Optimization of Synthesis Condition for LiFePO₄/C Cathode Material

Abstract

This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text. Common and cheap organic matters (Glucose anhydrous, Citric acid, Vitamin C, Sucrose) were selected for carbon coatings on LiFePO4. The four pre-treatment processes were employed to optimize the carbon coating process, and through solid state-carbothermal reduction synthesis of LiFePO4/C composites. The structure, morphology and electrochemical performance of the material were studied by XRD, SEM and galvanostatic charge-discharge methods. It is observed that the tap density of citric acid coating material can reach 1.44 g/ml. Conductivity increased four orders of magnitude. At room temperature, the initial discharge specific capacity of the materials is as high as 89.6 mAh/g at 5.0 C (corresponding to 850 mA/g). After 30 cycles, the capacity is 83.9 mAh/g and decay only 2.0 %.

Catalytic depolymerization of calcium lignosulfonate to high-value oxygenated aromatic compounds over the efficient Fe2O3-La0.8Sr0.2FeO3

“…According to previous studies, Fe 2 O 3 has acquired much interest because of its low costs, non-toxicity, and superior stability. 17,18 Generally, Fe 2 O 3 can be prepared through low-temperature hydrothermal synthesis method, 19–21 precipitation method, 22 sol–gel method, 23 and microemulsion. 24 However, when Fe 2 O 3 spent is regenerated at high temperature with the air, it cannot avoid the sintering problem, which not only lowers the specific surface area and pore structure of the catalyst, reducing the mass transfer process, but also has a prodigious impact on the stability and cyclic regeneration of the catalyst.…”