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Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries

Owing to their high theoretical capacity, transition-metal oxides have received a considerable amount of attention as potential anode materials in sodium-ion (Na-ion) batteries. Among them, Mn3O4 has gained interest due to the low cost of raw materials and the environmental compatibility. However, d...

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Main Authors: Yusoff, Nor Fazila Mahamad, Idris, Nurul Hayati, Din, Muhamad Faiz Md, Majid, Siti Rohana, Harun, Noor Aniza
Format: Article
Published: MDPI 2022
Subjects:
QC Physics
QD Chemistry
Online Access:http://eprints.um.edu.my/40877/
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spelling my.um.eprints.408772023-09-26T01:46:53Z http://eprints.um.edu.my/40877/ Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries Yusoff, Nor Fazila Mahamad Idris, Nurul Hayati Din, Muhamad Faiz Md Majid, Siti Rohana Harun, Noor Aniza QC Physics QD Chemistry Owing to their high theoretical capacity, transition-metal oxides have received a considerable amount of attention as potential anode materials in sodium-ion (Na-ion) batteries. Among them, Mn3O4 has gained interest due to the low cost of raw materials and the environmental compatibility. However, during the insertion/de-insertion process, Mn3O4 suffers from particle aggregation, poor conductivity, and low-rate capability, which, in turn, limits its practical application. To overcome these obstacles, we have successfully prepared Mn3O4 nanoparticles distributed on the nitrogen (N)-doped and nitrogen, sulphur (N,S)-doped reduced graphene oxide (rGO) aerogels, respectively. The highly crystalline Mn3O4 nanoparticles, with an average size of 15-20 nm, are homogeneously dispersed on both sides of the N-rGO and N,S-rGO aerogels. The results indicate that the N-rGO and N,S-rGO aerogels could provide an efficient ion transport channel for electrolyte ion stability in the Mn3O4 electrode. The Mn3O4/N- and Mn3O4/N,S-doped rGO aerogels exhibit outstanding electrochemical performances, with a reversible specific capacity of 374 and 281 mAh g(-1), respectively, after 100 cycles, with Coulombic efficiency of almost 99%. The interconnected structure of heteroatom-doped rGO with Mn3O4 nanoparticles is believed to facilitate fast ion diffusion and electron transfer by lowering the energy barrier, which favours the complete utilisation of the active material and improvement of the structure's stability. MDPI 2022-10 Article PeerReviewed Yusoff, Nor Fazila Mahamad and Idris, Nurul Hayati and Din, Muhamad Faiz Md and Majid, Siti Rohana and Harun, Noor Aniza (2022) Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries. Nanomaterials, 12 (20). ISSN 2079-4991, DOI https://doi.org/10.3390/nano12203569 <https://doi.org/10.3390/nano12203569>. 10.3390/nano12203569
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
Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries
description Owing to their high theoretical capacity, transition-metal oxides have received a considerable amount of attention as potential anode materials in sodium-ion (Na-ion) batteries. Among them, Mn3O4 has gained interest due to the low cost of raw materials and the environmental compatibility. However, during the insertion/de-insertion process, Mn3O4 suffers from particle aggregation, poor conductivity, and low-rate capability, which, in turn, limits its practical application. To overcome these obstacles, we have successfully prepared Mn3O4 nanoparticles distributed on the nitrogen (N)-doped and nitrogen, sulphur (N,S)-doped reduced graphene oxide (rGO) aerogels, respectively. The highly crystalline Mn3O4 nanoparticles, with an average size of 15-20 nm, are homogeneously dispersed on both sides of the N-rGO and N,S-rGO aerogels. The results indicate that the N-rGO and N,S-rGO aerogels could provide an efficient ion transport channel for electrolyte ion stability in the Mn3O4 electrode. The Mn3O4/N- and Mn3O4/N,S-doped rGO aerogels exhibit outstanding electrochemical performances, with a reversible specific capacity of 374 and 281 mAh g(-1), respectively, after 100 cycles, with Coulombic efficiency of almost 99%. The interconnected structure of heteroatom-doped rGO with Mn3O4 nanoparticles is believed to facilitate fast ion diffusion and electron transfer by lowering the energy barrier, which favours the complete utilisation of the active material and improvement of the structure's stability.
format Article
author Yusoff, Nor Fazila Mahamad
Idris, Nurul Hayati
Din, Muhamad Faiz Md
Majid, Siti Rohana
Harun, Noor Aniza
author_facet Yusoff, Nor Fazila Mahamad
Idris, Nurul Hayati
Din, Muhamad Faiz Md
Majid, Siti Rohana
Harun, Noor Aniza
author_sort Yusoff, Nor Fazila Mahamad
title Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries
title_short Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries
title_full Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries
title_fullStr Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries
title_full_unstemmed Enhanced electrochemical performances of Mn3o4/Heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries
title_sort enhanced electrochemical performances of mn3o4/heteroatom-doped reduced graphene oxide aerogels as an anode for sodium-ion batteries
publisher MDPI
publishDate 2022
url http://eprints.um.edu.my/40877/
_version_ 1781704537323601920
score 13.211869

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