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Effect of Combustion Fuel on Structure and Morphology of Ni-rich LiNi0.85Co0.15O2 Cathode Material via Combustion Method
Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), Shah Alam, Selangor, Malaysia
*Email Address : muhdfir@uitm.edu.my
Abstract : Synthesis process plays an important character in determining the phase, morphology, crystallinity and electrochemical performance of the cathode materials. In this work, the synthesis of Ni-rich cathode material, LiNi0.85Co0.15O2 was done using combustion method. Different fuels which are urea and glycine were used to study the effect on the phase and morphology of the materials. The final products of LiNi0.85Co0.15O2 synthesized using glycine and urea were denoted as LNG and LNU, respectively. Based on the XRD results, all materials showed a pure, single phase and isostructural with hexagonal α-NaFeO2. LNU material show good cation ordering with Reference Intensity Ratio (RIR) value of 1.26. Meanwhile, FESEM results revealed that all materials have morphology of polyhedral like shape and well-crystallized particles with smooth surfaces. LNU material display larger crystallite size compared to the LNG material. As a conclusion, using different fuels during synthesis process will effect the structural and the morphology of materials.
Keywords : Lithium-ion batteries, Cathode, Layered, Combustion, Ni-rich