High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode

Activated carbon; Anodes; Cathodes; Charge transfer; Crystallinity; Electric discharges; Graphene; Hybrid materials; Life cycle; Nanocrystals; Oxide minerals; Supercapacitor; Titanium dioxide; Charge transfer resistance; Charge-discharge cycle; Electrochemical performance; High specific capacity; Hy...

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Main Authors: Heng I., Low F.W., Lai C.W., Juan J.C., Amin N., Tiong S.K.
Other Authors: 57204918003
Format: Article
Published: Elsevier Ltd 2023
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Institution: Universiti Tenaga Nasional
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spelling my.uniten.dspace-245032023-05-29T15:24:02Z High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode Heng I. Low F.W. Lai C.W. Juan J.C. Amin N. Tiong S.K. 57204918003 56513524700 54879860000 56068042700 7102424614 15128307800 Activated carbon; Anodes; Cathodes; Charge transfer; Crystallinity; Electric discharges; Graphene; Hybrid materials; Life cycle; Nanocrystals; Oxide minerals; Supercapacitor; Titanium dioxide; Charge transfer resistance; Charge-discharge cycle; Electrochemical performance; High specific capacity; Hydrothermal methods; Hydrothermal techniques; rGO/TiO2; Supercapattery; Reduced Graphene Oxide A hybrid material of reduced graphene oxide/titanium dioxide (rGO/TiO2)was successfully synthesized by facile hydrothermal technique. A different amount of GO ratios at 5%, 10%, 20%, and 30% were loaded with TiO2. It is a well-known fact that porous structure and crystallinity of resultant rGO/TiO2 play a crucial role in synergistic effect which facilitate electron transfer movement and reduce the volume changes during a charge-discharge cycle process. Based on the results obtained, an optimum of 10 wt % GO loading with TiO2 nanocrystals revealed that electrochemical performance achieved the highest specific capacity of 116.70 mAh/g with 0.2 A g?1 among samples. This result inferred that high efficiency of ion diffusion was obtained with low charge transfer resistance between TiO2 nanocrystals and rGO. The supercapattery was assembled in a configuration of optimized 10% rGO/TiO2 nanocomposites as anode while activated carbon as cathode. The result obtained a superior energy density of 54.37 Wh kg?1 at power density of 420.48 W kg?1. Additionally, the specific capacity still remained at 92% for 3000 charging-discharging cycles under a current density of 1 A g?1; hence, good life cycle stability, high specific capacity and low charge transfer resistance of rGO/TiO2 nanocomposites electrode suggested that the prepared materials was a promising anode material for supercapattery application. � 2019 Elsevier B.V. Final 2023-05-29T07:24:02Z 2023-05-29T07:24:02Z 2019 Article 10.1016/j.jallcom.2019.04.347 2-s2.0-85065389462 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065389462&doi=10.1016%2fj.jallcom.2019.04.347&partnerID=40&md5=2d3c013130d21f9e39deff37aa38aeb4 https://irepository.uniten.edu.my/handle/123456789/24503 796 13 24 Elsevier Ltd Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Activated carbon; Anodes; Cathodes; Charge transfer; Crystallinity; Electric discharges; Graphene; Hybrid materials; Life cycle; Nanocrystals; Oxide minerals; Supercapacitor; Titanium dioxide; Charge transfer resistance; Charge-discharge cycle; Electrochemical performance; High specific capacity; Hydrothermal methods; Hydrothermal techniques; rGO/TiO2; Supercapattery; Reduced Graphene Oxide
author2 57204918003
author_facet 57204918003
Heng I.
Low F.W.
Lai C.W.
Juan J.C.
Amin N.
Tiong S.K.
format Article
author Heng I.
Low F.W.
Lai C.W.
Juan J.C.
Amin N.
Tiong S.K.
spellingShingle Heng I.
Low F.W.
Lai C.W.
Juan J.C.
Amin N.
Tiong S.K.
High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode
author_sort Heng I.
title High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode
title_short High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode
title_full High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode
title_fullStr High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode
title_full_unstemmed High performance supercapattery with rGO/TiO2 nanocomposites anode and activated carbon cathode
title_sort high performance supercapattery with rgo/tio2 nanocomposites anode and activated carbon cathode
publisher Elsevier Ltd
publishDate 2023
_version_ 1806426658187509760