title: Enhanced Lithium-Ion Storage Capability of a Bismuth Sulfide/Graphene Oxide/Poly(3,4-ethylenedioxythiophene) Composite.
abstract: A Bi2 S3 /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 Bi2 S3 nanoflowers and composites of Bi2 S3 /GO and Bi2 S3 /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 Bi2 S3 /GO/PEDOT and Bi2 S3 /GO showed superior cycling stability and better rate capability than pristine Bi2 S3 . GO provides highly conducting interconnections, which allow facile propagation of electrons during charge/discharge, and this improves the ion-uptake capability of the Bi2 S3 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 Bi2 S3 /GO/PEDOT composite.
authors.affiliation: Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yedduaram, 502205, Telangana, India), Fax: +91-40-23016003, Tel: +91-40-023016024.
authors.forename: Radha
authors.initials: R
authors.lastname: Mukkabla
authors.affiliation: Department of Chemistry, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yedduaram, 502205, Telangana, India), Fax: +91-40-23016003, Tel: +91-40-023016024. mdeepa@iith.ac.in.
authors.forename: Melepurath
authors.initials: M
authors.lastname: Deepa
authors.affiliation: CSIR-National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi, 110012, India.
authors.forename: Avanish Kumar
authors.initials: AK
authors.lastname: Srivastava
keywords: capacity; charge storage; conducting materials; nanoflowers; polymers