Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Osaka City University

Matsushita Electric Industrial Co., Ltd.

Sumitomo Metal Mining Company, Ltd.

National Institute for Materials Science

Panasonic Holdings Corporation

Kensuke Nakura

Ryuichi Natsui

Akira Kano

Ryohei Miyamae

Issei Ikeuchi

Kazuko Asano

Takayuki Ishikawa

Kiyohiro Isii

Junko Matsushita

Hiroshi Yoshizawa

Mitsuhiro Hibino

Shuhei Uchida

Kazuyoshi Honda

Junichi Sakamoto

Takashi Takeuchi

Akihiro Taniguchi

Takuji Tsujita

Shuji Tsutsumi

Tsutomu Ohzuku

Tooru Matsui

Yoshikazu Yamaoka

Hideo Sasaoka

Jin Zhang

Takanori Omae

Atsushi Fukui

Mikinari Shimada

Satoshi Matsumoto

Izuru Sasaki

Hajime Nishino

Keiichi Takahashi

Kazuhiro Okamura

Hidekazu Hiratsuka

Hirotetsu Suzuki

Kazuya Terabe

Miyuki Nakai

Shin Imaizumi

Takafumi Oura

Norihiro Yamamoto

Kozo Watanabe

Mitsuhiro Takeno

Masahiro Kinoshita

Yutaka Kawatate

Hiroshi Matsuno

Youshin Lee

Kenichi Honoki

Hiroaki Furuta

Ryuuichi Kuzuo

Mitsukuni Kondou

Tohru Tsuruoka

Jin Su

Yu Nishitani

This positive electrode active material for nonaqueous electrolyte secondary batteries contains a lithium transition metal composite oxide that is represented by composition formula LiMnNiPMOF(wherein M represents at least one element that is selected from among Ti, Co, Si, Sr, Nb, W, Mo, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K and Bi; 1.0<x≤1.2; 0.4≤y≤0.8; 0≤z≤0.4; 0<a<0.01; 0<b<0.05; 0<c<0.1; and (x+y+z+a+b)≤2).

Positive electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery

This charging method is A method for charging a nonaqueous electrolyte secondary cell containing a lithium-rich positive-electrode active material. When constant-current charging is performed to a predetermined voltage Vwhich is equal to or higher than a setting voltage Vand then constant-current discharging is performed to a predetermined voltage VV<V≤Vis satisfied. Cell capacity Cat Vcell capacity Cat Vand cell capacity Cat Vsatisfy 0.99C≤C<C

Method for charging nonaqueous electrolyte secondary cell having lithium-transition metal positive electrode active material

A positive electrode active material includes a first lithium composite oxide and a second lithium composite oxide that covers at least a part of the surface of the first lithium composite oxide. The first lithium composite oxide includes at least one selected from the group consisting of F, Cl, N, and S. The first lithium composite oxide has a crystal structure belonging to a layered structure. The second lithium composite oxide has a crystal structure belonging to space group Fd-3m. The positive electrode active material has an integrated intensity ratio I)/Iof greater than or equal to 0.05 and less than or equal to 0.90.

Positive electrode active material and battery including the same

A solid electrolyte according to the present disclosure has a composition represented by MgZr(PO)(0<x≤3.5, 0≤y<1.5, and 3≤z≤4.25), and includes an amorphous part. The composition may be represented by Mg(PO)(3≤x≤3.5 and 3≤z≤4.25). The composition may be represented by MgZr(PO)(0<x<3.5, 0<y<1.5, and 3≤z≤4.25).

Solid electrolyte and magnesium secondary battery using same

A positive electrode active material according to the present disclosure includes a lithium composite oxide that is a multiphase mixture including a first phase having a crystal structure belonging to a monoclinic crystal (e.g., space group C2/m), a second phase having a crystal structure belonging to a hexagonal crystal (e.g., space group R-3m), and a third phase having a crystal structure belonging to a cubic crystal (e.g., space group Fm-3m or space group Fd-3m). In addition, a battery according to an aspect of the present disclosure includes a positive electrode containing the positive electrode active material, a negative electrode, and an electrolyte. The positive electrode active material according to the present disclosure improves the capacity of the battery.

Positive electrode active material and battery comprising the same

A positive electrode active material includes a lithium composite oxide having a crystal structure belonging to the space group Fd-3m and has an integrated intensity ratio I/Iof greater than or equal to 0.05 and less than or equal to 0.90 and an integrated intensity ratio I/Iof greater than or equal to 0.8 and less than or equal to 2.0. The integrated intensity ratio I/Iis a ratio of an integrated intensity Ito an integrated intensity I. The integrated intensity ratio I/Iis a ratio of an integrated intensity Ito an integrated intensity I. The integrated intensity Iis an integrated intensity of a maximum peak present in a range of angle of diffraction 2θ greater than or equal to A° and less than or equal to B° in the X-ray diffraction pattern of the positive electrode active material.

