title: α-Fe2O3 nanowall arrays: hydrothermal preparation, growth mechanism and excellent rate performances for lithium ion batteries.
abstract: α-Fe(2)O(3) nanowall arrays (NWAs) were grown directly on Ni foam by a facile hydrothermal method. Based on time-dependent experiment results, a possible formation mechanism for this structure was proposed. The as-prepared α-Fe(2)O(3) samples have an open network structure constituted of interconnected nanowalls and can be directly used as integrated electrodes for lithium-ion batteries (LIBs). The unique nanostructural feature is advantageous in electron transport and electrolyte diffusion efficiency, which can accelerate the electrochemical reaction. Thus, compared to a traditional electrode, the unique assembly reduces polarization of the electrode and results in excellent rate performances (440 mA h g(-1) at 5 C).
authors.affiliation: Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education, Hunan University, PR China.
authors.forename: Danni
authors.initials: D
authors.lastname: Lei
authors.forename: Ming
authors.initials: M
authors.lastname: Zhang
authors.forename: Baihua
authors.initials: B
authors.lastname: Qu
authors.forename: Libao
authors.initials: L
authors.lastname: Chen
authors.forename: Yanguo
authors.initials: Y
authors.lastname: Wang
authors.forename: Endi
authors.initials: E
authors.lastname: Zhang
authors.forename: Zhi
authors.initials: Z
authors.lastname: Xu
authors.forename: Qiuhong
authors.initials: Q
authors.lastname: Li
authors.forename: Taihong
authors.initials: T
authors.lastname: Wang
mesh_terms: D011211:Electric Power Supplies; D055664:Electrochemical Techniques; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry; D004579:Electron Transport; D005290:Ferric Compounds / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*
chemical_list: D004573:Electrolytes; D005290:Ferric Compounds; C000499:ferric oxide; D008094:Lithium