Facile synthesis of grape-like Li[Li_0.13Mn_0.56Ni_0.31]O₂ with good electrochemical performance for lithium ion batteries

Abstract

Layered Li-rich oxide, Li[Li_0.13Mn_0.56Ni_0.31]O₂ is prepared by oxalic acid co-crystallisation method (OA). Physical characterisations reveal that the obtained material is uniform grape-like micro-nano spherical structure with diameter of about 5 μm, composed of 200–300 nm particles. Galvanostatic charge/discharge tests demonstrate enhanced cycling stability and largely increased rate capability of the material synthesised by OA, compared to that of solid-state method (SS).

Keywords:

• Layered Li-rich oxide
• micro-nano grape-like structure
• high-rate performance

Acknowledgement

This work is financially supported from China Scholarship Council (CSC) authors thank fruitful discussions with Prof. L. Lu from National University of Singapore.