The crystal structural evolution of nano-Si anode caused by lithium insertion and extraction at room temperature

ABSTRACTGlasses of the series (mol.%) 40 Na2O, (20-x) Al2O3, x Fe2O3, 40 P2O5 were irradiated with 8 MeV electrons to doses equivalent of 0.1, 0.5, and 1.0 MGy and characterized by FTIR spectroscopy and ESR at room temperature. FTIR spectra of all the glasses consist of strong bands due to O-P-O stretching modes in (PO4)3- and (P2O7)4- units at 1000-1200 cm-1, P-O-P stretching modes at 900-950 cm-1 (νas) and 700-750 cm-1 (νs), and bending modes in the PO4 units. The wavenumber range lower 800 cm-1 has some contribution due to stretching modes in MO4 and MO6 (M = Al, Fe) units. Moreover the bands at 3300-3700 cm-1 and 1550-1650 cm-1 due to stretching and bending modes in both absorbed and structurally bound H2O molecules were present. As irradiation dose increases the bands due to stretching and bending modes in water molecules and M-O-H bonds become stronger and are split. No essential changes with increasing dose were observed within the spectral range of stretching modes of the O-P-O and P-O-P bonds. Irradiation yields phosphorus-oxygen hole centers - PO42- (D5) and PO42- (D6), and PO32- ion-radicals (D2) observable in ESR spectra of low-Fe glasses. At x>5 their responses are overlapped with strong broad line due to Fe(III). On the whole, with the increase in iron content the glass structural evolution decrease.

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Structural Evolution of Li[sub 3+x]Fe(MoO[sub 4])[sub 3] upon Lithium Insertion in the Compositional Range 0≤x≤1

Journal of The Electrochemical Society ◽

10.1149/1.2139872 ◽

2006 ◽

Vol 153 (2) ◽

pp. A275 ◽

Cited By ~ 2

Author(s):

M. E. Arroyo y de Dompablo ◽

M. Alvarez-Vega ◽

C. Baehtz ◽

U. Amador

Keyword(s):

Structural Evolution ◽

Lithium Insertion ◽

Compositional Range

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Atomic-scale structural evolution in amorphous Nd9Fe85B6 subjected to severe plastic deformation at room temperature

Applied Physics Letters ◽

10.1063/1.3152013 ◽

2009 ◽

Vol 94 (23) ◽

pp. 231904 ◽

Cited By ~ 17

Author(s):

Wei Li ◽

Xiaohong Li ◽

Defeng Guo ◽

Kiminori Sato ◽

Dmitry V. Gunderov ◽

...

Keyword(s):

Plastic Deformation ◽

Severe Plastic Deformation ◽

Room Temperature ◽

Structural Evolution ◽

Atomic Scale

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Structural Evolution Upon Annealing of Multi-Layer Si/Fe Thin Films Prepared by Magnetron Sputtering

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.1161 ◽

2007 ◽

Vol 561-565 ◽

pp. 1161-1164

Author(s):

Xiao Na Li ◽

Bing Hu ◽

Chuang Dong ◽

Xin Jiang

Keyword(s):

Thin Films ◽

Magnetron Sputtering ◽

Room Temperature ◽

Structural Evolution ◽

Radio Frequency Magnetron Sputtering ◽

Transmission Electron ◽

Direct Band ◽

The Stability ◽

Sputtering System

Fe/Si multi-layer films were fabricated on Si (100) substrates utilizing radio frequency magnetron sputtering system. Si/β-FeSi2 structure was found in the films after the deposition. Structural characterization of Fe-silicide sample was performed by transmission electron microscopy, to explore the dependence of the microstructure of β-FeSi2 film on the preparation parameters. It was found that β-FeSi2 particles were formed after the deposition without annealing, whose size is less than 20nm ,with a direct band-gap of 0.94eV in room temperature. After annealing at 850°C, particles grow lager, however the stability of thin films was still good.

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Structural Characterization of a Cage Ligand Fragmentation Reaction

Australian Journal of Chemistry ◽

10.1071/ch9940181 ◽

1994 ◽

Vol 47 (1) ◽

pp. 181 ◽

Cited By ~ 7

Author(s):

JM Harrowfield ◽

AM Sargeson ◽

BW Skelton ◽

AH White

Keyword(s):

Single Crystal ◽

Structural Characterization ◽

Room Temperature ◽

Fragmentation Reaction ◽

X Ray ◽

Nitrogen Donor ◽

Crystal Structural

The room temperature X-ray single-crystal structural characterization of a protonated copper(II) complex of a ligand artefact, L′, of L = N-Me6sar (described in an accompanying paper) is recorded, the new ligand L′ being generated formally by elimination of a CH2CH2 bridge between a pair of nitrogen donor atoms of L. The complex, [ ClCu (H2L′) (ClO4)3.2H2O, is orthorhombic, Pccn , a 22.528(7), b 10.544(3), c 13.748(6) Ǻ, Z = 4 formula units, R being 0.053 for 1133 independent 'observed' [I > 3σ(I)] reflections. The cation, containing five-coordinate square-pyramidal ClCuN4 copper, is disposed with the Cu- Cl bond [2.458(3)Ǻ] lying on a crystallographic 2 axis; Cu-N distances are 2.094(8) and 2.093(8)Ǻ.

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Structural evolution and characterization of crystallized luminescent Sr1−xCaxWO4 solid-solution films prepared by an electrochemical method at room temperature

Journal of Applied Physics ◽

10.1063/1.366665 ◽

1998 ◽

Vol 83 (1) ◽

pp. 518-523 ◽

Cited By ~ 9

Author(s):

Woo-Seok Cho ◽

Masahiro Yoshimura

Keyword(s):

Solid Solution ◽

Electrochemical Method ◽

Room Temperature ◽

Structural Evolution

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In situ tuning of magnetization via topotactic lithium insertion in ordered mesoporous lithium ferrite thin films

Journal of Materials Chemistry C ◽

10.1039/c6tc02731h ◽

2016 ◽

Vol 4 (38) ◽

pp. 8889-8896 ◽

Cited By ~ 13

Author(s):

Christian Reitz ◽

Christian Suchomski ◽

Di Wang ◽

Horst Hahn ◽

Torsten Brezesinski

Keyword(s):

Thin Films ◽

Room Temperature ◽

Lithium Ferrite ◽

Lithium Insertion ◽

Ordered Mesoporous ◽

Ferrite Thin Films

Topotactic Li insertion into polymer-templated mesostructured α-LiFe5O8 thin films allows for the intriguing possibility of tuning the magnetization at room temperature.

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