;b&#x2266;1; &#x201c;&#x3b4;&#x201d; is 0.8&#x2266;&#x3b4;&#x2266;1.2; &#x201c;M1&#x201d; is at least one selected from the group consisting of Sr, Na, Nd, Pr, Sm, Gd, Dy, Y, Eu, Tb, and Ba; and &#x201c;M2&#x201d; is at least one selected from the group consisting of Mg, W, Mn, Al, Ge, Ru, Nb, Ta, Co, Zr, Hf, Fe, Cr, and Ga.

The invention relates to a lithium lanthanum titanate composite solid electrolyte material containing silicon in which amorphous Si or an amorphous Si compound exist in a grain boundary between crystal grains, and a method of producing the same, and belongs to a field of a lithium ion battery. According to the invention, the amorphous Si or the amorphous Si compound exist in the grain boundary between the crystal grains of the lithium lanthanum titanate. The amorphous Si or the amorphous Si compound are introduced into the grain boundary by employing a wet chemical method. In the wet chemical method, the inexpensive organosilicon compound is used as an additive, and the organosilicon compound is added into the lithium lanthanum titanate solid electrolyte material. Thus, it is possible to synthesize the lithium lanthanum titanate composite solid electrolyte material containing silicon by performing sintering when the ratio of mass of the Si or mass of the Si calculated based on mass of the Si compound to mass of the lithium lanthanum titanate is 0.27% to 1.35%.

Li-La-Ti-O composite solid electrolyte material containing silicon and synthesizing method thereof

A solid-state battery has a power generation element () having a cathode layer (), a sulfide-based solid electrolyte membrane (), an anode layer () that are stacked in this order; a battery case () in which the power generation element is disposed; and a flowable sealant () provided in the battery case and being non-reactive with the sulfide-based solid electrolyte membrane, the power generation element being soaked in the flowable sealant.

Solid-state battery

An anode material with lithium-alloying particles contained within a porous support matrix is provided. The porous support matrix preferably has a porosity of between 5 and 80% afforded by porosity channels and expansion accommodation pores, and is electrically conductive. More preferably the support matrix has a porosity of between 10 and 50%. The support matrix is made from an organic polymer, an inorganic ceramic or a hybrid mixture of organic polymer and inorganic ceramic. The organic polymer support matrix and can be made from a rod-coil polymer, a hyperbranched polymer, UV cross-linked polymer, heat cross-linked polymer or combination thereof. An inorganic ceramic support matrix can be made from at least one group IV-VI transition metal compound, with the compound being a nitride, carbide, oxide or combination thereof. The lithium-alloying particles are preferably nanoparticles with a mean linear dimension of between 5 and 500 nanometers, and more preferably have a mean linear dimension of between 5 and 50 nanometers.

High performance anode material for lithium-ion battery

An electric double layer capacitor which is usable at a high voltage without causing an irreversible current. Both a polarized positive electrode 14 and a polarized negative electrode 16 are made of the same constituents. However, a ratio of an amount of constituents of the polarized positive electrode 14 differs from that of the polarized negative electrode 16. A ratio of a capacitance of the polarized positive electrode to a capacitance of the polarized negative electrode is controlled such that the polarized positive electrode and the polarized negative electrode simultaneously reach respective potentials where the irreversible current is caused. According to this invention there is an advantage that it is possible to increase a voltage applied to the electric double layer capacitor.

Electric double layer capacitor

Growing community of inventors

Mishima, Japan

Shoji Yokoishi