A lithium-ion flow battery is a flow battery that uses a form of lightweight lithium as its charge carrier. The flow battery stores energy separately from its system for discharging. The amount of energy it can store is determined by tank size; its power density is determined by the size of the reaction chamber. Dissolving. One device uses dissolved as the, metal as the and an as the electrolyte. Officially "membraneless", it uses a coating to separate A cathode-flow lithium-iodine (Li–I) battery uses the triiodide/iodide (I 3 /I ) redox couple in aqueous solution. It has energy density of 0.33 kWh/kg because of the solubility of LiI in aqueous solution (≈8.2M) and its power density of 130 mW/cm at a current rate of 60 mA/cm. Reversible delithiation/lithiation of was successfully demonstrated using derivatives. This device keeps the energy storage materials stored in separate tanks. The liquids. A semi-solid cell based on the LiTi 2(PO 4) 3–LiFePO 4 couple utilizes fluid electrodes that are electronically conductive. Simultaneous and electrochemical transport. • Wang, Y.; He, P.; Zhou, H. (2012). "Li-Redox Flow Batteries Based on Hybrid Electrolytes: At the Cross Road between Li-ion and Redox Flow Batteries". Advanced Energy Materials. 2 (7): 770. :.