Temperature-induced structural and chemical changes of ultrathin ethylene carbonate films on Cu(111)

2014 ◽  
Vol 16 (23) ◽  
pp. 11191-11195 ◽  
Author(s):  
Florian Buchner ◽  
Hanieh Farkhondeh ◽  
Maral Bozorgchenani ◽  
Benedikt Uhl ◽  
R. Jürgen Behm
Keyword(s):  
Photoelectron Spectroscopy ◽  
Variable Temperature ◽  
Ethylene Carbonate ◽  
Ultrahigh Vacuum ◽  
Li Ion Battery ◽  
Chemical Changes ◽  
X Ray ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy ◽  
Li Ion

The interaction of the Li-ion battery solvent ethylene carbonate (EC) with Cu(111) was investigated by scanning tunnelling microscopy (STM) and variable temperature X-ray photoelectron spectroscopy (XPS) under ultrahigh vacuum (UHV) conditions.

Adsorption and reaction of sub-monolayer films of an ionic liquid on Cu(111)

2014 ◽  
Vol 50 (62) ◽  
pp. 8601-8604 ◽  
Author(s):  
Benedikt Uhl ◽  
Florian Buchner ◽  
Stephan Gabler ◽  
Maral Bozorgchenani ◽  
R. Jürgen Behm
Keyword(s):  
Ionic Liquid ◽  
Photoelectron Spectroscopy ◽  
Ultrahigh Vacuum ◽  
Scanning Tunnelling Microscopy ◽  
Monolayer Films ◽  
X Ray ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy ◽  
Reactive Interaction

The reactive interaction of the ionic liquid 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide [BMP][TFSA] with Cu(111) was investigated by scanning tunnelling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) under ultrahigh vacuum (UHV) conditions.

Article

1998 ◽  
Vol 76 (11) ◽  
pp. 1559-1563
Author(s):  
J Hugh Horton ◽  
Johann Rasmusson ◽  
Joseph G Shapter ◽  
Peter R Norton
Keyword(s):  
Chemical Vapour Deposition ◽  
Photoelectron Spectroscopy ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Organometallic Compounds ◽  
Vapour Phase ◽  
Scanning Tunnelling Microscopy ◽  
X Ray ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy

The adsorption of the organometallic compounds bis(hexafluoroacetylacetonato)zinc(II) (Zn(hfac)2) and bis(hexafluoroacetylacetonato)nickel(II) (Ni(hfac)2) on the surface of Si(111)-7×7 were studied by a combination of scanning tunnelling microscopy (STM) and X-ray photoelectron spectroscopy (XPS). These compounds are analogues of the compound bis(hexafluoroacetylacetonato)copper(II), which is an important precursor for the chemical vapour deposition of copper that we have previously studied. Both XPS and STM results indicate that the Zn(hfac)2 is adsorbed intact on the surface, and remains intact on the surface at temperatures up to 300 K. The XPS shows a transition from a physisorbed state to a chemisorbed state at temperatures between 160 and 300 K. At higher temperatures Zn(hfac)2 decomposed to form Zn and fluorocarbon fragments. The metal component diffused into the substrate. The Ni(hfac)2 complex could not be successfully adsorbed on the Si surface: it was shown that this was due to decomposition of the molecule in the vapour phase, probably due to the higher temperatures needed to evaporate this relatively involatile compound.Key words: scanning tunnelling microscopy, chemical vapour deposition, zinc, copper.

Synthesis of MoO3/V2O5/C Composite as Novel Anode for Li-Ion Battery Application

2020 ◽  
Vol 20 (5) ◽  
pp. 2911-2916
Author(s):  
Zhen Zhang ◽  
Xiao Chen ◽  
Guangxue Zhang ◽  
Chuanqi Feng
Keyword(s):  
Electron Microscopy ◽  
Photoelectron Spectroscopy ◽  
Specific Capacity ◽  
Lithium Ion ◽  
Li Ion Battery ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Li Ion ◽  
Battery Application

