title: Enhanced reversible lithium storage in germanium nano-island coated 3D hexagonal bottle-like Si nanorod arrays.
abstract: The rapid development of numerous microscale electronic devices, such as smart dust, micro or nano bio-sensors, medical implants and so on, has induced an urgent demand for integratable micro or nano battery supplies with high energy and power densities. In this work, 3D hexagonal bottle-like Si/Ge composite nanorod (NR) array electrodes with good uniformity and mechanical stability potentially used in micro or nano rechargeable Li-ion batteries (LIBs) were fabricated on Si substrates by a cost-effective, wafer scale and Si-compatible process. The optimized Ge nano-islands coated Si NR composite arrays as anode materials exhibit superior areal capacities and cycling performances by virtue of their favourable structural and improved conductivity features. The unique Si-based composite electrode in nanostructures can be technically and fundamentally employed to configurate all-solid-state Li-ion micro-batteries as on-chip power systems integrated into micro-electronic devices such as M/NEMS devices or autonomous wireless microsystems.
authors.affiliation: Department of Physics/Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen, Fujian, 361005, China. lijing@xmu.edu.cn.
authors.forename: Chuang
authors.initials: C
authors.lastname: Yue
authors.forename: Yingjian
authors.initials: Y
authors.lastname: Yu
authors.forename: ZhenGuo
authors.initials: Z
authors.lastname: Wu
authors.forename: Xu
authors.initials: X
authors.lastname: He
authors.forename: JianYuan
authors.initials: J
authors.lastname: Wang
authors.forename: JunTao
authors.initials: J
authors.lastname: Li
authors.forename: Cheng
authors.initials: C
authors.lastname: Li
authors.forename: Suntao
authors.initials: S
authors.lastname: Wu
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Junyong
authors.initials: J
authors.lastname: Kang
mesh_terms: D015374:Biosensing Techniques; D004058:Diffusion; D011211:Electric Power Supplies; D004563:Electrochemistry; D004566:Electrodes; D004581:Electronics; D005857:Germanium / Q000737:chemistry*; D008094:Lithium / Q000737:chemistry*; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry; D036103:Nanotechnology; D043942:Nanotubes / Q000737:chemistry; D011137:Polystyrenes / Q000737:chemistry; D012825:Silicon / Q000737:chemistry*
chemical_list: D011137:Polystyrenes; D005857:Germanium; D008094:Lithium; D012825:Silicon