Electrochemical Performance on the H₃BO₃Treated Soft Carbon modified from PFO as Anode Material

Abstract

C for 2 h). After the prepared soft carbon was ground to a particle size of 25~35 o C, the soft carbon was synthesised by the chemical treatment with boric acid (H 3 BO 3 ). The prepared soft carbon were analysed by XRD, FE-SEM and XPS. Also, the electrochemical performances of soft carbon were investigated by constant current charge/discharge test, cyclic voltammetry and impedance tests in the electrolyte of LiPF 6 dissolved inorganic solvents (EC:DMC=1:1 vol%+VC 3 wt%). The coin cell using soft carbon of 25~35 o C with 3903 soft carbon (H 3 BO 3 /Pitch=3:100 in weight) has better initial capacity and efficiency (330 mAh/g, 82%) than those of other coin cells. Also, it was found that the retention rate capability of 2C/0.1C was 90% after 30 cycles.

Archives of Metallurgy and Materials

“…In recent years, lithium ion batteries have been actively studied for their application as a mid-to-large energy source such as for EVs and energy storage systems (ESS) in conventional small electronic devices. For these uses, cathode active material with high energy density, high voltage, charge/discharge efficiency, high stability, and environmentally friendly materials are required [2,3]. For the cathode active material of lithium ion batteries, LCO (LiCoO 2 ), which has a layered structure with a stable capacity, has mainly been used, but it has limitations such as low capacity, environmental pollution and high cost due to cobalt resource constraints.…”