Gram-scale synthesis of rGO wrapped porous alpha-Fe2O3 as an advanced anode material for Na-ion batteries with superior cyclic stability
- Authors
- Kandula, Syam; Bae, Junho; Cho, Jinhan; Son, Jeong Gon
- Issue Date
- 1-9월-2021
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Economical approach; Sodium-ion batteries (SIBs); Electrode materials; Energy storage devices; Specific capacity
- Citation
- COMPOSITES PART B-ENGINEERING, v.220
- Indexed
- SCIE
SCOPUS
- Journal Title
- COMPOSITES PART B-ENGINEERING
- Volume
- 220
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/127638
- DOI
- 10.1016/j.compositesb.2021.108995
- ISSN
- 1359-8368
- Abstract
- Synthesis of various earth-abundant electroactive materials in gram-scale via simple methods with excellent efficiency can effectively reduce the cost. In this context, we have demonstrated a gram-scale synthesis of alpha-Fe2O3@rGO core@shell nanocubes via a direct solution route. By the concept of charge-charge interactions, we have successfully wrapped the reduced graphene oxide (rGO) over the surface of alpha-Fe2O3 nanocubes resulting in the formation of alpha-Fe2O3@rGO core@shell nanocubes in a gram-scale. The synthesized alpha-Fe2O3@rGO core@shell nanocubes were characterized by a group of analytical methods and finally explored as an effective anode material for sodium-ion batteries (SIBs). The alpha-Fe2O3@rGO-10 wt% core@shell nanocubes sample displays an exceptional specific capacity of 970.2 mAh g-1 at 0.1 C-rate with a better rate capability of 77.8 mAh g-1 at 5.0 C-rate. Moreover, the alpha-Fe2O3@rGO-10 wt% sample also demonstrates a better specific capacity of about 586.9 mAh g-1 after 100 cycles at 0.1 C-rate. The current approach can enable the synthesis of various electroactive materials on a gram-scale using a cost-effective strategy with better electrochemical performance for practical energy storage devices.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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