Abstract
We report the analysis of comb-like polymers by solid-state NMR. The polymers were previously evaluated as solid-polymer-electrolytes (SPE) for lithium-polymer-metal batteries that have suitable ionic conductivity at 60 °C. We propose to develop a correlation between 13C solid-state NMR measurements and phase segregation. 13C solid-state NMR is a perfect tool for differentiating polymer phases with fast or slow motions. 7Li was used to monitor the motion of lithium ions in the polymer, and activation energies were calculated.
Highlights
Global warming is a major challenge of the twenty-first century, and finding solutions is critical for the future of humanity
Lin et al [17] calculated the activation energy (Ea) of lithium diffusion from the slope of the curve at low temperatures by the Arrhenius relationship. This information is relevant for sample 3 because it is impossible to obtain using AC impedance measurements because this polymer cannot be prepared as a thin film
The development of well-define micro-structured polymers offers a new trend in solid polymer electrolytes
Summary
Global warming is a major challenge of the twenty-first century, and finding solutions is critical for the future of humanity. Based on the discovery of ionic conduction in poly(ethylene oxide) (PEO) by Wright in 1975 [5] and its first application to batteries by Armand and co-workers in 1979 [6], solid polymer electrolytes (SPE) have been investigated by many groups as a safety-improving solution. Using elegant polymer architectures with rigid and soft blocks to create phase separation is a trend in the development of a new SPE [12,13,14,15].
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