A dual strategy for improving lithium storage performance, a case of Fe{sub 2}O{sub 3}
Graphical abstract: The α-Fe{sub 2}O{sub 3} nanoellipse with180–230 nm (edge length) and 140–170 nm (edge width) has been synthesize and tested as anode material for LIBs. The α-Fe{sub 2}O{sub 3} nanoellipse electrode with sodium alginate (SA) binder exhibits greatly enhanced performance for lithium storage. - Highlights: • α-Fe{sub 2}O{sub 3} nanoellipses were fabricated by a simple hydrothermal method with glycine. • The elliptical α-Fe{sub 2}O{sub 3}-SA electrode exhibits enhanced lithium storage performance. • The reason for the enhanced performance of elliptical α-Fe{sub 2}O{sub 3}-SA was investigated. - Abstract: In this paper, we developed a dual strategy, the nanostructure engineering of active material and the proper choice of binder, to achieve excellent lithium storage performance of transition metal oxides. α-Fe{sub 2}O{sub 3} nanoellipses with a mean size of 180–230 nm (edge length) and 140–170 nm (edge width) were fabricated by a simple hydrothermal method in the presence of glycine. When tested as anode material for lithium ion batteries (LIBs), the α-Fe{sub 2}O{sub 3} nanoellipse electrode with sodium alginate (SA) binder exhibits greatly enhanced performance for lithium storage. The capacity could be retained as high as 1164 mA h g{sup −1} at a current density of 100 mA g{sup −1} for over 60 cycles. Even cycled at high current densities of 2000–5000 mA g{sup −1}, high capacities of 443–628 mA h g{sup −1} can be achieved, whereas the electrode with the conventional poly(vinylidene fluoride) (PVDF) binder suffers from rapid capacity decay under the same test conditions.
- OSTI ID:
- 22420616
- Journal Information:
- Materials Research Bulletin, Vol. 59; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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