Jiarui He, Yuanfu Chen, Arumugam Manthiram

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Presentation transcript:

Jiarui He, Yuanfu Chen, Arumugam Manthiram MOF-derived Cobalt Sulfide Grown on 3D Graphene Foam as an Efficient Sulfur Host for Long-Life Lithium-Sulfur Batteries Jiarui He, Yuanfu Chen, Arumugam Manthiram iScience Volume 4, Pages 36-43 (June 2018) DOI: 10.1016/j.isci.2018.05.005 Copyright © 2018 The Author(s) Terms and Conditions

iScience 2018 4, 36-43DOI: (10.1016/j.isci.2018.05.005) Copyright © 2018 The Author(s) Terms and Conditions

Figure 1 Schematic Diagram of the Co9S8-3DGF/S Composite (A) Schematic of the synthetic procedure of the Co9S8-3DGF/S composite. (B) Advantages of the Co9S8-3DGF/S composite over 3DGF/S. iScience 2018 4, 36-43DOI: (10.1016/j.isci.2018.05.005) Copyright © 2018 The Author(s) Terms and Conditions

Figure 2 Morphology and Microstructure Analysis of the Co9S8-3DGF/S Cathode Various magnification SEM inspections of (A–C) Co-MOF-3DGF, (D–F) Co9S8-3DGF, and (G–I) Co9S8-3DGF/S. iScience 2018 4, 36-43DOI: (10.1016/j.isci.2018.05.005) Copyright © 2018 The Author(s) Terms and Conditions

Figure 3 Electrochemical Performance of the Co9S8-3DGF/S Cathode (A) CV curves of the Co9S8-3DGF/S cathode at 0.1 mV s−1 at 1.8–2.8 V. (B) Charge/discharge profiles of the Co9S8-3DGF/S cathode. (C) Cycling stability of the Co9S8-3DGF/S and 3DGF/S cathodes at C/10 rate for 200 cycles. (D) Rate performances at various cycling rates of the Co9S8-3DGF/S and 3DGF/S electrodes. (E) Cycling performances of the Co9S8-3DGF/S electrodes for long-term cycling at 1C rate. iScience 2018 4, 36-43DOI: (10.1016/j.isci.2018.05.005) Copyright © 2018 The Author(s) Terms and Conditions

Figure 4 The Electrochemical Performance of Co9S8-3DGF/S Cathode with High Sulfur Loading (A) Cycling performances of the Co9S8-3DGF/S electrodes with 6.2, 8.1, and 10.4 mg cm−2 sulfur loadings and (B) the corresponding areal capacities. iScience 2018 4, 36-43DOI: (10.1016/j.isci.2018.05.005) Copyright © 2018 The Author(s) Terms and Conditions

Figure 5 Adsorption of Co9S8-3DGF toward Lithium Polysulfides UV-visible spectra of the Li2S6 solution with 3DGF and Co9S8-3DGF. Inset: the photograph of the sealed vials of a Li2S6 solution with a solvent of 1,3-dioxolane (DOL) and 1,2-dimethoxyethane (DME) after contacting with 3DGF and Co9S8-3DGF for 1 hr. iScience 2018 4, 36-43DOI: (10.1016/j.isci.2018.05.005) Copyright © 2018 The Author(s) Terms and Conditions