MIT researchers developed a model that explains lithium intercalation rates in lithium-ion batteries. WEBWIRE – Friday, October 3, 2025 At the heart of all lithium-ion batteries is a simple reaction: Lithium ions dissolved in an electrolyte solution intercalate or insert themselves into a solid electrode during battery discharge. When they de-intercalate and return to the electrolyte, the battery charges. This process happens thousands of times throughout the life of a battery. The amount of p...