SECONDARY BATTERY, ELECTRONIC DEVICE, VEHICLE, AND METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL

Title:

SECONDARY BATTERY, ELECTRONIC DEVICE, VEHICLE, AND METHOD FOR PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL

Document Type and Number:

WIPO Patent Application WO/2022/034414

Kind Code:

A1

Abstract:

The present invention provides a positive electrode active material which is not susceptible to a collapse of the crystal structure even if charging and discharging are repeated. The present invention provides a positive electrode active material which has a large charge/discharge capacity. The surface of this positive electrode active material is provided with a projected part. It is preferable that the projected part comprises zirconium and yttrium, while having the shape of a rectangular parallelepiped. It is also preferable that the projected part has a cubic crystal structure, a tetragonal crystal structure or a two-phase mixed crystal structure of a cubic crystal and a tetragonal crystal. It is also preferable that one or more transition metals selected from among cobalt, nickel and manganese are contained in this positive electrode active material, while at least two elements selected from among magnesium, fluorine, aluminum, zirconium and yttrium are contained therein as additive elements.

More Like This:

JP7405929	Lithium metal composite oxide, positive electrode active material for lithium secondary batteries, positive electrode for lithium secondary batteries, and lithium secondary batteries
WO/2005/054137	METHOD FOR SEPARATING PB AND NI FROM CO-CONTAINING MIXTURES
JP5767743	Solid oxide fuel cell and air electrode material

Inventors:

SAITO JO (JP)
MOMMA YOHEI (JP)
OCHIAI TERUAKI (JP)
YOSHITANI YUSUKE (JP)
ABE KANTA (JP)
TANEMURA KAZUKI (JP)
YAMAZAKI SHUNPEI (JP)

Application Number:

PCT/IB2021/056835

Publication Date:

February 17, 2022

Filing Date:

July 28, 2021

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SEMICONDUCTOR ENERGY LAB (JP)

International Classes:

C01G53/00; H01M4/131; H01M4/36; H01M4/505; H01M4/525; H01M4/62

Domestic Patent References:

WO2015111710A1

2015-07-30

Foreign References:

JP2012190773A	2012-10-04
JP2018503941A	2018-02-08
JP2009104805A	2009-05-14
JP2019175631A	2019-10-10
JP2018055808A	2018-04-05
JP2007035358A	2007-02-08
JP2011034943A	2011-02-17

Download PDF:

View/Download PDF PDF Help

Previous Patent: LIGHT-EMITTING DEVICE, LIGHT-EMITTING APPARATUS, DISPLAY APPARATUS, ELECTRONIC APPARATUS, AND LIGHTI...

Next Patent: MACHINE FOR FORMING BAGS WITH INFUSION OR EXTRACTION PRODUCTS