Abstract
The limit of the current energy density of known secondary battery systems can be surpassed by increasing the capacity of the negative electrode through the employment of alkali and alkali earth metals. Typical issues in such metal anode cells involve dendrite formation, uncontrolled growth of potentially ionically blocking solid electrolyte interphase (SEI), and gas evolution. This chapter gives an overview of how physical, atomic, mechanical, and corrosion properties influence the electrochemical performance of the metal anodes. Models of SEI, dendrite, and their concurrent growth, as well as related characterization techniques, are discussed in detail. Recent materials solutions, including artificial SEI in cells with liquid electrolytes, and new developments in interface control in solid-state electrolytes are also given.
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