Improved Lithium Ionic Conductivity in Composite Polymer Electrolytes with Oxide-Ion Conducting Nanowires

ACS Nano ◽  
2016 ◽  
Vol 10 (12) ◽  
pp. 11407-11413 ◽  
Author(s):  
Wei Liu ◽  
Dingchang Lin ◽  
Jie Sun ◽  
Guangmin Zhou ◽  
Yi Cui
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Composite Polymer ◽  
Composite Polymer Electrolytes ◽  
Ion Conducting ◽  
Oxide Ion

Improving Ionic Conductivity with Bimodal-Sized Li7La3Zr2O12 Fillers for Composite Polymer Electrolytes

2019 ◽  
Vol 11 (13) ◽  
pp. 12467-12475 ◽  
Author(s):  
Yan Sun ◽  
Xiaowen Zhan ◽  
Jiazhi Hu ◽  
Yikai Wang ◽  
Shuang Gao ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Polymer Electrolytes ◽  
Composite Polymer ◽  
Composite Polymer Electrolytes

Monte Carlo simulation of ionic conductivity in polyethylene oxide

2013 ◽  
Vol 33 (8) ◽  
pp. 713-719 ◽  
Author(s):  
Pei Ling Cheang ◽  
Yee Ling Yap ◽  
Lay Lian Teo ◽  
Eng Kiong Wong ◽  
Ah Heng You ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Ionic Conductivity ◽  
Polyethylene Oxide ◽  
Polymer Electrolytes ◽  
Electrochemical Impedance ◽  
Transference Number ◽  
Transference Numbers ◽  
Composite Polymer ◽  
Composite Polymer Electrolytes ◽  
Steady State Current

Abstract A Monte Carlo (MC) model to incorporate the effect of Al2O3 with different particle sizes in enhancing the ionic conductivity of composite polymer electrolytes consisting of polyethylene oxide (PEO), lithium trifluoromethanesulfonate (LiCF3SO3), and ethylene carbonate (EC), is proposed. The simulated ionic conductivity in our MC model is validated by the results of electrochemical impedance spectroscopy, which determined the room temperature ionic conductivity of various composite electrolyte samples differing from the size of the Al2O3 prepared via the solution cast method. With the simulated current density and recurrence relation, cation transference numbers, t+si of composite polymer electrolytes were derived using the steady-state current method proposed by Bruce et al. Addition of Al2O3 (≤10 μm) in micron size greatly enhances the ionic conductivity to a magnitude of two orders, i.e., from 2.9025×10-7 S/cm to 2.970×10-5 S/cm and doubles the cation transference number from 0.230 to 0.465. However, the addition of Al2O3 (<50 nm) in nano size decreases both the ionic conductivity and the cation transference number. The smaller size of Al2O3 in the nano range is responsible for the congestion on the conducting pathways that traps some of the Li+ in PEO electrolytes.

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