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Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries

Currently, efforts to address the energy needs of large-scale power applications have expedited the development of sodium-ion (Na-ion) batteries. Transition-metal oxides, including Mn2O3, are promising for low-cost, eco-friendly energy storage/conversion. Due to its high theoretical capacity, Mn2O3...

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Main Authors: Yusoff, Nor Fazila Mahamad, Idris, Nurul Hayati, Din, Muhamad Faiz Md, Majid, Siti Rohana, Harun, Noor Aniza, Noerochim, Lukman
Format: Article
Published: MDPI 2023
Subjects:
QC Physics
QD Chemistry
Online Access:http://eprints.um.edu.my/38752/
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spelling my.um.eprints.387522023-11-22T06:24:40Z http://eprints.um.edu.my/38752/ Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries Yusoff, Nor Fazila Mahamad Idris, Nurul Hayati Din, Muhamad Faiz Md Majid, Siti Rohana Harun, Noor Aniza Noerochim, Lukman QC Physics QD Chemistry Currently, efforts to address the energy needs of large-scale power applications have expedited the development of sodium-ion (Na-ion) batteries. Transition-metal oxides, including Mn2O3, are promising for low-cost, eco-friendly energy storage/conversion. Due to its high theoretical capacity, Mn2O3 is worth exploring as an anode material for Na-ion batteries; however, its actual application is constrained by low electrical conductivity and capacity fading. Herein, we attempt to overcome the problems related to Mn2O3 with heteroatom-doped reduced graphene oxide (rGO) aerogels synthesised via the hydrothermal method with a subsequent freeze-drying process. The cubic Mn2O3 particles with an average size of 0.5-1.5 mu m are distributed to both sides of heteroatom-doped rGO aerogels layers. Results indicate that heteroatom-doped rGO aerogels may serve as an efficient ion transport channel for electrolyte ion transport in Mn2O3. After 100 cycles, the electrodes retained their capacities of 242, 325, and 277 mAh g(-1), for Mn2O3/rGO, Mn2O3/nitrogen-rGO, and Mn2O3/nitrogen, sulphur-rGO aerogels, respectively. Doping Mn2O3 with heteroatom-doped rGO aerogels increased its electrical conductivity and buffered volume change during charge/discharge, resulting in high capacity and stable cycling performance. The synergistic effects of heteroatom doping and the three-dimensional porous structure network of rGO aerogels are responsible for their excellent electrochemical performances. MDPI 2023-02 Article PeerReviewed Yusoff, Nor Fazila Mahamad and Idris, Nurul Hayati and Din, Muhamad Faiz Md and Majid, Siti Rohana and Harun, Noor Aniza and Noerochim, Lukman (2023) Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries. Nanomaterials, 13 (4). ISSN 2079-4991, DOI https://doi.org/10.3390/nano13040732 <https://doi.org/10.3390/nano13040732>. 10.3390/nano13040732
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QC Physics
QD Chemistry
spellingShingle QC Physics
QD Chemistry
Yusoff, Nor Fazila Mahamad
Idris, Nurul Hayati
Din, Muhamad Faiz Md
Majid, Siti Rohana
Harun, Noor Aniza
Noerochim, Lukman
Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries
description Currently, efforts to address the energy needs of large-scale power applications have expedited the development of sodium-ion (Na-ion) batteries. Transition-metal oxides, including Mn2O3, are promising for low-cost, eco-friendly energy storage/conversion. Due to its high theoretical capacity, Mn2O3 is worth exploring as an anode material for Na-ion batteries; however, its actual application is constrained by low electrical conductivity and capacity fading. Herein, we attempt to overcome the problems related to Mn2O3 with heteroatom-doped reduced graphene oxide (rGO) aerogels synthesised via the hydrothermal method with a subsequent freeze-drying process. The cubic Mn2O3 particles with an average size of 0.5-1.5 mu m are distributed to both sides of heteroatom-doped rGO aerogels layers. Results indicate that heteroatom-doped rGO aerogels may serve as an efficient ion transport channel for electrolyte ion transport in Mn2O3. After 100 cycles, the electrodes retained their capacities of 242, 325, and 277 mAh g(-1), for Mn2O3/rGO, Mn2O3/nitrogen-rGO, and Mn2O3/nitrogen, sulphur-rGO aerogels, respectively. Doping Mn2O3 with heteroatom-doped rGO aerogels increased its electrical conductivity and buffered volume change during charge/discharge, resulting in high capacity and stable cycling performance. The synergistic effects of heteroatom doping and the three-dimensional porous structure network of rGO aerogels are responsible for their excellent electrochemical performances.
format Article
author Yusoff, Nor Fazila Mahamad
Idris, Nurul Hayati
Din, Muhamad Faiz Md
Majid, Siti Rohana
Harun, Noor Aniza
Noerochim, Lukman
author_facet Yusoff, Nor Fazila Mahamad
Idris, Nurul Hayati
Din, Muhamad Faiz Md
Majid, Siti Rohana
Harun, Noor Aniza
Noerochim, Lukman
author_sort Yusoff, Nor Fazila Mahamad
title Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries
title_short Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries
title_full Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries
title_fullStr Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries
title_full_unstemmed Coupling of Mn2O3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries
title_sort coupling of mn2o3 with heteroatom-doped reduced graphene oxide aerogels with improved electrochemical performances for sodium-ion batteries
publisher MDPI
publishDate 2023
url http://eprints.um.edu.my/38752/
_version_ 1783876672624263168
score 13.211869

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