リチウム二次電池用正極材およびその製造方法

Title:

リチウム二次電池用正極材およびその製造方法

Document Type and Number:

Japanese Patent JP4628704

Kind Code:

B2

Abstract:

To obtain a positive electrode material for LiNiO2system lithium secondary battery having high capacity and good particle shape (spherical shape) with a high pulverization yield.

A slurry, which consists of a particle having a hydroxide obtained by mixing a water solution of a nitrate of nitric acid zirconium oxide in addition to nickel nitrate and other metal nitrate as a main component, and a water solution of lithium hydroxide and a water solution phase having as a main component a nitrate, is sprayed and dried in high temperatures, and a precursor of granular lithium transition metal compound oxide having two phases of a hydroxide phase and a nitrate phase is formed. By calcining (tentative calcination and final calcination) the precursor, a lithium transition compound oxide having a Hardgrove grindability index of 90 or more is formed, and by crushing this, LiNiO2system positive electrode material powder containing Zr is obtained.

More Like This:

JP6236197	The anode for lithium batteries, and a lithium battery
JP4475882	Manufacturing method of positive electrode material for secondary batteries, and secondary batteries
WO/2018/079585	ELECTRODE FOR LITHIUM ION SECONDARY BATTERIES, AND LITHIUM ION SECONDARY BATTERY USING SAME

Inventors:

Michihisa Miyahara
Yohei Shiraishi
Seiji Tanno
Otomo Mitsuru
Tomoyoshi Koizumi

Application Number:

JP2004188577A

Publication Date:

February 09, 2011

Filing Date:

June 25, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

Kureha Co., Ltd.

International Classes:

H01M4/525; C01G53/00; H01M4/02; H01M4/505; H01M10/05

Domestic Patent References:

JP9139212A

Attorney, Agent or Firm:

Akio Saruwatari
Hisashi Hatano
Shunguchi Sekiguchi
Junichi Furukawa

Previous Patent: JPS4628703

Next Patent: JPS4628705