title: Developing Polymer Cathode Material for the Chloride Ion Battery.
abstract: The chloride ion battery is an attractive rechargeable battery owing to its high theoretical energy density and sustainable components. An important challenge for research and development of chloride ion batteries lies in the innovation of the cathode materials. Here we report a nanostructured chloride ion-doped polymer, polypyrrole chloride, as a new type of potential cathode material for the chloride ion battery. The as-prepared polypyrrole chloride@carbon nanotubes (PPyCl@CNTs) cathode shows a high reversible capacity of 118 mAh g-1and superior cycling stability. Reversible electrochemical reactions of the PPyCl@CNTs cathode based on the redox reactions of nitrogen species and chloride ion transfer are demonstrated. Our work may guide and offer electrode design principles for accelerating the development of rechargeable batteries with anion transfer.
authors.forename: Xiangyu
authors.identifier: http://orcid.org/0000-0002-9095-4494
authors.initials: X
authors.lastname: Zhao
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zhao
authors.forename: Meng
authors.initials: M
authors.lastname: Yang
authors.affiliation: School of Materials Science and Engineering, Nanjing University of Science and Technology , Xiaolingwei 200, Nanjing 210094, China.
authors.forename: Hui
authors.identifier: http://orcid.org/0000-0002-2517-2410
authors.initials: H
authors.lastname: Xia
authors.forename: Tingting
authors.initials: T
authors.lastname: Yu
authors.forename: Xiaodong
authors.identifier: http://orcid.org/0000-0002-8671-9758
authors.initials: X
authors.lastname: Shen
keywords: cathode materials; chloride ion batteries; electrochemistry; polypyrrole chloride; rechargeable batteries