Kabushiki Kaisha Toshiba

Toshiba Infrastructure Systems & Solutions Corporation

Toshiba Battery Co., Ltd.

Toshiba Materials Co., Ltd.

Petoca, Ltd.

Toshiba Corporation

Titan Kogyo Kabushiki Kaisha

Kabushtkt Kaisha Toshiba

Norio Takami

Hiroki Inagaki

Yasuhiro Harada

Keigo Hoshina

Kazuomi Yoshima

Shinsuke Matsuno

Kazuki Ise

Hidesato Saruwatari

Yoshinao Tatebayashi

Tetsuya Sasakawa

Yasunobu Yamashita

Yorikazu Yoshida

Takuya Iwasaki

Takahisa Ohsaki

Wen Zhang

Yoshiyuki Isozaki

Takashi Kuboki

Takashi Kishi

Tomokazu Morita

Hideaki Morishima

Tomoko Sugizaki

Yasuyuki Hotta

Tomoe Kusama

Yumi Fujita

Yuki Otani

Motoya Kanda

Hiroyuki Hasebe

Tatsuoki Kohno

Mitsuru Ishibashi

Hayato Seki

Haruchika Ishii

Kazuhiro Yasuda

Yumiko Sekiguchi

Yusuke Namiki

Takao Sawa

Shuji Yamada

Dai Yamamoto

Asako Satoh

Yuta Kanai

Asako Sato

Nobuo Shibuya

Mitsuo Kasori

Taro Fukaya

Hiromichi Kuriyama

Tetsuro Kano

Fumiyuki Kawashima

Yuki Watanabe

Yuji Sato

Tetsuro Itakura

Koji Takazawa

Satoshi Mikoshiba

Takahiro Hirai

Shuzi Hayase

Kazuto Kuroda

Mami Mizutani

Hirohisa Miyamoto

Shinichiro Kosugi

Yukitaka Monden

Tatsuoki Kono

Masanori Tanaka

Toshio Tamaki

Takashi Morimoto

Akihiro Matsui

Ryo Hara

Takeo Hayase

Kuniaki Inada

Hisashi Oya

Takahisa Osaki

Norihito Kurisu

Fumihiro Tejima

Kakuya Ueda

Yoshihiko Nakano

Shoji Otaka

Hideki Satake

Michikazu Hara

Norihiro Yoshinaga

Kiyoshi Kanamura

Ryosuke Yagi

Yoshiaki Asami

Yoshiyuki Nishimura

Hideyuki Nakajima

Yuma Kikuchi

Toshimasa Seki

Toshiya Sakamoto

Shirou Takeno

Wataru Uno

Yasushi Katsuta

Hidenori Ishioka

Junichi Takabayashi

Miho Muramatsu

Wataru Mino

Kiyoshi Nakahara

Hironori Takatsuka

Hirofumi Yasumiishi

Nen Zhang

Takahisa Ohasaki

Yoshiaki Murata

According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer and a current collector. The active material-containing layer comprises a first edge having an arc shape and a second edge positioned opposite to the first edge. The current collector comprises an active material-supporting section supporting the active material-containing layer, and an active material-non-supporting section. The curving amount is represented by a maximum distance from the first edge to a reference line connecting two points on the first edge. The curving amount is in a range of −1 mm or more and less than 0 mm.

Battery electrode

According to a storage battery of an embodiment includes a first battery module and a second battery module connected in parallel with the first battery module. The number of first cells connected in series in the first battery module is M, and the number of second cells connected in series in the second battery module is N. When an open circuit voltage at SOC=X % of the first cells and the second cells are Va1 (X) and Va2 (X), respectively, the voltages of the battery modules are M×Va1 (X)<N×Va2 (X) in the range where the SOC of the cell is 0% to 30%, and M×Va1 (X)>N×Va2 (X) in the range where the SOC of the cell is 70% to 100%.

Storage battery

According to one embodiment, a battery is provided. The battery includes a positive electrode, and a negative electrode including a negative electrode active material-containing layer including a niobium-titanium composite oxide and a conductive agent that includes a carbon material. The negative electrode active material-containing layer includes a principal surface facing the positive electrode. Assuming that the thickness of the negative electrode active material-containing layer is A, a ratio (C2/C1) of carbon content ratio C2 at a depth of 0.5 A from the principal surface to carbon content ratio C1 at a depth of 1 μm from the principal surface satisfies 2≤C2/C1≤30.

Battery and battery pack

According to one embodiment, a secondary battery includes a positive electrode, a negative electrode and a separator. The positive electrode includes a first electrolyte containing aluminum ions. The negative electrode is capable of allowing lithium ions to be inserted and extracted. The separator is disposed between the positive electrode and the negative electrode. The separator has lithium ion conductivity.

Secondary battery, battery pack, vehicle, and stationary power supply

According to one embodiment, provided is an active material including a crystal particle that includes a niobium-titanium composite oxide. A ratio A/Aof a Nb abundance Ato a Ti abundance Ain the crystal particle satisfies 2.3≤A/A≤4.0. According to a powder X-ray diffraction spectrum using a Cu-Kα ray for the crystal particle, an intensity ratio I/Iof a peak intensity Iof a peak β appearing at 12.5°≤2θ≤13.0° to a peak intensity Iof a peak α appearing at 8.5°≤2θ≤9.0° is within a range of 0.1<I/I≤2.0.

