Hydroxybenzenes as Protective Additives for High Voltage Lithium Ion Battery
Journal
삼성학회
Date
2011.11.07
Abstract
A novel type of additives based on hydroxybenzene derivatives were investigated as to
stabilize electrolyte on high voltage cathode surface. Oxidation potential calculation and
electrochemical characterization showed that these additives form a protective layer on
overlithiated layered oxide cathode prior to carbonate electrolyte. Adding small amounts of
hydroxybenzene to the liquid electrolyte exhibit less capacity fading and better high temperature
storage. Surface analysis identified that passivation film is well constructed on cathode surface
with 1,3,5-trihydroxybenzene additive.