Intrinsic mechanism of electronic/ionic conduction at the electrolyte/electrode by epitaxial films

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The studies on the intrinsic electron/ion transport at the electrode/electrolyte in the lithium-ion batteries were carried out by using epitaxial thin films. Epitaxial growth was an ideal fabrication technique, which allows us to control the crystal orientation and grain boundaries precisely, for revealing those transport. It is unveiled that one of bottlenecks in the practical electronic and ionic transport was grain boundaries by elucidation of electrical / electrochemical measurements for each transport in the epitaxial films independently. The information obtained in this study will become an important feedback for electrodes and electrolytes, leading the creation of high performance lithium-ion batteries.