Template-free synthesis of metal oxide hollow micro-/nanospheres via Ostwald ripening for lithium-ion batteries
Weng, WS (Weng, Wangsuo)[ 1 ] ; Lin, J (Lin, Jun)[ 1 ] ; Du, YC (Du, Yichen)[ 1 ] ; Ge, XF (Ge, Xufang)[ 1 ] ; Zhou, XS (Zhou, Xiaosi)[ 1 ]*(周小四); Bao, JC (Bao, Jianchun)[ 1 ]
[ 1 ] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China
JOURNAL OF MATERIALS CHEMISTRY A,201806,6(22), 10168-10175
Transition metal oxide hollow structures have drawn tremendous attention as electrode materials for lithiumion batteries (LIBs) due to their unique structural features and rich chemical properties. As electrode materials for LIBs, transition metal oxide hollow structures exhibit high specific capacity, excellent rate capability, and outstanding cycling performance. In the past few decades, unremitting efforts have been devoted to the design and synthesis of various transition metal oxide hollow structures with controlled shape, composition, and structural complexity to boost their electrochemical properties. Direct synthesis without the need for additional templates is preferred in practical applications due to significantly reduced production cost and the ease of scaling up. A number of template-free approaches have been developed for fabricating hollow structures on the basis of different mechanisms, including the Kirkendall effect, oriented attachment, and Ostwald ripening. Among them, Ostwald ripening, a process by which bigger particles form at the expense of tinier ones, has been verified to be an efficient method to produce hollow structures. In this review, we summarize the progress in the template-free synthesis of some binary transition metal oxide hollow structures (such as TiO2, VO2, MnO2, Fe3O4, and SnO2) based on the Ostwald ripening mechanism. A relationship between structural and compositional engineering with the enhanced electrochemical performance of transition metal oxide hollow structures is sought, in order to shed light on the development of advanced electrode materials for next-generation LIBs.
版权与免责声明:本网页的内容由收集互联网上公开发布的信息整理获得。目的在于传递信息及分享,并不意味着赞同其观点或证实其真实性,也不构成其他建议。仅提供交流平台,不为其版权负责。如涉及侵权,请联系我们及时修改或删除。邮箱:sales@allpeptide.com