Kabushiki Kaisha Toshiba

Toshiba Infrastructure Systems & Solutions Corporation

Takuya Iwasaki

Norio Takami

Hiroki Inagaki

Yasuhiro Harada

Tomoko Sugizaki

Kazuomi Yoshima

Takashi Kishi

Kazuhiro Yasuda

Keigo Hoshina

Yorikazu Yoshida

Mitsuru Ishibashi

Koji Takazawa

Hidesato Saruwatari

Tetsuya Sasakawa

Jun Tamura

Dai Yamamoto

Kazuki Ise

Hiroki Iwanaga

Hideki Satake

Wen Zhang

Taro Fukaya

Tomoe Kusama

According to one embodiment, there is provided an electrode including active material particles, polymer fibers and inorganic solid particles. The polymer fibers have an average fiber diameter of 1 nm to 100 nm.

Electrode, secondary battery, battery pack, and vehicle

According to one embodiment, an electrode group includes a positive electrode active material-containing layer, a negative electrode active material-containing layer, a lithium ion conductive layer, and a porous layer. The lithium ion conductive layer includes lithium-containing inorganic particles. The lithium ion conductive layer covers at least part of the positive electrode active material-containing layer. The porous layer covers at least part of the negative electrode active material-containing layer. The positive electrode active material-containing layer and the negative electrode active material-containing layer face each other via the lithium ion conductive layer and the porous layer.

Electrode group, secondary battery, battery pack, and vehicle

According to one embodiment, an active material is provided. The active material includes particles of a monoclinic niobium titanium composite oxide. The particles include primary particles. The primary particles have an average aspect ratio of 5 or more.

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

According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average value (FU) of the roughness shape coefficient (FU) according to Formula (1) below is 0.70 or more in 100 primary particles among the plurality of primary particles. 

A secondary battery includes a positive electrode, a negative electrode arranged opposite to the positive electrode, a composite electrolyte interposed between the positive electrode and the negative electrode, the composite electrolyte containing an organic electrolyte and at least one of inorganic compound particles and organic compound particles; and a fibrous substance existed in both of the composite electrolyte and at least one of the positive electrode and the negative electrode.

Secondary battery, battery pack, and vehicle

According to one embodiment, a nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode includes a titanium and niobium-containing composite oxide. The nonaqueous electrolyte includes at least one compound selected from compounds represented by the formulas (1) and (2). 

Nonaqueous electrolyte battery, battery pack, and vehicle

According to one embodiment, an electrode structure is provided. The electrode structure includes a current collector, an active material layer provided on at least one surface of the current collector, and a separator layer provided on the active material layer. The separator layer includes a first region, and a second region which is adjacent to the first region and exists in the inside of the first region. An outline of a principal surface of the active material layer overlaps the first region of the separator layer, and a thickness of at least a part of the first region is thicker than a thickness of the second region.

Electrode structure, secondary battery, battery pack, and vehicle

According to one embodiment, a battery is provided. The battery includes one or more electrode stack. The one or more electrode stack includes an electrolyte layer, a first electrode layer, and a second electrode layer. The electrolyte layer includes an electrolyte and a carboxymethylcellulose sodium salt. The first electrode layer includes a first active material and a carboxymethylcellulose ammonium salt. The second electrode layer includes a second active material and a first binder soluble in an organic solvent. The first electrode layer is bound to a first surface of the electrolyte layer. The second electrode layer is bound to a second surface of the electrolyte layer on a reverse side to the first surface.

Battery, battery pack, and vehicle

According to one embodiment, an electrode composite is provided. The electrode composite includes a negative electrode active material-containing layer and an insulating particle layer. The negative electrode active material-containing layer includes negative electrode active material secondary particles having an average secondary particle size of from 1 &#x3bc;m to 30 &#x3bc;m. The insulating particle layer is provided on the negative electrode active material-containing layer. The insulating particle layer includes a first surface and a second surface opposed to the first surface. The first surface is in contact with the negative electrode active material-containing layer. The second surface has a surface roughness of 0.1 &#x3bc;m or less.

Electrode composite, secondary battery, battery pack and vehicle

According to one embodiment, an electrode is provided. The electrode includes a current collector and an active material-containing layer. The active material-containing layer is provided on the current collector. The active material-containing layer includes active material particles and insulator particles. The active material-containing layer has a first surface facing the current collector and a second face as a surface of the active material-containing layer. The second face includes a surface of a part of the insulator particles. A volume ratio of the insulator particles decreases from the second face toward the first surface in the active material-containing layer.

Electrode, nonaqueous electrolyte battery, battery pack and vehicle

An active material containing a monoclinic &#x3b2;-type titanium oxide or a monoclinic &#x3b2;-type titanium complex oxide. A carbonate ion is disposed on at least a part of a surface of the active material. The active material has a peak belonging to a carbonate ion in at least a. region of 1430&#xb1;30 cm, 1500&#xb1;30 cmand 2350&#xb1;30 cmin an infrared diffuse reflection spectrum obtained using a Fourier transform infrared spectrophotometer.

Active material for battery, nonaqueous electrolyte battery, and battery pack

According to one embodiment, an electrode structure is provided. The electrode structure includes a current collector, a separator layer, and an active material layer including a main surface and a first end face other than the main surface. The active material layer covers a first part of at least one surface of the current collector. The separator layer covers the main surface of the active material layer, at least a part of the first end face and second part of the at least one surface of the current collector.

Electrode structure, secondary battery, battery pack and vehicle

According to one embodiment, an electrode is provided. The electrode includes an active material containing-layer. The active material containing-layer includes active material particles containing at least one selected from a niobium titanium composite oxide and a composite oxide which is expressed by the general formula LiM1M2TiM3O. The active material particles include primary particles having an average particle diameter of 0.1 to 10 &#x3bc;m and secondary particles having an average particle diameter of 1 to 30 &#x3bc;m. A pore diameter distribution of the active material containing-layer which is obtained by mercury porosimetry has a first peak which has a maximum value within a range of 0.01 to 2 &#x3bc;m and a second peak which has a maximum value within a range of exceeding 6 &#x3bc;m and equal to or smaller than 20 &#x3bc;m. An intensity of the second peak is 1/10 to &#x2155; of an intensity of the first peak.

Electrode, nonaqueous electrolyte battery, battery pack, automobile, and vehicle

According to one embodiment, a positive electrode includes a positive electrode layer and a positive electrode current collector. The positive electrode layer includes a positive electrode active material including a first oxide represented by the following formula (&#x3b1;) and/or a second oxide represented by the following formula (&#x3b2;). The positive electrode layer has an intensity ratio falling within a range of 0.25 to 0.7. The ratio is represented by the following formula (1) in an X-ray diffraction pattern obtained by using CuK&#x3b1; radiation for a surface of the positive electrode layer.LiNiCoMnMO&#x2003;&#x2003;(&#x3b1;)LiNiCoMO&#x2003;&#x2003;(&#x3b2;)&#x2003;&#x2003;(1)

Positive electrode

According to one embodiment, there is provided a negative electrode. The negative electrode includes a negative electrode layer. The negative electrode layer contains a titanium composite oxide and a carboxymethyl-cellulose compound. The carboxymethyl-cellulose has a degree of etherification of 1 or more and 2 or less. The negative electrode layer has a density of 2.2 g/cmor more.

Growing community of inventors

Uenohara, Japan

Takuya Iwasaki