An aqueous rechargeable lithium battery of high energy density based on coated Li metal and LiCoO_2

摘要

Using a coated Li metal as an anode and LiCoO_2 as a cathode, an aqueous rechargeable battery is built up, whose average discharge voltage is 3.70 V. This high voltage stability is due to the "crossover" effect of Li ions, which is different from the traditional ways of increasing overpotentials. The total energy density can be 465 W h kg~(-1).