Hierarchical c-Si/SnO2 nanowires and connected Si-Cu alloy nanotubes as anodes for high performance lithium-ion batteries
(0) Seeking high rate,high mass-loading and durable anode materials for lithium ion batteries(LIBs)has been a crucial aspect to promote the use of electric vehicles and other portable electronics.Silicon(Si)has been well-known as an outstanding candidate for LIBs,with a high lithium storage capacity of 4200 mAh/g and a relatively low lithium insertion potential.However,the process of lithium ions(Li-ion)insertion comes with a huge volume change as large as 400%that will cause a radical pulverization/fracture in the Si host and rapid capacity fading.A common strategy to address this issue is to explore various nanostructured Si materials,including nanoparticles,nanowires(NWs)and nanotubes,which can help to accommodate the large volumetric change during charge/discharge cycling.Among them,nanowire core-shell or hierarchical nano-branch structures have attracted particular interests,where the NW-core can be optimized to serve as efficient electric pathway,while the outer sidewall-coated Si thin film shell or Si NW branches enjoy a large interface for fast Li-ion interaction or insertion.
Hucheng Song HongXiang Wang Linwei Yu Jun Xu Haoshen Zhou Kunji Chen
National Laboratory of Solid State Microstructures and School of Electronics Science and Engineering National Laboratory of Solid State Microstructures and School of Electronics Science and Engineering College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China
国内会议
厦门
英文
91-92
2017-05-25（万方平台首次上网日期，不代表论文的发表时间）