Enhanced Ion Conductivity in Conducting Polymer Binder for High-Performance Silicon Anodes in Advanced Lithium-Ion Batteries

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Wenwu Zeng
  • Lei Wang
  • Tiefeng Liu
  • Youyu Jiang
  • Fei Qin
  • Lin Hu
  • Kaifu Huo
  • Yinhua Zhou

Detail(s)

Original languageEnglish
Journal / PublicationAdvanced Energy Materials
Volume8
Issue number11
Early online date8 Jan 2018
Publication statusPublished - 16 Apr 2018

Abstract

Polymer binders with high ion and electron conductivities are prepared by assembling ionic polymers (polyethylene oxide and polyethylenimine) onto the electrically conducting polymer poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) chains. Crosslinking, chemical reductions, and electrostatics increase the modulus of the binders and maintain the integrity of the anode. The polymer binder shows lithium-ion diffusivity and electron conductivity that are 14 and 90 times higher than those of the widely used carboxymethyl cellulose (with acetylene black) binder, respectively. The silicon anode with the polymer binder has a high reversible capacity of over 2000 mA h g−1 after 500 cycles at a current density of 1.0 A g−1 and maintains a superior capacity of 1500 mA h g−1 at a high current density of 8.0 A g−1.

Research Area(s)

  • conducting polymers, ion conductivity, large capacity, lithium-ion batteries, Si anodes

Citation Format(s)

Enhanced Ion Conductivity in Conducting Polymer Binder for High-Performance Silicon Anodes in Advanced Lithium-Ion Batteries. / Zeng, Wenwu; Wang, Lei; Peng, Xiang; Liu, Tiefeng; Jiang, Youyu; Qin, Fei; Hu, Lin; Chu, Paul K.; Huo, Kaifu; Zhou, Yinhua.

In: Advanced Energy Materials, Vol. 8, No. 11, 16.04.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review