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Aqueous Lithium‐ion Battery LiTi2(PO4)3/LiMn2O4 with High Power and Energy Densities as well as Superior Cycling Stability**

Aqueous Lithium‐ion Battery LiTi2(PO4)3/LiMn2O4 with High Power and Energy Densities as well as... Porous, highly crystalline Nasicon‐type phase LiTi2(PO4)3 has been prepared by a novel poly(vinyl alcohol)‐assisted sol–gel route and coated by a uniform and continuous nanometers‐thick carbon thin film using chemical vapor deposition technology. The as‐prepared LiTi2(PO4)3 exhibits excellent electrochemical performance both in organic and aqueous electrolytes, and especially shows good cycling stability in aqueous electrolytes. An aqueous lithium‐ion battery consisting of a combination of LiMn2O4 cathode, LiTi2(PO4)3 anode, and a 1 M Li2SO4 electrolyte has been constructed. The cell delivers a capacity of 40 mA h g–1 and a specific energy of 60 W h kg–1 with an output voltage of 1.5 V based on the total weight of the active electrode materials. It also exhibits an excellent cycling stability with a capacity retention of 82 % over 200 charge/discharge cycles, which is much better than any aqueous lithium‐ion battery reported. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Functional Materials Wiley

Aqueous Lithium‐ion Battery LiTi2(PO4)3/LiMn2O4 with High Power and Energy Densities as well as Superior Cycling Stability**

Advanced Functional Materials , Volume 17 (18) – Jan 17, 2007

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References (26)

Publisher
Wiley
Copyright
Copyright © 2007 Wiley Subscription Services
ISSN
1616-301X
eISSN
1616-3028
DOI
10.1002/adfm.200700638
Publisher site
See Article on Publisher Site

Abstract

Porous, highly crystalline Nasicon‐type phase LiTi2(PO4)3 has been prepared by a novel poly(vinyl alcohol)‐assisted sol–gel route and coated by a uniform and continuous nanometers‐thick carbon thin film using chemical vapor deposition technology. The as‐prepared LiTi2(PO4)3 exhibits excellent electrochemical performance both in organic and aqueous electrolytes, and especially shows good cycling stability in aqueous electrolytes. An aqueous lithium‐ion battery consisting of a combination of LiMn2O4 cathode, LiTi2(PO4)3 anode, and a 1 M Li2SO4 electrolyte has been constructed. The cell delivers a capacity of 40 mA h g–1 and a specific energy of 60 W h kg–1 with an output voltage of 1.5 V based on the total weight of the active electrode materials. It also exhibits an excellent cycling stability with a capacity retention of 82 % over 200 charge/discharge cycles, which is much better than any aqueous lithium‐ion battery reported.

Journal

Advanced Functional MaterialsWiley

Published: Jan 17, 2007

Keywords: ; ; ;

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