Molecular Spring Enabled High-Performance Anode for Lithium Ion Batteries

Date Published
12/2017
Publication Type
Journal Article
Authors
DOI
10.3390/polym9120657
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.

Journal
Polymers
Volume
9
Year of Publication
2017
Issue
12
Pagination
657
Short Title
Polymers
Refereed Designation
Refereed
Organizations
Research Areas
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