title: Engineered Si sandwich electrode: Si nanoparticles/graphite sheet hybrid on ni foam for next-generation high-performance lithium-ion batteries.
abstract: Si-based electrodes for lithium ion batteries typically exhibit high specific capacity but poor cycling performance. A possible strategy to improve the cycling performance is to design a novel electrode nanostructure. Here we report the design and fabrication of Ni/Si-nanoparticles/graphite clothing hybrid electrodes with a sandwich structure. An efficient dip-coating of Si-NPs combined with carbon deposition was adopted to synthesize the unique architecture, where the Si-NPs are sandwiched between the Ni matrix and the graphite clothing. This material architecture offers many critical features that are desirable for high-performance Si-based electrodes, including efficient ion diffusion, high conductivity, and structure durability, thus ensuring the electrode with outstanding electrochemical performance (reversible capacity of 1800 mA h g(-1) at 2 A g(-1) after 500 cycles). In addition, the hybrid anode does not require any polymeric binder and conductive additives and holds great potential for application in Li-ion batteries.
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Chunhui
authors.initials: C
authors.lastname: Gao
authors.forename: Hailei
authors.initials: H
authors.lastname: Zhao
authors.forename: Pengpeng
authors.initials: P
authors.lastname: Lv
authors.forename: Tianhou
authors.initials: T
authors.lastname: Zhang
authors.forename: Qing
authors.initials: Q
authors.lastname: Xia
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
keywords: Si-based anode; carbon clothing; lithium-ion battery; sandwich architecture