Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries

Aqueous rechargeable lithium battery is currently receiving attention due to its lower manufacturing cost and improved safety of energy storage. The cathode material with the selection of the appropriate synthesis parameters is one of the factors that will produce good material properties and simult...

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Main Author:	Aziz, Nur Azilina Abdul
Format:	Thesis
Language:	English
Published:	2018
Subjects:	T Technology
Online Access:	http://eprints.usm.my/47358/1/Synthesis%20And%20Electrochemical%20Properties%20Of%20Licoo2%20Cathode%20With%20Graphite%20Or%20Graphene%20Anode%20For%20Aqueous%20Rechargeable%20Lithium%20Batteries.pdf
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spelling	my-usm-ep.473582021-11-17T03:42:13Z Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries 2018-08-01 Aziz, Nur Azilina Abdul T Technology TA401-492 Materials of engineering and construction. Mechanics of materials Aqueous rechargeable lithium battery is currently receiving attention due to its lower manufacturing cost and improved safety of energy storage. The cathode material with the selection of the appropriate synthesis parameters is one of the factors that will produce good material properties and simultaneously achieve a good electrochemical performance. In this study, effects of stirring times and sonication times were employed on LiCoO2 synthesized via sol-gel method. The results of material characterization between optimum stirring time (30 hours) and optimum of sonication time (120 minutes) showed the sample synthesized via sonication process better than stirring process with good crystallinity and smallest particle size. Morphological analysis showed the particle size distribution located in the range of 0.29-0.43 μm. The cycle behaviour of optimum LiCoO2 synthesized via sonication with graphene as anode exhibited better cycling stability, well-defined redox peaks and a smaller potential difference (0.13 V). The performance of the LiCoO2 batteries showed an outstanding enhancement of specific discharge capacity (122.43 mA h g-1 at 0.5 C) and reversibility in an aqueous electrolyte. The improvement in the electrochemical performance was supported by the impedance analysis. A small difference (0.7 ) in the charge transfer resistance before and after a charge-discharge analysis indicated that the Li+ ions had been well-diffused during the intercalation/de-intercalation process. 2018-08 Thesis http://eprints.usm.my/47358/ http://eprints.usm.my/47358/1/Synthesis%20And%20Electrochemical%20Properties%20Of%20Licoo2%20Cathode%20With%20Graphite%20Or%20Graphene%20Anode%20For%20Aqueous%20Rechargeable%20Lithium%20Batteries.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Aziz, Nur Azilina Abdul Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries
description	Aqueous rechargeable lithium battery is currently receiving attention due to its lower manufacturing cost and improved safety of energy storage. The cathode material with the selection of the appropriate synthesis parameters is one of the factors that will produce good material properties and simultaneously achieve a good electrochemical performance. In this study, effects of stirring times and sonication times were employed on LiCoO2 synthesized via sol-gel method. The results of material characterization between optimum stirring time (30 hours) and optimum of sonication time (120 minutes) showed the sample synthesized via sonication process better than stirring process with good crystallinity and smallest particle size. Morphological analysis showed the particle size distribution located in the range of 0.29-0.43 μm. The cycle behaviour of optimum LiCoO2 synthesized via sonication with graphene as anode exhibited better cycling stability, well-defined redox peaks and a smaller potential difference (0.13 V). The performance of the LiCoO2 batteries showed an outstanding enhancement of specific discharge capacity (122.43 mA h g-1 at 0.5 C) and reversibility in an aqueous electrolyte. The improvement in the electrochemical performance was supported by the impedance analysis. A small difference (0.7 ) in the charge transfer resistance before and after a charge-discharge analysis indicated that the Li+ ions had been well-diffused during the intercalation/de-intercalation process.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Aziz, Nur Azilina Abdul
author_facet	Aziz, Nur Azilina Abdul
author_sort	Aziz, Nur Azilina Abdul
title	Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries
title_short	Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries
title_full	Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries
title_fullStr	Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries
title_full_unstemmed	Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries
title_sort	synthesis and electrochemical properties of licoo2 cathode with graphite or graphene anode for aqueous rechargeable lithium batteries
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2018
url	http://eprints.usm.my/47358/1/Synthesis%20And%20Electrochemical%20Properties%20Of%20Licoo2%20Cathode%20With%20Graphite%20Or%20Graphene%20Anode%20For%20Aqueous%20Rechargeable%20Lithium%20Batteries.pdf
_version_	1747821763794829312

Synthesis And Electrochemical Properties Of Licoo2 Cathode With Graphite Or Graphene Anode For Aqueous Rechargeable Lithium Batteries

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