Kabushiki Kaisha Toshiba

Koji Takazawa

Seiji Morita

Hideo Ando

Naoki Morishita

Kazuyo Umezawa

Yasuaki Ootera

Naomasa Nakamura

Shinichi Katsuda

Norio Takami

Hidesato Saruwatari

Tsukasa Nakai

Takuya Iwasaki

Nobuhisa Yoshida

Takahiro Yamamoto

Tomokazu Morita

Yoshinao Tatebayashi

Keiichiro Yusu

Sumio Ashida

Yoshiyuki Isozaki

Kaoru Koiwa

Hisaaki Hatano

Kenichi Fujiwara

Yasuaki Murashi

Kohei Maruchi

Shun Egusa

Hidetoshi Watanabe

There is provided a rechargeable battery evaluation device including: a charging controller configured to switch charging current of a rechargeable battery being charged with first current to second current; and a first state estimator configured to estimate a state of the rechargeable battery based on a feature of change in at least one of a voltage and a charging amount of the rechargeable battery due to switching from the charging current to the second current.

Information processing apparatus, method and system

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, 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;)I/I&#x2003;&#x2003;(1)

According to one embodiment, there is provided a battery including a positive electrode, and a negative electrode. The positive electrode contains a lithium-cobalt composite oxide and a lithium-manganese composite oxide. The negative electrode contains a lithium titanium composite oxide. The battery satisfies the following formula (1). In addition, an open circuit voltage (OCV) of the positive electrode when the battery is discharged to 1.8 V at 0.2 C is 3.6 V (Li v.s. Li) or more.()&#x3e;1.1&#x2003;&#x2003;(1) Qp is a charge capacity (mAh/m) of the positive electrode per unit area, and Qn is a charge capacity (mAh/m) of the negative electrode per unit area.

Battery

A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification.

Information storage medium, reproducing method, and recording method

A machine readable information storage medium, a reproducing method and apparatus which reproduces data from the storage medium, and a recording method and apparatus for recording data on the storage medium. The information storage medium includes a control area which stores within a data structure information usable by the recording or reproducing apparatus to record or reproduce the data on or from the storage medium. The information stored within the data structure includes a version corresponding to a specification, a revision number of recording speed, and an extended part version field.

Growing community of inventors

Tokyo, Japan

Koji Takazawa