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Cited 4 time in webofscience Cited 5 time in scopus
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Simple and scalable gelatin-mediated synthesis of a novel iron sulfide/graphitic carbon nanoarchitecture for sustainable sodium-ion storage

Authors
Haridas, A.K.Sadan, M.K.Liu, Y.Jung, H.Y.Lee, Y.Ahn, H.-J.Ahn, J.-H.
Issue Date
Dec-2022
Publisher
Elsevier Ltd
Keywords
Biomass-derived graphitic carbon; Conversion anode; Gelatin-mediated synthesis; Heteroatom doping; High-rate capability; Sodium-ion batteries
Citation
Journal of Alloys and Compounds, v.928
Indexed
SCIE
SCOPUS
Journal Title
Journal of Alloys and Compounds
Volume
928
URI
https://scholarworks.bwise.kr/gnu/handle/sw.gnu/767
DOI
10.1016/j.jallcom.2022.167125
ISSN
0925-8388
Abstract
Transition metal sulfide (TMS)-based sodium-ion batteries (SIBs) are inherently different from traditional intercalation-based ones because of their ability to store more than one Na+ per transition metal ion via conversion reaction. Iron sulfide (FeS) is an attractive conversion electrode material with a high theoretical capacity. Apart from the extensive availability and cost-effectiveness, many issues deter the development of iron sulfide-based SIBs. Huge volume changes accompanied by polysulfide generation and dissolution with long-term electrochemical cycling of FeS result in tremendous deterioration in capacity. To resolve these complex concerns, we herein present the strategic design of a porous, three-dimensional (3D) interconnected network of carbon nanosheets consisting of well-confined FeS nanoparticles via a simple and scalable gelatin-mediated sol-gel method utilizing the coordination capability of carboxylic and amino acid groups in biomass precursor gelatin with Fe3+. While the in-situ generated nano FeS shortens the Na+ diffusion pathway, the heteroatom (N, S) doped graphitic carbon network improves the ion/electron transport, buffers the volume change in FeS, and simultaneously immobilizes the polysulfide species dissolved in ether electrolyte. The as-synthesized novel composite delivers a high specific capacity of 303.4 mAh g?1 after 1200 cycles at a high current rate of 10 A g?1, with a low capacity-decay rate of 0.029% per cycle, delivering stable, long-term sodium-ion storage. Additionally, a full sodium-ion battery assembled with Na3V2(PO4)3 cathode and this composite achieve a stable specific capacity of 347.9 mAh g?1 after 100 cycles at 0.5 A g?1 with a capacity retention of ∼86.5% demonstrating the competence for practical applications. ? 2022 Elsevier B.V.
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공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
융합기술공과대학 > Department of Energy Engineering > Journal Articles

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Ahn, Hyo Jun
대학원 (나노신소재융합공학과)
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