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Journal Article

Porous LiMn2O4 as cathode material with high power and excellent cycling for aqueous rechargeable lithium batteries

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Maier,  J.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Qu, Q. T., Fu, L. J., Zhan, X. Y., Samuelis, D., Maier, J., Li, L., et al. (2011). Porous LiMn2O4 as cathode material with high power and excellent cycling for aqueous rechargeable lithium batteries. Energy & Environmental Science, 4(10), 3985-3990.


Cite as: https://hdl.handle.net/21.11116/0000-000E-BE01-B
Abstract
A porous LiMn(2)O(4) consisting of nano grains was prepared by using polystyrene as template. It was studied as a cathode material for aqueous rechargeable lithium batteries (ARLBs) using 0.5 mol l(-1) Li(2)SO(4) aqueous solution as the electrolyte. Charge and discharge capacities at a current density of 10 A g(-1) (about 90C) were 76% and 95% of the total capacity (118 mAh g(-1)), respectively. The power density can be up to 10000 W kg(-1) and the cycling behavior is excellent. After 10000 cycles at 9C with 100% DOD (depth of discharge), the capacity retention of porous LiMn(2)O(4) is 93%, which indicates that it can be used for a lifetime without maintenance. The main reasons for its excellent electrochemical performance are due to the nano grains, porous morphology and high crystalline structure. In addition, the acid-free aqueous electrolyte prevents Mn(2+) from dissolution. These excellent results suggest a great promise for the development of aqueous rechargeable lithium batteries (ARLBs) in practical application.