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Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries

The purpose of this work is to study the effect of agar binder in lithium vanadium oxide (LiV3O8) anode on the structural, morphology and electrochemical performance of the electrode. The anode electrode is fabricated by adding the active material (LiV3O8), electrical conductor (graphene) and binder...

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Main Author: Soo, Kuan Lim
Format: Monograph
Language:English
Published: Universiti Sains Malaysia 2017
Subjects:
T Technology
TA401-492 Materials of engineering and construction. Mechanics of materials
Online Access:http://eprints.usm.my/52335/1/Characterization%20Of%20Lithium%20Vanadium%20Oxide%20Anode%20With%20Agar%20Binder%20In%20Aqueous%20Rechargeable%20Lithium%20Ion%20Batteries_Soo%20Kuan%20Lim_B1_2017.pdf
http://eprints.usm.my/52335/
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spelling my.usm.eprints.52335 http://eprints.usm.my/52335/ Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries Soo, Kuan Lim T Technology TA401-492 Materials of engineering and construction. Mechanics of materials The purpose of this work is to study the effect of agar binder in lithium vanadium oxide (LiV3O8) anode on the structural, morphology and electrochemical performance of the electrode. The anode electrode is fabricated by adding the active material (LiV3O8), electrical conductor (graphene) and binder (agar) in a specified ratio with percentage of agar binder being varied. The working electrode is compacted and allowed to be characterized as a half-cell setting. The structural analysis indicate that the agar binder has successfully banded the phases of LiV3O8 and graphene together prior to cycling. The morphological analysis proven that the agar binder is able to prevent delamination of the active mass. The electrochemical performances further consolidate the findings where the characterization is done in 5 M LiNO3 electrolyte. From cyclic voltammetry findings, with an optimized scan rate of 0.1 Mv s-1, the best performing electrode is one with 8 wt% agar binder. The anode half-cell also had high reversibility and high coefficient diffusion of lithium ions at 1.315 x 10-6 and 3.046 x 10-6 cm2 s-1 for anodic and cathodic peaks respectively. LiV3O8 anode demonstrated initial specific discharge capacity of 48 mAh g-1 under optimized scan rate 0.1 mV s-1. A good cyclic performance with 45 mAh g-1 (capacity retention of 93.75%) at the 10th cycle. The capacity fading upon cycling was supported by increasing charge transfer resistance from the impedance analysis. However, cracks observed on the surface of LiV3O8 anode upon cycling in morphological analysis indicated anisotropic volume change in the lattice parameter c upon intercalation/de-intercalation of lithium ions. Universiti Sains Malaysia 2017-06-01 Monograph NonPeerReviewed application/pdf en http://eprints.usm.my/52335/1/Characterization%20Of%20Lithium%20Vanadium%20Oxide%20Anode%20With%20Agar%20Binder%20In%20Aqueous%20Rechargeable%20Lithium%20Ion%20Batteries_Soo%20Kuan%20Lim_B1_2017.pdf Soo, Kuan Lim (2017) Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries. Project Report. Universiti Sains Malaysia, Pusat Pengajian Kejuruteraan Bahan Sumber Mineral. (Submitted)
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic T Technology
TA401-492 Materials of engineering and construction. Mechanics of materials
spellingShingle T Technology
TA401-492 Materials of engineering and construction. Mechanics of materials
Soo, Kuan Lim
Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries
description The purpose of this work is to study the effect of agar binder in lithium vanadium oxide (LiV3O8) anode on the structural, morphology and electrochemical performance of the electrode. The anode electrode is fabricated by adding the active material (LiV3O8), electrical conductor (graphene) and binder (agar) in a specified ratio with percentage of agar binder being varied. The working electrode is compacted and allowed to be characterized as a half-cell setting. The structural analysis indicate that the agar binder has successfully banded the phases of LiV3O8 and graphene together prior to cycling. The morphological analysis proven that the agar binder is able to prevent delamination of the active mass. The electrochemical performances further consolidate the findings where the characterization is done in 5 M LiNO3 electrolyte. From cyclic voltammetry findings, with an optimized scan rate of 0.1 Mv s-1, the best performing electrode is one with 8 wt% agar binder. The anode half-cell also had high reversibility and high coefficient diffusion of lithium ions at 1.315 x 10-6 and 3.046 x 10-6 cm2 s-1 for anodic and cathodic peaks respectively. LiV3O8 anode demonstrated initial specific discharge capacity of 48 mAh g-1 under optimized scan rate 0.1 mV s-1. A good cyclic performance with 45 mAh g-1 (capacity retention of 93.75%) at the 10th cycle. The capacity fading upon cycling was supported by increasing charge transfer resistance from the impedance analysis. However, cracks observed on the surface of LiV3O8 anode upon cycling in morphological analysis indicated anisotropic volume change in the lattice parameter c upon intercalation/de-intercalation of lithium ions.
format Monograph
author Soo, Kuan Lim
author_facet Soo, Kuan Lim
author_sort Soo, Kuan Lim
title Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries
title_short Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries
title_full Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries
title_fullStr Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries
title_full_unstemmed Characterization Of Lithium Vanadium Oxide Anode With Agar Binder In Aqueous Rechargeable Lithium Ion Batteries
title_sort characterization of lithium vanadium oxide anode with agar binder in aqueous rechargeable lithium ion batteries
publisher Universiti Sains Malaysia
publishDate 2017
url http://eprints.usm.my/52335/1/Characterization%20Of%20Lithium%20Vanadium%20Oxide%20Anode%20With%20Agar%20Binder%20In%20Aqueous%20Rechargeable%20Lithium%20Ion%20Batteries_Soo%20Kuan%20Lim_B1_2017.pdf
http://eprints.usm.my/52335/
_version_ 1731226352767467520
score 13.244367

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