Cover Image

Hydrothermally etched MXene-based nanocomposite electrode for supercapattery

The requirements of energy storage devices have only been ever-increasing, from greater charge storage to faster charging to boost the energy and power densities. However, existing lithium-ion batteries are limited by their power density due to long charging duration while supercapacitors have limit...

Full description

Saved in:
Bibliographic Details
Main Authors: Wee Shen Loong N., Liew J., Pershaanaa M., Farhana N.K., Prasankumar T., Bashir S., Ramesh K., Ramesh S.
Other Authors: 59351154100
Format: Article
Published: Elsevier B.V. 2025
Subjects:
Carbon electrodes
Energy density
Graphene composites
Graphenes
High-power-density
Mxene
Mxene/graphene composite
Power densities
Pseudocapacitive
Pseudocapacitive electrode
Supercapattery
Electrolytes
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.uniten.dspace-36223
record_format dspace
spelling my.uniten.dspace-362232025-03-03T15:41:37Z Hydrothermally etched MXene-based nanocomposite electrode for supercapattery Wee Shen Loong N. Liew J. Pershaanaa M. Farhana N.K. Prasankumar T. Bashir S. Ramesh K. Ramesh S. 59351154100 58771904600 57223119720 44361049200 57191483300 56978832100 57220754709 7103211834 Carbon electrodes Energy density Graphene composites Graphenes High-power-density Mxene Mxene/graphene composite Power densities Pseudocapacitive Pseudocapacitive electrode Supercapattery Electrolytes The requirements of energy storage devices have only been ever-increasing, from greater charge storage to faster charging to boost the energy and power densities. However, existing lithium-ion batteries are limited by their power density due to long charging duration while supercapacitors have limited energy density and higher power density. A supercapattery, a device that possesses the qualities of a battery and a supercapacitor, is being developed to achieve higher energy and power densities in a single device. MXenes are a group of promising materials to be used as electrodes in supercapatteries for their exceptional pseudocapacitive properties. Herein, Ti3C2Tx MXene was synthesized using hydrothermal-assisted etching with various in situ HF etchants, and the effects of using different cationic intercalants were explored. This approach boosts the etching efficiency of weaker etchants, ensuring the proper exfoliation of MXene precursors whilst maintaining the structural integrity of MXenes and removing the need to delaminate and intercalate them post-synthesis. Combined with graphene by sonication, the resulting wrappage of graphene around MXene could increase the electrical conductivity, promote the electrode electrolyte interaction, and improve the electrochemical performance of MXene-based electrode signification and demonstrating synergistic effects. A supercapattery was fabricated by pairing activated carbon as the capacitive electrode and optimized MXene-graphene composite (MG-21) as the pseudocapacitive electrode. The device achieved a specific capacitance of 662.02F/g and an energy density of 20.58 Wh kg?1 at 3 A/g and exhibited an excellent energy and power density of 23.02 Wh kg?1 at 0.5 A/g and 13.1 kW kg?1 at 10 A/g, respectively. ? 2024 Elsevier B.V. Final 2025-03-03T07:41:37Z 2025-03-03T07:41:37Z 2024 Article 10.1016/j.jelechem.2024.118678 2-s2.0-85205439999 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85205439999&doi=10.1016%2fj.jelechem.2024.118678&partnerID=40&md5=8d86c6d6cd1db436d668e00865c9f625 https://irepository.uniten.edu.my/handle/123456789/36223 973 118678 Elsevier B.V. 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/
topic Carbon electrodes
Energy density
Graphene composites
Graphenes
High-power-density
Mxene
Mxene/graphene composite
Power densities
Pseudocapacitive
Pseudocapacitive electrode
Supercapattery
Electrolytes
spellingShingle Carbon electrodes
Energy density
Graphene composites
Graphenes
High-power-density
Mxene
Mxene/graphene composite
Power densities
Pseudocapacitive
Pseudocapacitive electrode
Supercapattery
Electrolytes
Wee Shen Loong N.
Liew J.
Pershaanaa M.
Farhana N.K.
Prasankumar T.
Bashir S.
Ramesh K.
Ramesh S.
Hydrothermally etched MXene-based nanocomposite electrode for supercapattery
description The requirements of energy storage devices have only been ever-increasing, from greater charge storage to faster charging to boost the energy and power densities. However, existing lithium-ion batteries are limited by their power density due to long charging duration while supercapacitors have limited energy density and higher power density. A supercapattery, a device that possesses the qualities of a battery and a supercapacitor, is being developed to achieve higher energy and power densities in a single device. MXenes are a group of promising materials to be used as electrodes in supercapatteries for their exceptional pseudocapacitive properties. Herein, Ti3C2Tx MXene was synthesized using hydrothermal-assisted etching with various in situ HF etchants, and the effects of using different cationic intercalants were explored. This approach boosts the etching efficiency of weaker etchants, ensuring the proper exfoliation of MXene precursors whilst maintaining the structural integrity of MXenes and removing the need to delaminate and intercalate them post-synthesis. Combined with graphene by sonication, the resulting wrappage of graphene around MXene could increase the electrical conductivity, promote the electrode electrolyte interaction, and improve the electrochemical performance of MXene-based electrode signification and demonstrating synergistic effects. A supercapattery was fabricated by pairing activated carbon as the capacitive electrode and optimized MXene-graphene composite (MG-21) as the pseudocapacitive electrode. The device achieved a specific capacitance of 662.02F/g and an energy density of 20.58 Wh kg?1 at 3 A/g and exhibited an excellent energy and power density of 23.02 Wh kg?1 at 0.5 A/g and 13.1 kW kg?1 at 10 A/g, respectively. ? 2024 Elsevier B.V.
author2 59351154100
author_facet 59351154100
Wee Shen Loong N.
Liew J.
Pershaanaa M.
Farhana N.K.
Prasankumar T.
Bashir S.
Ramesh K.
Ramesh S.
format Article
author Wee Shen Loong N.
Liew J.
Pershaanaa M.
Farhana N.K.
Prasankumar T.
Bashir S.
Ramesh K.
Ramesh S.
author_sort Wee Shen Loong N.
title Hydrothermally etched MXene-based nanocomposite electrode for supercapattery
title_short Hydrothermally etched MXene-based nanocomposite electrode for supercapattery
title_full Hydrothermally etched MXene-based nanocomposite electrode for supercapattery
title_fullStr Hydrothermally etched MXene-based nanocomposite electrode for supercapattery
title_full_unstemmed Hydrothermally etched MXene-based nanocomposite electrode for supercapattery
title_sort hydrothermally etched mxene-based nanocomposite electrode for supercapattery
publisher Elsevier B.V.
publishDate 2025
_version_ 1825816218501644288
score 13.244367

Similar Items