Tohoku University

Samsung Electronics Co., Ltd.

Hitachi, Ltd.

Tohoku Techno Arch Co., Ltd.

Itaru Honma

Yuichi Aihara

Seitaro Ito

Jun Kawaji

Tsutomu Nakamura

Shinya Yoshida

Yoshiyuki Ganbe

Nobuto Oka

Murukanahally Kempaiah Devaraju

Satoshi Mitani

Takaaki Tomai

Hiroshi Hyodo

Yuki Hanyu

Erina Yokoyama

A battery includes a main body having a space therein, and including a channel communicating between an outside and the space; a pair of electrodes adjoining the space; and a valve that closes the channel responsive to pH.

Battery and electronic device

It is an objective of the invention to provide a quasi-solid state electrolyte that has a well-balanced combination of contact performance with electrode active materials, conductivity, and chemical and structural stability, each at a high level, and an all solid state lithium secondary battery using the quasi-solid state electrolyte. There is provided a quasi-solid state electrolyte comprising: metal oxide particles; and an ionic conductor, the ionic conductor being a mixture of either a glyme or DEME-TFSI and a lithium salt that includes LiFSI, and being carried by the metal oxide particles.

Quasi-solid state electrolyte and all solid state lithium secondary battery using same

A lithium ion secondary battery including: a cathode including a plurality cathode active material particles; an electrolyte; and an anode, wherein a cathode active material particle of the plurality of cathode active material particles has a plate-shaped crystal structure having an aspect ratio of 2 to 1000, wherein a major surface in at least one direction of the plate-shaped crystal structure is a 111 face, wherein the cathode active material particle also has a spinel-type crystal structure, and wherein the cathode active material particle has a composition represented by the formula LiCoNiO, wherein 0&#x3c;x&#x3c;2.

Cathode active material particles, lithium ion battery prepared by using the cathode active material particles, and method of preparing the cathode active material particles

An electrode material for electricity storage devices includes: an active material including at least one of quinone having a halogen group and hydroquinone having a halogen group; and a porous body supporting the active material.

Electricity storage device and electrode material therefor

A secondary battery charged and discharged even after dissolution. The active material in the cathode body and/or the anode body is a liquid, or the active material undergoes phase transition into a liquid is provided. The secondary battery () includes: a cathode collector (), a cathode body (), a solid electrolyte (), an anode body (), and an anode collector (). The cathode body and the anode body are sealed by the solid electrolyte, the cathode collector, and/or the anode collector. The cathode body and the anode body preferably contain an active material that undergoes phase transition from a solid to a liquid, or to a phase containing a liquid, due to charge and discharge. The cathode body or the anode body preferably contains a liquid active material. A polymeric layer may be inserted between the cathode body and/or the anode body and the solid electrolyte.

Secondary battery

Growing community of inventors

Sendai, Japan

Itaru Honma