Morphological characterization of LiFePO4/C composite cathode materials synthesized via a carboxylic acid route

摘要: Abstract A new type of LiFePO4/C composite surrounded by a web containing both amorphous and crystalline carbon phases was synthesized incorporating malonic acid as source using high temperature solid-state method. SEM, TEM/SAED/EDS HRTEM were used to analyze surface morphology confirmed for the first time that present in composites. The effective enhancing electrochemical properties such capacity rate capability, because its active component consists nanometer-sized particles pores with wide range sizes. An EDS elemental map showed uniformly distributed on particles. TEM/EDS results clearly show dark region is LiFePO4 trace gray only. To evaluate materials’ properties, galvanostatic cycling conductivity measurements performed. best cell performance delivered material coated 60 wt.% acid, which cycle discharge 149 mAh g−1 at C/5 sustained 222 cycles 80% retention. When carboxylic produce LiFePO4, overall increased from 10−5 10−4 S cm−1, since particle growth prevented during final sintering process.