文献类型：期刊文献

英文题名：Top-Down Fabrication of α-Fe₂O₃ Single-Crystal Nanodiscs and Microparticles with Tunable Porosity for Largely Improved Lithium Storage Properties

作者：Chen, Jun Song[1];Zhu, Ting[1];Yang, Xiao Hua[2];Yang, Hua Gui[2];Lou, Xiong Wen (David)[1]

机构：[1]Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore;[2]E China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2010

卷号：132

期号：38

起止页码：13162

外文期刊名：JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000282304000024)】；

基金：The authors are grateful to the Ministry of Education (Singapore) for financial support through the AcRF Tier-1 funding (RG 63/08, M52120096).

语种：英文

摘要：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.