حنانه كوزه گر

Optimizing energy storage equipment, including batteries, is the key to reducing environmental problems and energy crises. Among the various types of commercially available batteries, lithium-ion batteries have a great opportunity due to the availability and non-toxicity of lithium as well as the observance of environmental principles. Nowadays, The most popular anode material used in lithium-ion batteries is graphite, which does not meet the needs of today's battery industry due to its low theoretical capacity and high probability of dendrite forming, resulting in short circuits and the risk of flare-ups. In the present study,CuCo2O4 spinel structured material, was synthesized using the solution combustion method, and its performance as the anode of a lithium-ion battery was investigated. ×-ray diffraction, BET, Raman spectroscopy and scanning electron microscopy tests were used to eva‎luate the synthesized samples. The anodic performance of the samples was studied by cyclability, rateability, electrochemical impedance spectra, and cyclic voltammetry. In order to find the optimal parameters of synthesis, the effect of fuel type was investigated using Three different fuels (urea, glycine, L-lysine). Eventually, after pointing out the optimal sample, microstructural changes, and electrochemical characteristics of its full cell were observed after a 100 cycles and a mechanism for its capacity trend was proposed. The results of this research show that altering the type of fuel cause significant structural and microstructural differences. In addition, the capacity of all samples after a gradual decline, reached below the capacity of the commercial anode, namely graphite with a capacity of 372 mAh/g after one hundred cycles. The best cyclability belongs to one of the samples synthesing With using L-lysing whitch its capacity reached 120 mAh/g after one hundred cycles. Moreover, to improve the electrochemical properties and cyclic stability, the best sample was synthesized with graphite carbon nitride which reached a capacity of 224 mAh/g after 100 cycles, which is more than the capacity of the composite sample.

باتري‌ ليتيوم-يوني‌ , سنتز احتراق محلولي‌ , مواد آندي‌ , كبالتيت‌ مس‌ , عملكردچرخه‌اي , گرافيت كربن نيتريد

Lithium-Ion Battery , Solution Combustion Synthesis , CopperCobaltite , Cyclic Performance , graphite carbon nitride

hannaneh kouzehgar

Dr,somaye Alamolhoda