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

Citations Over TimeTop 1% of 2018 papers

Abstract

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 .

Related Papers

• → Effect of Mixed Ions and Ion Irradiation on Ionic Conductivity of Solid Polymer Electrolytes(2019)5 cited
• → Ionic conductivity of CaF2-SrF2 mixed crystals(1990)10 cited
• → Solid electrolyte transition and conductivity in 0.1NaI?0.9AgI(2004)8 cited
• → Ion beam irradiation as a tool to improve the ionic conductivity in solid polymer electrolyte systems(2016)2 cited
• The behavior of anode bubbles in aluminum electrolytic cell(2013)