title: Sphere-shaped hierarchical cathode with enhanced growth of nanocrystal planes for high-rate and cycling-stable li-ion batteries.
abstract: High-energy and high-power Li-ion batteries have been intensively pursued as power sources in electronic vehicles and renewable energy storage systems in smart grids. With this purpose, developing high-performance cathode materials is urgently needed. Here we report an easy and versatile strategy to fabricate high-rate and cycling-stable hierarchical sphered cathode Li(1.2)Ni(0.13)Mn(0.54)Co(0.13)O2, by using an ionic interfusion method. The sphere-shaped hierarchical cathode is assembled with primary nanoplates with enhanced growth of nanocrystal planes in favor of Li(+) intercalation/deintercalation, such as (010), (100), and (110) planes. This material with such unique structural features exhibits outstanding rate capability, cyclability, and high discharge capacities, achieving around 70% (175 mAh g(-1)) of the capacity at 0.1 C rate within about 2.1 min of ultrafast charging. Such cathode is feasible to construct high-energy and high-power Li-ion batteries.
authors.affiliation: School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing Key Laboratory of Environmental Science and Engineering , Beijing 100081, People's Republic of China.
authors.forename: Linjing
authors.initials: L
authors.lastname: Zhang
authors.forename: Ning
authors.initials: N
authors.lastname: Li
authors.forename: Borong
authors.initials: B
authors.lastname: Wu
authors.forename: Hongliang
authors.initials: H
authors.lastname: Xu
authors.forename: Lei
authors.initials: L
authors.lastname: Wang
authors.forename: Xiao-Qing
authors.initials: XQ
authors.lastname: Yang
authors.forename: Feng
authors.initials: F
authors.lastname: Wu
keywords: Hierarchical spheres; Li-ion batteries; cycling-stable; electrochemical active planes; high-rate; lithium-rich cathode