title: Periodic organosilica hollow nanospheres as anode materials for lithium ion rechargeable batteries.
abstract: Polymeric micelles with core-shell-corona architecture have been found to be the efficient colloidal templates for synthesis of periodic organosilica hollow nanospheres over a broad pH range from acidic to alkaline media. In alkaline medium, poly (styrene-b-[3-(methacryloylamino)propyl] trimethylammonium chloride-b-ethylene oxide) (PS-PMAPTAC-PEO) micelles yield benzene-silica hollow nanospheres with molecular scale periodicity of benzene groups in the shell domain of hollow particles. Whereas, an acidic medium (pH 4) produces diverse hollow particles with benzene, ethylene, and a mixture of ethylene and dipropyldisulfide bridging functionalities using poly(styrene-b-2-vinyl pyridine-b-ethylene oxide) (PS-PVP-PEO) micelles. These hollow particles were thoroughly characterized by powder X-ray diffraction (XRD), dynamic light scattering (DLS), thermogravimetric analysis (TG/DTA), Fourier transformation infrared (FTIR) spectroscopy, transmission electron microscopy (TEM), magic angle spinning-nuclear magnetic resonance ((29)Si MAS NMR and (13)CP-MAS NMR), Raman spectroscopy, and nitrogen adsorption/desorption analyses. The benzene-silica hollow nanospheres with molecular scale periodicity in the shell domain exhibit higher cycling performance of up to 300 cycles in lithium ion rechargeable batteries compared with micron-sized dense benzene-silica particles.
authors: Department of Chemistry, Faculty of Science and Engineering, Saga University, 1 Honjo-machi, Saga, 840-8502, Japan.
authors: Manickam
authors: M
authors: Sasidharan
authors: Kenichi
authors: K
authors: Nakashima
authors: Nanda
authors: N
authors: Gunawardhana
authors: Toshiyuki
authors: T
authors: Yokoi
authors: Masanori
authors: M
authors: Ito
authors: Masamichi
authors: M
authors: Inoue
authors: Shin-ichi
authors: S
authors: Yusa
authors: Masaki
authors: M
authors: Yoshio
authors: Takashi
authors: T
authors: Tatsumi
mesh_terms: D011211:Electric Power Supplies; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007477:Ions; D008094:Lithium / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D009930:Organic Chemicals / Q000737:chemistry*; D010316:Particle Size; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D007477:Ions; D009930:Organic Chemicals; D012822:Silicon Dioxide; D008094:Lithium