title: Enhancement of Electrochemical Performance by the Oxygen Vacancies in Hematite as Anode Material for Lithium-Ion Batteries.
abstract: The application of hematite in lithium-ion batteries (LIBs) has been severely limited because of its poor cycling stability and rate performance. To solve this problem, hematite nanoparticles with oxygen vacancies have been rationally designed by a facile sol-gel method and a sequential carbon-thermic reduction process. Thanks to the existence of oxygen vacancies, the electrochemical performance of the as-obtained hematite nanoparticles is greatly enhancing. When used as the anode material in LIBs, it can deliver a reversible capacity of 1252 mAh g-1at 2 C after 400 cycles. Meanwhile, the as-obtained hematite nanoparticles also exhibit excellent rate performance as compared to its counterparts. This method not only provides a new approach for the development of hematite with enhanced electrochemical performance but also sheds new light on the synthesis of other kinds of metal oxides with oxygen vacancies.
authors.affiliation: Key Laboratory of Functional Molecular Solids, Ministry of Education, Center for Nano Science and Technology, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China.
authors.forename: Peiyuan
authors.initials: P
authors.lastname: Zeng
authors.affiliation: Key Laboratory of Functional Molecular Solids, Ministry of Education, Center for Nano Science and Technology, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China.
authors.forename: Yueying
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, China.
authors.forename: Yingwu
authors.initials: Y
authors.lastname: Lin
authors.affiliation: Key Laboratory of Functional Molecular Solids, Ministry of Education, Center for Nano Science and Technology, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China.
authors.forename: Xiaoxiao
authors.initials: X
authors.lastname: Wang
authors.affiliation: Key Laboratory of Functional Molecular Solids, Ministry of Education, Center for Nano Science and Technology, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China.
authors.forename: Jianwen
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Functional Molecular Solids, Ministry of Education, Center for Nano Science and Technology, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China.
authors.forename: Wanwan
authors.initials: W
authors.lastname: Wang
authors.affiliation: Key Laboratory of Functional Molecular Solids, Ministry of Education, Center for Nano Science and Technology, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People's Republic of China. fzfscn@mail.ahnu.edu.cn.|, Present address: East Beijing Road 1#, Wuhu, Anhui Province, People's Republic of China. fzfscn@mail.ahnu.edu.cn.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Fang
keywords: Calcination; Hematite; Lithium-ion batteries; Oxygen vacancies