title: Organotrisulfide: A High Capacity Cathode Material for Rechargeable Lithium Batteries.
abstract: An organotrisulfide (RSSSR, R is an organic group) has three sulfur atoms which could be involved in multi-electron reduction reactions; therefore it is a promising electrode material for batteries. Herein, we use dimethyl trisulfide (DMTS) as a model compound to study its redox reactions in rechargeable lithium batteries. With the aid of XRD, XPS, and GC-MS analysis, we confirm DMTS could undergo almost a 4 e(-) reduction process in a complete discharge to 1.0 V. The discharge products are primarily LiSCH3 and Li2 S. The lithium cell with DMTS catholyte delivers an initial specific capacity of 720 mAh g(-1) DMTS and retains 82 % of the capacity over 50 cycles at C/10 rate. When the electrolyte/DMTS ratio is 3:1 mL g(-1) , the reversible specific energy for the cell including electrolyte can be 229 Wh kg(-1) . This study shows organotrisulfide is a promising high-capacity cathode material for high-energy rechargeable lithium batteries.
authors.affiliation: Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA.
authors.forename: Min
authors.initials: M
authors.lastname: Wu
authors.affiliation: Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA.
authors.forename: Yi
authors.initials: Y
authors.lastname: Cui
authors.affiliation: Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA.
authors.forename: Amruth
authors.initials: A
authors.lastname: Bhargav
authors.affiliation: Department of Chemistry, Indiana University, Bloomington, IN, 47405, USA.
authors.forename: Yaroslav
authors.initials: Y
authors.lastname: Losovyj
authors.affiliation: Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA.|Department of Chemistry and Chemical Biology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA.
authors.forename: Amanda
authors.initials: A
authors.lastname: Siegel
authors.affiliation: Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA.|Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA.
authors.forename: Mangilal
authors.initials: M
authors.lastname: Agarwal
authors.affiliation: Materials Science and Engineering Center, University of Wisconsin-Eau Claire, Eau Claire, WI, 54702, USA.
authors.forename: Ying
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA. yongfu@iupui.edu.|Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202, USA. yongfu@iupui.edu.
authors.forename: Yongzhu
authors.initials: Y
authors.lastname: Fu
keywords: cathode materials; dimethyl trisulfide; organotrisulfides; rechargeable lithium batteries; redox reactions