Electrochemical energy storage devices
摘要
說明書
Without wishing to be bound by any theory, the ionic conductivity transport mechanism may arise through defects or voids present in the amorphous structure that effectively allow migration of ions across the electrolyte. The ionic conductivity transport mechanism may also or alternatively arise through the ability of the amorphous structure to accommodate incorporation of ions from one region of the structure and a corresponding release of ions from another region of the structure. Again without wishing to be bound by any theory, the electrical conductivity transport mechanism, in contrast, may arise through transfer of electrons along crystal grain boundaries. As the number of grain boundaries are limited in a single crystal material, electron conductivity may be relatively low. In a polycrystalline material, which has many grain boundaries, the electron conductivity may be relatively high. In an amorphous material, no grain boundaries may be present because the material may not have a regular crystal structure, and thus the primary electron transport mechanism (i.e., along grain boundaries) may be suppressed. It will be appreciated that formation of amorphous solid electrolytes may be achieved through careful control of the fabrication conditions, such as deposition rate, temperature, pressure, etc.
