1. Department of Chemistry, Rice University, 5100 Main Street, Houston, Texas 77005, USA;2. Department of Chemistry, Rice University, 5100 Main Street, Houston, Texas 77005, USA;School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China;3. Department of Chemistry, Rice University, 5100 Main Street, Houston, Texas 77005, USA;NanoCarbon Center, Rice University, 6100 Main Street, Houston, Texas 77005, USA;Department of Materials and Engineering, University of Central Florida, 12424 Research Parkway Suite 423,Orlando, Florida 32826, USA
Abstract:
Sandwich structured graphene-wrapped FeS-graphene nanoribbons (G@FeS-GNRs) were developed. In this composite, FeS nanoparticles were sandwiched between graphene and graphene nanoribbons. When used as anodes in lithium ion batteries (LIBs), the G@FeS-GNR composite demonstrated an outstanding electrochemical performance. This composite showed high reversible capacity, good rate performance, and enhanced cycling stability owing to the synergy between the electrically conductive graphene, graphene nanoribbons, and FeS. The design concept developed here opens up a new avenue for constructing anodes with improved electrochemical stability for LIBs.