The MoO3/V2O5/C, MoO3/C and V2O5/C are synthesized by electrospinning combined with heat treatment. These samples are characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy and thermogravimetric analysis (TG) techniques. The results show that sample MoO3/V2O5/C is a composite composed from MoO3, V2O5 and carbon. It takes on morphology of the nanofibers with the diameter of 200~500 nm. The TG analysis result showed that the carbon content in the composite is about 40.63%. Electrochemical properties for these samples are studied. When current density is 0.2 A g−1, the MoO3/V2O5/C could retain the specific capacity of 737.6 mAh g−1 after 200 cycles and its coulomb efficiency is 92.99%, which proves that MoO3/V2O5/C has better electrochemical performance than that of MoO3/C and V2O5/C. The EIS and linear Warburg coefficient analysis results show that the MoO3/V2O5/C has larger Li+ diffusion coefficient and superior conductivity than those of MoO3/C or V2O5/C. So MoO3/V2O5/C is a promising anode material for lithium ion battery application.

The growth and thermal properties of Au deposited on Rh(111): formation of an ordered surface alloy

2016 ◽  
Vol 18 (36) ◽  
pp. 25230-25240 ◽  
Author(s):  
László Óvári ◽  
András Berkó ◽  
Gábor Vári ◽  
Richárd Gubó ◽  
Arnold Péter Farkas ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Low Energy ◽  
Ion Scattering ◽  
X Ray ◽  
Low Energy Ion Scattering ◽  
Resolution Electron ◽  
Ion Scattering Spectroscopy ◽  
Scanning Tunnelling ◽  
Tunnelling Microscopy ◽  
Electron Energy Loss

Scanning tunnelling microscopy (STM), low energy ion scattering spectroscopy (LEIS), X-ray photoelectron spectroscopy (XPS) and high resolution electron energy loss spectroscopy (HREELS) were applied for studying Au deposited on the Rh(111) surface.

scholarly journals Binder Free SnO2-CNT Composite as Anode Material for Li-Ion Battery

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Dionne Hernandez ◽  
Frank Mendoza ◽  
Emmanuel Febus ◽  
Brad R. Weiner ◽  
Gerardo Morell
Keyword(s):  
Electron Microscopy ◽  
Photoelectron Spectroscopy ◽  
Tin Dioxide ◽  
Composite Films ◽  
Volume Ratio ◽  
Lithium Ion ◽  
Chemical Vapor ◽  
Li Ion Battery ◽  
X Ray ◽  
Li Ion

Tin dioxide-carbon nanotube (SnO2-CNT) composite films were synthesized on copper substrates by a one-step process using hot filament chemical vapor deposition (HFCVD) with methane gas (CH4) as the carbon source. The composite structural properties enhance the surface-to-volume ratio of SnO2demonstrating a desirable electrochemical performance for a lithium-ion battery anode. The SnO2and CNT interactions were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared-attenuated total reflectance (ATR-FTIR) spectroscopy. Comprehensive analysis of the structural, chemical, and electrochemical properties reveals that the material consists of self-assembled and highly dispersed SnO2nanoparticles in CNT matrix. The process employed to develop this SnO2-CNT composite film presents a cost effective and facile way to develop anode materials for Li-ion battery technology.

The solid state conversion reaction of epitaxial FeF2(110) thin films with lithium studied by angle-resolved X-ray photoelectron spectroscopy

2015 ◽  
Vol 17 (23) ◽  
pp. 15218-15225 ◽  
Author(s):  
Ryan Thorpe ◽  
Sylvie Rangan ◽  
Ryan Whitcomb ◽  
Ali C. Basaran ◽  
Thomas Saerbeck ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solid State ◽  
High Purity ◽  
Photoelectron Spectroscopy ◽  
Li Ion Battery ◽  
Conversion Reaction ◽  
X Ray ◽  
Li Ion ◽  
Battery Discharge

An epitaxial FeF2(110) thin film was exposed to Li as a high-purity analogue of a Li-ion battery discharge. The stoichiometry and morphology of the film were then characterized by ARXPS.

scholarly journals Analysis of nanostructured cobalt ion beam-modified Ge surface for high capacity Li-ion battery anodes by X-ray photoelectron spectroscopy

2020 ◽  
Vol 1588 ◽  
pp. 012024
Author(s):  
N M Lyadov ◽  
S M Khantimerov ◽  
I V Yanilkin ◽  
I A Faizrakhmanov ◽  
V V Bazarov ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Ion Beam ◽  
High Capacity ◽  
Li Ion Battery ◽  
Cobalt Ion ◽  
X Ray ◽  
Li Ion
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