A new lithium-ion batteries derivated from waste bagasse: Preparation, characterization and application

Abstract

A cathode material carbon-coated Na2FePO4F (Na2FePO4F@C) was reported which were derivated from waste biomass bagasse as carbon source were prepared by wet ball milling and in-situ pyrolysis, due to the low cost and easy availability of biomass carbon materials. The performance results shown that the Na2FePO4F@C composite material prepared under the condition of 10% carbon source and calcination temperature of 650 °C crystallized well, and the carbon material was coated on the external of Na2FePO4F well with no damaging the crystal structure of the material. The first ring discharging specific capacity with Na2FePO4F@C was 128 mA h g−1 based on 0.1 C current density, which was a three-fold increase compared with the carbon-free coated material Na2FePO4F (40 mA h g−1). The coulomb efficiency of Na2FePO4F@C cathode material remained above 97.8% after 30 cycles at 0.1 C. This work applied biomass carbon materials to hybrid ion batteries, offering more possibilities for the development of sodium-based fluorophosphate materials for lithium-ion batteries coated with low-cost biomass-based carbon materials.