Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 38, Pages 13162-13164Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja1060438
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- Ministry of Education (Singapore) through the AcRF Tier-1 [RG 63/08, M52120096]
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In this work, we report a facile top-down approach to fabricate uniform single-crystal alpha-Fe2O3 nanodiscs via selective oxalic acid etching. Phosphate ions are employed as a capping agent to control the etching to along the [001] direction. We also show that alpha-Fe2O3 melon-like microparticles with contrasting textural properties can be generated using the same approach. The etched particles exhibit a much larger total pore volume and average pore size compared to the pristine ones, thus serving as the possible origin for their greatly enhanced capacity retention when tested as potential anode materials for lithium-ion batteries.
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