Patent · US Active

Boron-doped lithium-rich manganese based materials and preparation methods for Li-ion battery cathode

US9496066B2 · kind B2 · utility

0Cited by

3References

5Claims

0Family size

Assignee

Peking University · CN

Inventors

Biao Li · Changzhou City, CN
Jin Ma · Greenbelt, US
Dingguo XIA · Beijing, CN

Key dates

Filing date	Nov 5, 2013
Grant date	Nov 15, 2016
Priority date	—
Expiry date	Nov 5, 2033

Classification

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

Abstract

The present application discloses boron-doped lithium rich manganese based materials for cathodes of lithium ion batteries. The disclosed cathode materials can be prepared by co-precipitation and sol-gel methods. The chemical formula of this cathode material is Li[LiaMnbCocNidBx]O2 (a+b+c+d+x=1, a, b, x>0, c≧0, d≧0, c+d>0). Lithium ion batteries using these cathode materials show impressive improvements in performance and increased tap density at low level of boron doping. The co-precipitation method is particularly suitable for large-scale industrial production. The sol-gel method is simple and can produce fine and uniform particles.

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