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Composite Polymer Electrolytes: Nanoparticles Affect Structure and Properties

Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260-4200, USA
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Academic Editor: Georgios Bokias
Polymers 2016, 8(11), 387; https://doi.org/10.3390/polym8110387
Received: 25 September 2016 / Revised: 25 October 2016 / Accepted: 26 October 2016 / Published: 3 November 2016
(This article belongs to the Special Issue Hybrid Polymeric Materials)
Composite polymer electrolytes (CPEs) can significantly improve the performance in electrochemical devices such as lithium-ion batteries. This review summarizes property/performance relationships in the case where nanoparticles are introduced to polymer electrolytes. It is the aim of this review to provide a knowledge network that elucidates the role of nano-additives in the CPEs. Central to the discussion is the impact on the CPE performance of properties such as crystalline/amorphous structure, dielectric behavior, and interactions within the CPE. The amorphous domains of semi-crystalline polymer facilitate the ion transport, while an enhanced mobility of polymer chains contributes to high ionic conductivity. Dielectric properties reflect the relaxation behavior of polymer chains as an important factor in ion conduction. Further, the dielectric constant (ε) determines the capability of the polymer to dissolve salt. The atom/ion/nanoparticle interactions within CPEs suggest ways to enhance the CPE conductivity by generating more free lithium ions. Certain properties can be improved simultaneously by nanoparticle addition in order to optimize the overall performance of the electrolyte. The effects of nano-additives on thermal and mechanical properties of CPEs are also presented in order to evaluate the electrolyte competence for lithium-ion battery applications. View Full-Text
Keywords: solid polymer electrolyte; ionic conductivity; lithium-ion battery; nanoparticle; dielectric properties; transference number solid polymer electrolyte; ionic conductivity; lithium-ion battery; nanoparticle; dielectric properties; transference number
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MDPI and ACS Style

Wang, W.; Alexandridis, P. Composite Polymer Electrolytes: Nanoparticles Affect Structure and Properties. Polymers 2016, 8, 387.

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