„babeș-bolyai”,cluj-napoca facultatea de chimie și inginerie

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UNIVERSITATEA „BABEȘ-BOLYAI”,CLUJ-NAPOCA FACULTATEA DE CHIMIE ȘI INGINERIE CHIMICĂ ȘCOALA DOCTORALA DE INGINERIE CHIMICĂ Scientific Advisor Prof. dr. eng.…
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UNIVERSITATEA „BABEȘ-BOLYAI”,CLUJ-NAPOCA FACULTATEA DE CHIMIE ȘI INGINERIE CHIMICĂ ȘCOALA DOCTORALA DE INGINERIE CHIMICĂ Scientific Advisor Prof. dr. eng. Petru ILEA PhD Student Eng. Alexandru-Horaţiu MARINCAŞ 1 1. 2. 3. 4. 5. Synthesis of LiMyMn2-yO4 (M=Ti, Ni, Ge, Fe, Zn), for lithium-ion batteries cathode. Physical and electrochemical characterization of synthesized oxides Correlation between synthesis method, structure and electrochemical properties synthesized oxides Develop of novel aqueos electrolytes for Aqueos Rechargeable Li-ion batteries (ARLB) Synthesis and electrochemical characterization of electrocatalysts used in oxygen reduction reaction (ORR) 2 Energy density(Wh/kg) vs specific density (Wh/l) for some batteries B. Scrosati, K.M. Abraham, Walter van Schalkwijk, J. Hassoun, Lithium Batteries, Advanced Technologies and Applications, Wiley, 2013 3 Energy density, voltage, specific capacity for active cathode materials B. Scrosati, K.M. Abraham, Walter van Schalkwijk, J. Hassoun, Lithium Batteries, Advanced Technologies and Applications, Wiley, 2013 4 B. Scrosati, K.M. Abraham, Walter van Schalkwijk, J. Hassoun, Lithium Batteries, Advanced Technologies and Applications, Wiley, 2013 5 Material Abbreviation Uses LiCoO2 (60% Co) LCO LiMn2O4 LiFePO4 LiNiMnCoO2 (10-20% Co) LiNiCoAlO2 (9% Co) Li4Ti5O12 LMO LFP NMC -cellphone -laptops -digital camera -power tools -medical devices NCA -electric propulsion systems LTO 6 7 G.A. Nazri, G. Pistoia, Lithium Batteries-Science and Technology, Springer, 2003 -Pechini process; -chemical coprecipitation; -sol-gel method; -solid state reactions; -hydrothermal reactions; -inverse microemulsions method. 8 Advantages Disadvantages -low fabrication cost -oxygen vacancies formation during slow dissolution of manganese in electrolyte -enough manganese sources -Jahn-Teller structural distorsion -easy fabrication process -envirommental friendly 9 a) b) Figura 4 - LiMn2O4 (a) , respectively aLiCoO2 (b) performance http://batteryuniversity.com/learn/article/explaining_lithium_ion_chemistries 10 Alexandru-Horaţiu Marincaş, Firuţa Goga, Sorin-Aurel Dorneanu, Petru Ilea, Sol-gel synthesis of nanosized LiMn2O4 particles and their electrochemical characterization in aqueous electrolyte, Romanian Chemical Engineering Society Bulletin, under review 11 12
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