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Electrospun FeS2@Carbon Fiber Electrode as a High Energy Density Cathode for Rechargeable Lithium Batteries.
ACS Nano. 2016 Jan 26; 10(1):1529-38.AN

Abstract

In this study, an FeS2@carbon fiber electrode is developed with FeS2 nanoparticles either embedded in or attached to carbon fibers by using an electrospinning method. By applying this binder-free, metal-current-collector-free FeS2@carbon fiber electrode, both the redox reaction and capacity decay mechanisms for the Li-FeS2 system are revealed by changing the electrolyte (conventional carbonate electrolyte and a "solvent-in-salt"-type Li-S battery electrolyte) and working voltage ranges (1.0-3.0 V and 1.5-3.0 V vs Li/Li(+)). The FeS2@carbon fiber electrode shows stable cycling performance in both the conventional carbonate electrolyte and the solvent-in-salt-type Li-S battery electrolyte in the voltage range of 1.5-3.0 V. Electrochemical tests in the solvent-in-salt-type Li-S battery electrolyte indicate that the Li-FeS2 system becomes a hybrid of the Li-S cell and Li-iron sulfide cell after the initial cycle. Based on the understanding on the capacity decay mechanisms, the cycling stability of the Li-FeS2 system in the voltage range of 1.0-3.0 V is then significantly enhanced by coating the FeS2@carbon fiber electrode with a thin layer of Al2O3. The Al2O3-coated electrode demonstrates excellent cycling performance with high discharge energy densities at both the material level (∼1300 Wh/kg-FeS2) and the electrode level (∼1000 Wh/kg-FeS2 electrode).

Authors+Show Affiliations

School of Chemistry and Environment, Beihang University , Beijing 100191, People's Republic of China. Department of Chemical and Biomolecular Engineering, University of Maryland , College Park, Maryland 20742, United States.Department of Chemical and Biomolecular Engineering, University of Maryland , College Park, Maryland 20742, United States.Department of Chemical and Biomolecular Engineering, University of Maryland , College Park, Maryland 20742, United States.Department of Chemical and Biomolecular Engineering, University of Maryland , College Park, Maryland 20742, United States.Department of Chemical and Biomolecular Engineering, University of Maryland , College Park, Maryland 20742, United States.Department of Chemical and Biomolecular Engineering, University of Maryland , College Park, Maryland 20742, United States.

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

26700975

Citation

Zhu, Yujie, et al. "Electrospun FeS2@Carbon Fiber Electrode as a High Energy Density Cathode for Rechargeable Lithium Batteries." ACS Nano, vol. 10, no. 1, 2016, pp. 1529-38.
Zhu Y, Fan X, Suo L, et al. Electrospun FeS2@Carbon Fiber Electrode as a High Energy Density Cathode for Rechargeable Lithium Batteries. ACS Nano. 2016;10(1):1529-38.
Zhu, Y., Fan, X., Suo, L., Luo, C., Gao, T., & Wang, C. (2016). Electrospun FeS2@Carbon Fiber Electrode as a High Energy Density Cathode for Rechargeable Lithium Batteries. ACS Nano, 10(1), 1529-38. https://doi.org/10.1021/acsnano.5b07081
Zhu Y, et al. Electrospun FeS2@Carbon Fiber Electrode as a High Energy Density Cathode for Rechargeable Lithium Batteries. ACS Nano. 2016 Jan 26;10(1):1529-38. PubMed PMID: 26700975.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Electrospun FeS2@Carbon Fiber Electrode as a High Energy Density Cathode for Rechargeable Lithium Batteries. AU - Zhu,Yujie, AU - Fan,Xiulin, AU - Suo,Liumin, AU - Luo,Chao, AU - Gao,Tao, AU - Wang,Chunsheng, Y1 - 2015/12/30/ PY - 2015/12/25/entrez PY - 2015/12/25/pubmed PY - 2015/12/25/medline KW - FeS2 KW - atomic layer deposition KW - electrospinning KW - high energy density cathodes KW - lithium-ion batteries SP - 1529 EP - 38 JF - ACS nano JO - ACS Nano VL - 10 IS - 1 N2 - In this study, an FeS2@carbon fiber electrode is developed with FeS2 nanoparticles either embedded in or attached to carbon fibers by using an electrospinning method. By applying this binder-free, metal-current-collector-free FeS2@carbon fiber electrode, both the redox reaction and capacity decay mechanisms for the Li-FeS2 system are revealed by changing the electrolyte (conventional carbonate electrolyte and a "solvent-in-salt"-type Li-S battery electrolyte) and working voltage ranges (1.0-3.0 V and 1.5-3.0 V vs Li/Li(+)). The FeS2@carbon fiber electrode shows stable cycling performance in both the conventional carbonate electrolyte and the solvent-in-salt-type Li-S battery electrolyte in the voltage range of 1.5-3.0 V. Electrochemical tests in the solvent-in-salt-type Li-S battery electrolyte indicate that the Li-FeS2 system becomes a hybrid of the Li-S cell and Li-iron sulfide cell after the initial cycle. Based on the understanding on the capacity decay mechanisms, the cycling stability of the Li-FeS2 system in the voltage range of 1.0-3.0 V is then significantly enhanced by coating the FeS2@carbon fiber electrode with a thin layer of Al2O3. The Al2O3-coated electrode demonstrates excellent cycling performance with high discharge energy densities at both the material level (∼1300 Wh/kg-FeS2) and the electrode level (∼1000 Wh/kg-FeS2 electrode). SN - 1936-086X UR - https://www.unboundmedicine.com/medline/citation/26700975/Electrospun_FeS2@Carbon_Fiber_Electrode_as_a_High_Energy_Density_Cathode_for_Rechargeable_Lithium_Batteries_ L2 - https://dx.doi.org/10.1021/acsnano.5b07081 DB - PRIME DP - Unbound Medicine ER -
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