Lithium Foil (Light Tight)

Lithium Foil (Light Tight) (99.9% purity) combines the same battery-grade purity and electrochemical performance as standard lithium foil with a guaranteed pinhole-free structure that blocks all transmission of visible and near-visible light. This pairing is particularly relevant in lithium battery research, where photosensitive in-situ characterization techniques — including optical monitoring of dendrite growth or electrolyte degradation — must be conducted alongside conventional cell assembly without unwanted light exposure to reactive lithium surfaces. With a density of 0.534 g/cm³ and a melting point of 180.5°C, it shares lithium's characteristic low-temperature workability and high reactivity, requiring handling under controlled, low-moisture conditions. Typical applications include light-shielded coin and pouch cell assembly, optical isolation in battery test enclosures, and protective barriers for lithium electrodes in photosensitive experimental setups. In research, it supports battery performance, cycle life, and dendrite formation studies wherever optical isolation must be combined with battery-grade lithium purity.