Active material, electrode, secondary battery, battery pack, and vehicle

According to an embodiment, an electrode group is provided. The electrode group includes a positive electrode, and a negative electrode. The negative electrode active material-containing layer includes a facing section which faces the positive electrode active material-containing layer and a non-facing section which does not. A first fluorine-containing coating is formed on a main surface of the negative electrode active material-containing layer in at least a part of the non-facing section. The abundance ratio of fluorine atoms included in the first fluorine-containing coating is in the range of 2.5 atom % to 10 atom %.

Electrode group, secondary battery, battery pack, and vehicle

According to one embodiment, a secondary battery includes a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a halide including one or more metal elements selected from the group consisting of copper, iron, nickel, cobalt, tin, and zinc. The negative electrode includes one or more selected from the group consisting of lithium metal, a lithium alloy, and a compound capable of having Li inserted and extracted. The nonaqueous electrolyte contains aluminum ions. The separator has lithium ion conductivity and is interposed between the positive electrode and the negative electrode.

According to one embodiment, an electrode group is provided. The electrode group includes a positive electrode, a negative electrode, and a gel polymer layer interposed between the positive electrode and the negative electrode. At least a part of the negative electrode is opposed to the positive electrode. The gel polymer layer is formed of a gel electrolyte composed of a polymer material, an organic solvent and a lithium salt, and a sheet base member which supports the gel electrolyte, or the gel polymer layer is formed of only the gel electrolyte.

According to one embodiment, an electrode material is provided. The electrode material includes active material particle containing: a niobium-titanium composite oxide having an average composition in which a molar ratio of niobium to titanium (M/M) is greater than 2; and at least one element A selected from the group consisting of potassium, iron and phosphorus. The active material particle contain the element A at a concentration in the range of 100 ppm to 2000 ppm.

Electrode material, electrode, secondary battery, battery pack, and vehicle

According to one embodiment, provided is an electrode including a current collector and an active material-containing layer in contact with the current collector. The active material-containing layer contains a carbon nanotube and particles of titanium-containing oxide having an average particle size or 0.1 μm to 3 μm. A peel strength between the current collector and the active material-containing layer is within a range of 0.2 kN/m to 0.7 kN/m.

Electrode, electrode group, secondary battery, battery pack, and vehicle

According to one embodiment, provided is an active material including a composite oxide having a tetragonal crystal structure. The composite oxide is represented by general formula LiTiNbMO. Here, M is one selected from the group consisting of W and Mo, 0≤a≤b+4+3c, 0<b<2−2d, and 0<c<2−4d.

According to one embodiment, there is provided an active material represented by a general formula Li(NiCoMnM)(NbTaM′)O. Here, M is at least one selected from the group consisting of Li, Ca, Mg, Al, Ti, V, Cr, Zr, Mo, Hf, and W, M′ is at least one selected from the group consisting of K, P, Fe, Si, Na, Cu and Zn, and 1.0≤x≤1.3, 0≤a≤0.9, 0≤b≤1.0, 0≤c≤0.8, 0≤d≤0.5, a+b+c+d=1, 0.005≤s≤0.3, 0.0005≤t≤0.1, and 0≤u≤0.3 are satisfied.

According to one embodiment, an active material is provided. The active material includes an NbTiOphase and at least one Nb-rich phase selected from the group consisting of an NbTiOphase, an NbTiOphase, and an NbTiOphase. The active material includes potassium and phosphorus, and a total concentration of potassium and phosphorus in the active material is in the range of 0.01% by mass to 5.00% by mass. An average crystallite diameter is in the range of 80 nm to 150 nm. In a particle size distribution chart obtained by a laser diffraction scattering method, D10 is 0.3 μm or greater, and D90 is 10 μm or less. The active material satisfies a peak intensity ratio represented by the following Formula (1).0<≤0.25  (1)

According to one embodiment, an electrode includes a current collector and an active material-containing layer. The active material-containing layer includes an active material, a conductive agent, and cellulose fiber. The conductive agent includes carbon fiber. The active material-containing layer includes a first surface brought into contact with the current collector, and a second surface. 2000/mmor less of first agglomerates are present on the second surface. Each of the first agglomerates includes at least one of the carbon fiber or the cellulose fiber, and does not include the active material. Each of the first agglomerates has a longest diameter of 5 μm or more and a shortest diameter of 1 μm or more.

Electrode, secondary battery, battery pack, and vehicle

According to one embodiment, a composite electrolyte includes inorganic solid particles, an ionic liquid and 0.5 to 10% by weight of a fibrous polymer. The ionic liquid includes cations and anions. The fibrous polymer has an average fiber diameter of 1 to 100 nm.

Composite electrolyte, secondary battery, battery pack, and vehicle

Growing community of inventors

Yokohama, Japan

Norio Takami