A positive electrode active material according to the present disclosure includes a lithium composite oxide. The lithium composite oxide is a multiphase mixture including a first phase having a crystal structure belonging to space group C2/m and a second phase having a crystal structure belonging to space group R-3m and includes at least one selected from the group consisting of F, Cl, N, and S. In an XRD pattern of the lithium composite oxide, the integrated intensity ratio I/Iof a second maximum peak present in a diffraction angle 2θ range of greater than or equal to 20° and less than or equal to 23° to a first maximum peak present in a diffraction angle 2θ range of greater than or equal to 18° and less than or equal to 20° satisfies 0.05≤I/I≤0.26.

A positive electrode active material according to the present disclosure includes: a lithium composite oxide which includes Mn and at least one selected from the group consisting of F, Cl, and N, and S. The lithium composite oxide has a crystalline structure which belongs to the space group Fd-3m, and a relationship 1.40≤intensity ratio I/I≤1.90 is satisfied. The intensity ratio I/Iis a ratio of an intensity Ito an intensity I. The intensity Iand the intensity Iare intensities of a first proximity peak and a second proximity peak, respectively, of the Mn in a radial distribution function of the Mn included in the lithium composite oxide.

A positive electrode active material according to the present disclosure includes a lithium composite oxide that contains first particles having a crystal structure belonging to space group R-3m and second particles having a crystal structure belonging to space group C2/m. The crystal structure of the second particles has a larger amount of cation mixing than the crystal structure of the first particles. The second particles have a smaller particle size than the first particles. Mathematical Formula 0.05≤integrated intensity ratio I/I≤0.99 is satisfied. The integrated intensity ratio I/Iis a ratio of the integrated intensity Ito the integrated intensity I. The integrated intensity Iis the integrated intensity of a maximum peak present in the range of angle of diffraction 2θ greater than or equal to A° and less than or equal to B° in the X-ray diffraction pattern of the lithium composite oxide.

Positive electrode active material and battery including same

A positive-electrode active material containing a compound that has a crystal structure belonging to the space group FM-3M and is represented by the composition formula (1):LiMeOF&#x2003;&#x2003;(1) wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, and Al, and the following conditions are satisfied. 1.3&#x2264;x&#x2264;2.2, 0.8&#x2264;y&#x2264;1.3, 1&#x2264;&#x3b1;&#x2264;2.93, 0.07&#x2264;&#x3b2;&#x2264;2.

Positive-electrode active material and battery

A positive-electrode active material contains a lithium composite oxide containing manganese. The crystal structure of the lithium composite oxide belongs to a space group Fd-3m. The integrated intensity ratio I/Iof a first peak Ion the (111) plane to a second peak Ion the (400) plane in an XRD pattern of the lithium composite oxide satisfies 0.05&#x2264;I/I&#x2264;0.90.

Positive-electrode active material containing lithium composite oxide, and battery including the same

A positive-electrode active material contains a compound that has a crystal structure belonging to a space group FM3-M and contains is represented by the composition formula (1) and an insulating compound,LiMeOF&#x2003;&#x2003;(1)wherein Me denotes one or two or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr, and the following conditions are satisfied.1.7&#x2264;&#x2264;2.20.8&#x2264;&#x2264;1.31&#x2264;&#x3b1;&#x2264;2.50.5&#x2264;&#x3b2;&#x2264;2

A positive-electrode active material contains a lithium composite oxide containing at least one selected from the group consisting of F, Cl, N, and S. The crystal structure of the lithium composite oxide belongs to a space group C2/m. An XRD pattern of the lithium composite oxide comprises a first peak within the first range of 44 degrees to 46 degrees of a diffraction angle 2&#x3b8; and a second peak within the second range of 18 degrees to 20 degrees of the diffraction angle 2&#x3b8;. The ratio of the second integrated intensity of the second peak to the first integrated intensity of the first peak is within a range of 0.05 to 0.90.

A lithium secondary battery includes a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte having lithium-ion conductivity. A negative electrode current collector includes a layer having a first surface and a second surface opposite to the first surface, first protrusions protruding from the first surface, and second protrusions protruding from the second surface. The first and second surfaces are surfaces on which lithium metal is deposited during charge. When viewed in a direction of a normal to the first surface, a total area of overlap between the first protrusions and the second protrusions is &#xbd; or less of a total area of the first protrusions.

Lithium secondary battery including nonaqueous electrolyte having lithium-ion conductivity

Provided is an active material for a fluoride-ion secondary battery, the active material containing a composite fluoride. The composite fluoride has a layered structure and is represented by a composition formula AMF, where A is an alkali metal, M is a transition metal, 0&#x3c;m&#x2264;2, 1&#x2264;n&#x2264;2, and 3&#x2264;x&#x2264;4. The alkali metal may be at least one kind selected from the group consisting of Na, K, Rb, and Cs. The transition metal may be a 3transition metal.

Active material for fluoride-ion secondary battery and fluoride-ion secondary battery using same

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Osaka, Japan

Kensuke Nakura