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Microwave-assisted Synthesis of Greigite Fe3S4 nanosheets wrapped in an rGO Matrix as anode material for Sodium-ion batteries
- Source :
- MATEC Web of Conferences, Vol 358, p 01068 (2022)
- Publication Year :
- 2022
- Publisher :
- EDP Sciences, 2022.
-
Abstract
- Greigite (Fe3S4), which have ferromagnetic in inverse thiospinel (AB2S4), is widely researched to use an adsorbent and biomedical field because non-toxicity and abundant in nature. Iron-based materials are known to have a high theoretical capacity because of their multivalent state including redox pairs, but still suffer from collapse and aggregate during the charge/discharge process. Here, the synthesized Fe3S4 nanosheet structure materials wrapped with reduced graphene oxide (Fe3S4NSs@rGO) were used as an anode electrode material for sodium-ion batteries (SIBs). The nano-sheet structure facilitates ion diffusion through expanded surface area, and rGO can effectively improve electrochemical conductivity and structure stability. As-prepared Fe3S4NSs@rGO were used as a host material to insert Na-ion via a conversion process, and the stabilized structure maintains the high capacity and long cycle performance. Thus, the Fe3S4NSs@rGO deliver a reversible capacity of 950 mAh g−1 after 200 cycles at a current density of 1A g−1 and 524 mAh g−1 after 400 cycles at a current density of 2A g−1, which is much higher than reported materials.
- Subjects :
- Engineering (General). Civil engineering (General)
TA1-2040
Subjects
Details
- Language :
- English, French
- ISSN :
- 2261236X
- Volume :
- 358
- Database :
- Directory of Open Access Journals
- Journal :
- MATEC Web of Conferences
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.981ce1556044d868f10f9540eeddebe
- Document Type :
- article
- Full Text :
- https://doi.org/10.1051/matecconf/202235801068