Hierarchical structure LiFePO4@C synthesized by oleylamine-mediated method for low temperature applications

Abstract

In this paper, a hierarchical nanostructure LiFePO₄@C composite was firstly fabricated by an oleylamine mediated method. The oleylamine played a multifunctional role in restricting the particle size and forming the porous nano-structure of LiFePO₄@C composite. Benefiting from its hierarchical structure, LiFePO₄@C exhibited superior electrochemical performance, especially at low temperature. It can deliver a capacity of 117 mA h g⁻¹ at a current density of up to 700 mA g⁻¹ (about 5 C) at −20 °C.