Solid solution composite LIMVO4-LINI-X-YCOXMNYO2 material for rechargeable lithium ion batteries

US9917301B2 · kind B2 · utility

Assignees

• NINGBO INSTITUTE OF MATERIALS TECHNOLOGY & ENGINEERING, CHINESE ACADEMY OF SCIENCES · CN
• GUANGDONG KEPRIME ENERSTORE LTD · CN

Inventors

• Jun Li · Ningbo City, CN
• Jinhua He · Jiangning, CN
• Zhenlian Chen · Ningbo City, CN
• Xianhui Zhang · Richland, US
• Yuanhao Tang · Zhejiang, CN
• Deyu Wang · Shanghai, CN

Key dates

• Filing date: Aug 1, 2012
• Grant date: Mar 13, 2018
• Expiry date: Jun 30, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49108
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Described herein are solid solution composites that are used as cathode materials for lithium-ion batteries. The solid solution composite of α LiMVO4-βLiNi1-x-yCoxMnyO2, in which LiMVO4 has cubic close-packed structure, LiNi1-x-yCoxMnyO2 has hexagonal layered structure, and both share an oxygen lattice fully or partly. The new solid solution materials have advantage for lithium-ion batteries that the working voltage of the composite is adjustable by controlling the molar ratio of α and β and have higher working voltage than current secondary battery materials.Also described herein are methods of preparing such composite.