Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 21, Issue 40, Pages 15969-15974Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm12670a
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Funding
- National Natural Science Foundation of China [50872039]
- Natural Science Foundation of Hubei Province [2010CDB04005]
- China Postdoctoral Science Foundation [20090460996]
- CCNU from the colleges' basic research and operation of MOE [CCNU09A01019]
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Co-Fe layered double hydroxide (LDH) nanowall arrays (NWAs) have been grown directly from a flexible alloy substrate by a facile hydrothermal method. An ultrasonication test of 30 min towards the as-made Co-Fe LDH NWAs has demonstrated their ultra-robust mechanical adhesion to the substrate. In particular, an in situ carbon-source coating (ISCC) on the Co-Fe LDH NWAs was achieved during their in situ growing process conducted in a glucose-containing reaction solution. After annealing treatment in an argon atmosphere, carbon coated Co-Fe mixed oxide NWAs were evolved from thermal decomposition of LDH precursors and carbonization of glucose, and further investigated as anode materials for lithium-ion batteries (LIBs). When tested, the obtained carbon coated Co-Fe mixed oxide NWAs with improved electrical conductivity exhibited superior electrochemical performance in terms of specific capacity and cyclability as compared to a carbon-free sample and a sample made by the previous carbon-coating method. Our work presents an alternative way to fabricate in situ mixed transition metal oxide nanostructures for high-performance LIBs.
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