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Dual-Carbon-Confined Fe7 S8 Anodes with Enhanced Electrochemical Catalytic Conversion Process for Ultralong Lithium Storage.
Chemistry. 2018 Nov 22; 24(65):17339-17344.C

Abstract

Although the electrochemical catalytic conversion process is effective in increasing the reversible capacity of lithium-ion batteries, the low contact efficiency between metal catalyst and substrate and pulverization of the solid electrolyte interface (SEI) film without protection are not beneficial for the electrochemical reactions. Herein, Fe7 S8 nanoparticles are confined by both reduced graphene oxide (RGO) and in-situ-formed amorphous carbon (C) to form dual-carbon-confined Fe7 S8 as a lithium-ion anode. The dual-carbon-confined structure provides a confined space to prevent pulverization of the SEI film and increases the local concentration of intermediate phases, which could be electrocatalytically decomposed by Fe nanoparticles formed in situ to increase the reversibility of the electrochemical reactions and gain high reversible capacity. In addition, the dual-carbon-confined structure ensures fast transfer of electrons and boosts transport of lithium ions due to the highly conductive dual-carbon shell. Thus, the Fe7 S8 /C/RGO anode delivers an excellent rate performance and long cycling stability. At current densities of 2000 and 5000 mA g-1 , the reversible capacities are 520 mA h g-1 over 1500 cycles and 294 mA h g-1 over 2000 cycles, respectively.

Authors+Show Affiliations

State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China. Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P.R. China. Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing, 100029, P.R. China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30226279

Citation

Zhang, Yu-Jiao, et al. "Dual-Carbon-Confined Fe7 S8 Anodes With Enhanced Electrochemical Catalytic Conversion Process for Ultralong Lithium Storage." Chemistry (Weinheim an Der Bergstrasse, Germany), vol. 24, no. 65, 2018, pp. 17339-17344.
Zhang YJ, Chang W, Qu J, et al. Dual-Carbon-Confined Fe7 S8 Anodes with Enhanced Electrochemical Catalytic Conversion Process for Ultralong Lithium Storage. Chemistry. 2018;24(65):17339-17344.
Zhang, Y. J., Chang, W., Qu, J., Hao, S. M., Ji, Q. Y., Jiang, Z. G., & Yu, Z. Z. (2018). Dual-Carbon-Confined Fe7 S8 Anodes with Enhanced Electrochemical Catalytic Conversion Process for Ultralong Lithium Storage. Chemistry (Weinheim an Der Bergstrasse, Germany), 24(65), 17339-17344. https://doi.org/10.1002/chem.201804221
Zhang YJ, et al. Dual-Carbon-Confined Fe7 S8 Anodes With Enhanced Electrochemical Catalytic Conversion Process for Ultralong Lithium Storage. Chemistry. 2018 Nov 22;24(65):17339-17344. PubMed PMID: 30226279.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dual-Carbon-Confined Fe7 S8 Anodes with Enhanced Electrochemical Catalytic Conversion Process for Ultralong Lithium Storage. AU - Zhang,Yu-Jiao, AU - Chang,Wei, AU - Qu,Jin, AU - Hao,Shu-Meng, AU - Ji,Qiu-Yu, AU - Jiang,Zhi-Guo, AU - Yu,Zhong-Zhen, Y1 - 2018/10/31/ PY - 2018/08/19/received PY - 2018/09/15/revised PY - 2018/9/19/pubmed PY - 2018/9/19/medline PY - 2018/9/19/entrez KW - carbon KW - electrochemistry KW - iron sulfides KW - lithium-ion batteries KW - nanoparticles SP - 17339 EP - 17344 JF - Chemistry (Weinheim an der Bergstrasse, Germany) JO - Chemistry VL - 24 IS - 65 N2 - Although the electrochemical catalytic conversion process is effective in increasing the reversible capacity of lithium-ion batteries, the low contact efficiency between metal catalyst and substrate and pulverization of the solid electrolyte interface (SEI) film without protection are not beneficial for the electrochemical reactions. Herein, Fe7 S8 nanoparticles are confined by both reduced graphene oxide (RGO) and in-situ-formed amorphous carbon (C) to form dual-carbon-confined Fe7 S8 as a lithium-ion anode. The dual-carbon-confined structure provides a confined space to prevent pulverization of the SEI film and increases the local concentration of intermediate phases, which could be electrocatalytically decomposed by Fe nanoparticles formed in situ to increase the reversibility of the electrochemical reactions and gain high reversible capacity. In addition, the dual-carbon-confined structure ensures fast transfer of electrons and boosts transport of lithium ions due to the highly conductive dual-carbon shell. Thus, the Fe7 S8 /C/RGO anode delivers an excellent rate performance and long cycling stability. At current densities of 2000 and 5000 mA g-1 , the reversible capacities are 520 mA h g-1 over 1500 cycles and 294 mA h g-1 over 2000 cycles, respectively. SN - 1521-3765 UR - https://www.unboundmedicine.com/medline/citation/30226279/Dual_Carbon_Confined_Fe7_S8_Anodes_with_Enhanced_Electrochemical_Catalytic_Conversion_Process_for_Ultralong_Lithium_Storage_ L2 - https://doi.org/10.1002/chem.201804221 DB - PRIME DP - Unbound Medicine ER -
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