Suppressing Chemical Corrosions of Lithium Metal Anodes

The lithium metal anode is essential for next-generation high-energy-density rechargeable Li-metal batteries. Although extensive studies have been performed to prolong the cycle life of batteries, calendar life, which associates with chemical corrosion Li in liquid electrolytes, has not quantitatively understood. Here, by combing titration gas chromatography method and cryogenic focused ion beam, a quantitative relationship between rate electrochemically deposited morphology various electrolyte systems established. It identified that dominated porosity Li. larger has, faster will be. Strategies mitigate on thus extend batteries are further proposed. By strictly controlling stacking pressure during plating, deposits ultra-low can be achieved, suppressing 0.08 ± 0.16%/day compared 1.71 0.19%/day high-porosity