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Porous LiMn2O4 as cathode material with high power and excellent cycling for aqueous rechargeable lithium batteries
Abstract
A porous LiMn2O4 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−1Li2SO4 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 LiMn2O4 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 Mn2+ from dissolution. These excellent results suggest a great promise for the development of aqueous rechargeable lithium batteries (ARLBs) in practical application.
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Cited by
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Metadata
- Authors
- Qu, Q., Fu, L., Zhan, X., Samuelis, D., Maier, J., Li, L., Tian, S., Li, Z., & Wu, Y.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2011
- Volume
- 4
- Issue
- 10
- Pages
- 3985
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2159101705
- Cited by
- 360
- References
- 0
- FWCI
- 25.18
- Type
- journal article
- Language
- en
- Open access
- closed
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