VANADIUM BASED LITHIUM NICKEL ALUMINIUMOXIDE SYSTEM WITH GOOD PERFORMANCE IN LITHIUM-ION BATTERIES

Hafizah Rajaa Shaari, V. Sethuprakhash, Wan Jeffry Basirun
2016 Jurnal Teknologi  
LiNixV1-x-y AlyO2, are cathode materials for lithium ion batteries which have been synthesized via carbon combustion method. Lithium nickel oxide derivatives are considered by the battery manufacturers to be very promising for application in 4V lithium-ion batteries. The objective of this study is, to successfully synthesize a lithium nickel vanadium aluminum oxide cathode which can show intercalation and de-intercalation process during cyclic voltammetry testing and a discharge capacity of
more » ... rge capacity of above 50mAh/g. LiNi1-x-yVxAlyO2were synthesized by the carbon combustion method using acetylene carbon black as a binder. X-Ray Diffraction (XRD) reveals extra peaks related to Vanadium metal when it is added into LiNiAlO2. The intensity peak of the spectrum increased when the V content is increased. Scanning Electron Microscopy (SEM) shows the grain particles become non-spherical and flakes when more vanadium substituted for nickel in the sample. Fourier Transform Infrared (FTIR) spectroscopy analysis and Energy dispersive analysis of X-Ray (EDAX) confirmed that NO 3-impurities are not present and composition in samples Galvanostatic charge/discharge data obtained illustrates a discharge capacity of 80.57mAh/g LiNi0.8V0.1Al0.1O2 and an average of 80.55mAh/g for 10 cycles whereas LiNi0.6V0.3Al 0.1O2 highest discharge capacity is 80.52mAh/g and also an average of 80.53mAh/g for 10 cycles. Voltammographs of the LiNi0.8V0.1Al0.1O2, LiNi0.7V0.2Al0.1O2 and LiNi0.6V0.3Al0.1O2 materials showed good oxidation and reduction loop at 0.05mV/s and 1 mV/s scan rate. Abstrak LiNixV1-x-y AlyO2, adalah bahan katod bagi baterilitium ion yang telah disintesis melalui kaedah pembakaran karbon. Litium nikel oksida derivative menjadi pilihan oleh kebanyakan pengeluar bateri bagi aplikasi penggunaan 4 V bateri litium ion. Objektif kajian ini adalah, untuk mensintesis bahan katod litium nikel vanadium aluminium oksida yang boleh menunjukkan proses inter kalasidan de-inter kalasi semasa ujian cyclic voltam metri dan menghasilkan nilai kapasiti nyahcas 50mAh / g keatas. LiNixV1-x-yAlyO2 telah disintesis oleh kaedah pembakaran karbon menggunakana setilena karbon hitam sebagai pemangkin. Pembelauan sinaran-X (XRD) menunjukkan pertambahan puncak spektrum yang berkaitan dengan logam vanadium apabila ia ditambah ke dalam LiNiAlO2. Puncak keamatan spectrum semakin meningkat apabila kandungan vanadium bertambah. Scanning Electron Microscopy (SEM) menunjukkan zarah bijian menjadi tidak sfera dan berkepingan apabila kandungan vanadium meningkat digantikan dengan nikel di dalam sampel. Analisis Fourier Transform Infrared Spectroscopy (FTIR) dan Energy dispersive X-Ray (EDAX) mengesahkan bahawa bendasing NO3-wujud dalam sample dan komposisi bahan dalam sampel. Data galvano static diperolehi menunjukkan kapasiti nyahcas LiNi0.8V0.1Al0.1O2 adalah 80.57mAh/ g dan nilai purata adalah 80.55mAh / g selama 10 kitaran manakala nilai kapasiti nyah cas tertinggi adalah 80.52 mAh / g dan juga purata 80.53mAh / g selama 10 kitaran adalah dari bahan LiNi0.6V0.3Al0.1O2. Data Voltammographs daripada bahan LiNi0.8V0.1Al0.1O2, LiNi0.7V0.2Al0.1O2dan LiNi0.6V0.3Al0.1O2 menunjukkan gelung pengoksidaan dan pengurangan yang baik pada kadar imbasan 0.05mV/ s dan 1 mV /s.
doi:10.11113/jt.v78.8844 fatcat:awjvgmirvza6patom3gckyg6na