Surface modification of sulfur electrodes by chemically anchored cross-linked polymer coating for lithium-sulfur batteries

Sanghyun Lim; Roshni Lilly Thankamony; Taeeun Yim; Hodong Chu; Young-Jun Kim; Junyoung Mun; Tae-Hyun Kim

doi:10.1021/am508528p

Surface modification of sulfur electrodes by chemically anchored cross-linked polymer coating for lithium-sulfur batteries

ACS Appl Mater Interfaces. 2015 Jan 28;7(3):1401-5. doi: 10.1021/am508528p. Epub 2015 Jan 12.

Authors

Sanghyun Lim¹, Roshni Lilly Thankamony, Taeeun Yim, Hodong Chu, Young-Jun Kim, Junyoung Mun, Tae-Hyun Kim

Affiliation

¹ Organic Material Synthesis Lab. Department of Chemistry, Incheon National University , 119 Academy-ro, Songdo-dong, Yeonsu-gu, Incheon 406-772, Korea.

PMID: 25569854
DOI: 10.1021/am508528p

Abstract

Lithium-sulfur batteries suffer from severe self-discharge due to polysulfide dissolution into electrolytes. In this work, a chemically anchored polymer-coated (CAPC) sulfur electrode was prepared, through chemical bonding by coordinated Cu ions and cross-linking, to improve cyclability for Li/S batteries. This electrode retained specific capacities greater than 665 mAh g(-1) at high current density of 3.35 A g(-1) (2C rate) after 100 cycles with an excellent Coulombic efficiency of 100%.

Keywords: Cu-anchoring; chemical bonding; lithium−sulfur batteries; polymer coating; polysulfide dissolution; sulfur electrode.

Publication types

Research Support, Non-U.S. Gov't