Current Journal of Applied Science and Technology

One Pot Synthesis of Zr4+doped Carbon Coated LiFePO4 Cathode Material for Rechargeable Li-ion Battery

Bikash Mandal

Electrochemistry Laboratory, Department of Chemistry, Visva-Bharati University, Santiniketan-731235, India.

I. Basumallick *

Electrochemistry Laboratory, Department of Chemistry, Visva-Bharati University, Santiniketan-731235, India.

Susanta Ghosh *

Electrochemistry Laboratory, Integrated Science Education and Research Centre, Visva-Bharati University, Santiniketan-731235, India.

*Author to whom correspondence should be addressed.

---

Abstract

Zr⁴⁺ doped carbon coated LiFePO₄ cathode [C-LiZr_xFe_1-xPO₄ (where x=0.02)] material were synthesized by a one pot solid-state synthetic route for its use in rechargeable lithium-ion battery. The carbon coating over the phosphate material was done using a natural precursor, camphor. The calcinations and sintering temperatures were set at 450ºC and 700ºC, respectively, which were selected from the TGA-DTA experiment. The synthesized materials were characterized by various spectroscopic techniques, such as; FTIR, Powdered XRD and SEM. Electrochemical studies of the synthesized materials were carried out by cyclic voltametry and charge-discharge behavior after preparing a laboratory model cell against lithium anode. It was found that C-LiZr_xFe_1-xPO₄ (where x=0.02) material coated with carbon from a natural precursor (camphor) shows better discharge capacity of 159 mAhg^-1 during the first few cycles compare to that of pure LiFePO₄.

Keywords: Zr4  doped carbon coated LiFePO4 cathode, camphor precursor, solid-state synthesis, Li-ion battery

---

---