Molecular Spring Enabled High-Performance Anode for Lithium Ion Batteries

Molecular Spring Enabled High-Performance Anode for Lithium Ion Batteries

TitleMolecular Spring Enabled High-Performance Anode for Lithium Ion Batteries
Publication TypeJournal Article
Year of Publication2017
AuthorsTianyue Zheng, Zhe Jia, Na Lin, Thorsten Langer, Simon Lux, Isaac Lund, Ann-Christin Gentschev, Juan Qiao, Gao Liu
JournalPolymers
Volume9
Issue12
Pagination657
Date Published12/2017
Abstract

Flexible butyl interconnection segments are synthetically incorporated into an electronically conductive poly(pyrene methacrylate) homopolymer and its copolymer. The insertion of butyl segment makes the pyrene polymer more flexible, and can better accommodate deformation. This new class of flexible and conductive polymers can be used as a polymer binder and adhesive to facilitate the electrochemical performance of a silicon/graphene composite anode material for lithium ion battery application. They act like a "spring" to maintain the electrode mechanical and electrical integrity. High mass loading and high areal capacity, which are critical design requirements of high energy batteries, have been achieved in the electrodes composed of the novel binders and silicon/graphene composite material. A remarkable area capacity of over 5 mAh/cm2 and volumetric capacity of over 1700 Ah/L have been reached at a high current rate of 333 mA/g.

DOI10.3390/polym9120657
Short TitlePolymers
Refereed DesignationRefereed