Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)

The objectives of this study is to synthesize lithium nickel oxide (LiNiO2) systems doped with vanadium (V) and aluminium (Al) which gives a constant and good discharge capacity for several cycles. Due to that, LiNi1-x-yAlyO2 systems were developed using carbon combustion synthesis (CCS) and solid-s...

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Main Author:	Hafizah Rajaa Shaari
Format:	thesis
Language:	eng
Published:	2018
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	https://ir.upsi.edu.my/detailsg.php?det=3814
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spelling	oai:ir.upsi.edu.my:38142020-02-27 Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR) 2018 Hafizah Rajaa Shaari TK Electrical engineering. Electronics Nuclear engineering The objectives of this study is to synthesize lithium nickel oxide (LiNiO2) systems doped with vanadium (V) and aluminium (Al) which gives a constant and good discharge capacity for several cycles. Due to that, LiNi1-x-yAlyO2 systems were developed using carbon combustion synthesis (CCS) and solid-state reaction (SSR) method with different proportions ratio of V and Al which are x = 0.1 mole, and 0.3 mole and y = 0.1 mole. The sintering time used was 18 hours for SSR and five hours for CCS at 900C. The first experiment is to obtain crystalline structure by x-ray diffraction analysis (XRD). The results revealed that the LiNi1-x-yVxAlyO2 are well defined hexagonal crystal system with Rd3m space group. The morphology characterization was done by using scanning electron microscopy (SEM). The SEM image for CCS samples show the presence of hexagonal structures for all the materials and it also was homogeneous. The SEM image of SSR samples showed that the particles distribution were irregular in size and also inhomogeneous when more vanadium substituted in the samples. Energy dispersive of x-ray analysis (EDAX) was done to show the percentage ratio of metals synthesized and elements and it showed the desired result. The existence of impurities NO3 - stretch appear at 1325-1450 cm-1 was confirmed from FTIR analysis. Lastly, electrochemical analysis has been done using cyclic voltammetry and charge/discharge. The cyclic voltammetry curves showed intercalation and deintercalation had occurred during testing for both methods. As conclusion, doping with vanadium and aluminium improves the discharge capacity of LiNi0.8V0.1Al0.1O2 which produced 80.57 mAh/g at the initial cycle and an average of 80.55 mAh/g for 10 cycles. The implication of this study show that doping method can improve the structural and electrochemical of the cathode materials of lithium-ion batteries. 2018 thesis https://ir.upsi.edu.my/detailsg.php?det=3814 https://ir.upsi.edu.my/detailsg.php?det=3814 text eng closedAccess Masters Universiti Pendidikan Sultan Idris Fakulti Teknikal dan Vokasional N/A
institution	Universiti Pendidikan Sultan Idris
collection	UPSI Digital Repository
language	eng
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Hafizah Rajaa Shaari Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)
description	The objectives of this study is to synthesize lithium nickel oxide (LiNiO2) systems doped with vanadium (V) and aluminium (Al) which gives a constant and good discharge capacity for several cycles. Due to that, LiNi1-x-yAlyO2 systems were developed using carbon combustion synthesis (CCS) and solid-state reaction (SSR) method with different proportions ratio of V and Al which are x = 0.1 mole, and 0.3 mole and y = 0.1 mole. The sintering time used was 18 hours for SSR and five hours for CCS at 900C. The first experiment is to obtain crystalline structure by x-ray diffraction analysis (XRD). The results revealed that the LiNi1-x-yVxAlyO2 are well defined hexagonal crystal system with Rd3m space group. The morphology characterization was done by using scanning electron microscopy (SEM). The SEM image for CCS samples show the presence of hexagonal structures for all the materials and it also was homogeneous. The SEM image of SSR samples showed that the particles distribution were irregular in size and also inhomogeneous when more vanadium substituted in the samples. Energy dispersive of x-ray analysis (EDAX) was done to show the percentage ratio of metals synthesized and elements and it showed the desired result. The existence of impurities NO3 - stretch appear at 1325-1450 cm-1 was confirmed from FTIR analysis. Lastly, electrochemical analysis has been done using cyclic voltammetry and charge/discharge. The cyclic voltammetry curves showed intercalation and deintercalation had occurred during testing for both methods. As conclusion, doping with vanadium and aluminium improves the discharge capacity of LiNi0.8V0.1Al0.1O2 which produced 80.57 mAh/g at the initial cycle and an average of 80.55 mAh/g for 10 cycles. The implication of this study show that doping method can improve the structural and electrochemical of the cathode materials of lithium-ion batteries.
format	thesis
qualification_name
qualification_level	Master's degree
author	Hafizah Rajaa Shaari
author_facet	Hafizah Rajaa Shaari
author_sort	Hafizah Rajaa Shaari
title	Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)
title_short	Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)
title_full	Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)
title_fullStr	Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)
title_full_unstemmed	Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)
title_sort	synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (ir)
granting_institution	Universiti Pendidikan Sultan Idris
granting_department	Fakulti Teknikal dan Vokasional
publishDate	2018
url	https://ir.upsi.edu.my/detailsg.php?det=3814
_version_	1747833103609495552

Synthesis of vanadium based lithium nickel aluminium oxide systems for good performance cathode materials of lithium-ion batteries (IR)

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