Patent · US Active

Method for making cathode active material of lithium ion battery

US9923204B2 · kind B2 · utility

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16Claims

0Family size

Assignees

JIANGSU HUADONG INSTITUTE OF LI-ION BATTERY CO., LTD · CN
TSINGHUA UNIVERSITY · CN

Inventors

Zhong-Jia Dai · Beijing, CN
Xiang-Ming He · Beijing, CN
Li Wang
Jian Li · Shanghai, CN
Yu-Ming Shang · Beijing, CN
Jian Gao · Beijing, CN
Yao-Wu Wang · Beijing, CN

Key dates

Filing date	Aug 22, 2016
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Aug 22, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for making a cathode active material of a lithium ion battery is disclosed. In the method, LiMPO4 particles and LiNPO4 particles are provided. The LiMPO4 particles and LiNPO4 particles both are olivine type crystals belonged to a pnma space group of an orthorhombic crystal system, wherein M represents Fe, Mn, Co, or Ni, N represents a metal element having a +2 valence, and N is different from M. The LiMPO4 particles and the LiNPO4 particles are mixed together to form a precursor. The precursor is calcined to form LiMxN1-xPO4 particles, wherein 0<x<1.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.