Enhanced Lithium‐Ion Storage Capability of a Bismuth Sulfide/Graphene Oxide/Poly(3,4‐ethylenedioxythiophene) Composite |
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| Authors: | Radha Mukkabla Dr Melepurath Deepa Dr Avanish Kumar Srivastava |
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| Institution: | 1. Department of Chemistry, Indian Institute of Technology Hyderabad, Telangana, India), Fax: +91-40-23016003, Tel: +91-40-023016024;2. CSIR-National Physical Laboratory, New Delhi, India |
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| Abstract: | A Bi2S3/graphene oxide (GO) composite enwrapped by a poly(3,4‐ethylenedioxythiophene) (PEDOT) coating was prepared for the first time for use as an anode in Li‐ion batteries. Pristine Bi2S3 nanoflowers and composites of Bi2S3/GO and Bi2S3/GO/PEDOT were assembled into half cells with Li metal as the counter electrode, and initial discharge capacities of 833, 1020, and 1300 mAh g?1, respectively, were obtained. Composites of Bi2S3/GO/PEDOT and Bi2S3/GO showed superior cycling stability and better rate capability than pristine Bi2S3. GO provides highly conducting interconnections, which allow facile propagation of electrons during charge/discharge, and this improves the ion‐uptake capability of the Bi2S3 nanoflowers and also increases the rate capability. PEDOT furnishes a protective coating that prevents detachment of the material from the current collector during cycling, and it also imparts better cycling stability to the Bi2S3/GO/PEDOT composite. |
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| Keywords: | capacity charge storage conducting materials polymers nanoflowers |
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