Surface analyses of In–V oxide films aged electrochemically by Li insertion reactions

Coluzza, C.; Cimino, N.; Decker, F.; Santo, Giovanni Di; Liberatore, M.; Zanoni, R.; Bertolo, M.; Rosa, S. La

doi:10.1039/b306800e

Cited by 6 publications

(3 citation statements)

References 42 publications

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“…After lithiation to 0.01 V, the composite peaks at 20–30 eV and 3–8 eV correspond entirely to MOs of carbonate. New peaks at ∼10.0 and ∼13.0 eV are representative of the C–O bond in Li 2 CO 3 . , The presence of Li 2 CO 3 is thus confirmed to be the major component of the SEI layer like observed on other anode materials in the lithiated state. ,,, …”

Section: Resultsmentioning

confidence: 65%

“…New peaks at ∼10.0 and ∼13.0 eV are representative of the C−O bond in Li 2 CO 3 . 50,51 The presence of Li 2 CO 3 is thus confirmed to be the major component of the SEI layer like observed on other anode materials in the lithiated state. 5,11,17,18 After delithiation at 1.2 and 1.8 V, the XP Fe 2p and Fe 3p core levels are still fully attenuated by the SEI layer, which precludes any discussion of the deconversion mechanism.…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

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Combined Surface and Electrochemical Study of the Lithiation/Delithiation Mechanism of the Iron Oxide Thin-Film Anode for Lithium-Ion Batteries

et al. 2013

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Iron oxide (mostly α-Fe 2 O 3 ) model thin-film electrodes were prepared by thermal oxidation of pure metal iron substrates at 300 ± 5 °C in air and used for comprehensive investigation of the lithiation/delithiation mechanisms of anode material undergoing an electrochemical conversion reaction with lithium ions. Surface (X-ray photoelectron spectroscopy (XPS) and time-of-flight secondary ion mass spectrometry (ToF-SIMS)) and electrochemical (cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS)) analytical techniques were combined. The results show that intercalation of Li in the Fe 2 O 3 matrix and solid electrolyte interphase (SEI) layer formation both precede conversion to metallic iron and Li 2 O upon lithiation. Depth profile analysis evidences stratification of the converted thin-film electrode into fully and partially lithiated outer and inner parts, respectively, due to mass transport limitation. The SEI layer has a stable composition (Li 2 CO 3 with minor ROCO 2 Li) but dynamically increases/decreases in thickness upon lithiation/delithiation. Conversion, proceeding mostly in the outer part of the electrode, causes material swelling accompanied by SEI layer thickening. Upon delithiation, lithium is trapped in the deconverted electrode subjected to shrinking, and the SEI layer mostly decomposes and reduces in thickness after deconversion. The nonreversibility of both conversion and surface passivation mechanisms is demonstrated.

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Section: Resultsmentioning

confidence: 65%

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

Combined Surface and Electrochemical Study of the Lithiation/Delithiation Mechanism of the Iron Oxide Thin-Film Anode for Lithium-Ion Batteries

et al. 2013

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“…However, so far the UHV experiments rely on the in situ deposition on layered chalcogenide substrates to prepare well-defined samples for rigorous surface analysis. There are also very few studies of electrochemically intercalated or deintercalated electrodes that have been analyzed after emersion and transfer into UHV. − However, the problems related to remaining contaminations and transfer-related modifications have not been solved in a satisfying way and, therefore, only a limited characterization of the detailed changes in electronic structure seems possible.…”

Section: Introductionmentioning

confidence: 99%

Origin of the Electrochemical Potential in Intercalation Electrodes: Experimental Estimation of the Electronic and Ionic Contributions for Na Intercalated into TiS₂

2004

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The use of photoelectron spectroscopy for the evaluation of the electrochemical potentials in intercalation phases is presented. An in situ prepared thin film electrochemical cell has been used to relate electrochemical quantities as the change of electrochemical potential with electronic properties measured in UHV, as well as with the change of the chemical potential of the electrons, which is equivalent to the position of the Fermi level inside the solid. The changes observed in photoemission data with intercalation are compared to galvanostatic experiments obtained in electrochemical setups using the same sample. From a comparison of the results it is possible to estimate the ionic and electronic contribution to the battery voltage. For Na intercalated into TiS 2 the results indicate a contribution of the electronic component to the battery voltage of at least 60%.

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MEASUREMENT METHODS | Electronic and Chemical Properties: X-Ray Photoelectron Spectroscopy

Tonti

Zanoni²

2009

Encyclopedia of Electrochemical Power Sources

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Surface analyses of In–V oxide films aged electrochemically by Li insertion reactions

Cited by 6 publications

References 42 publications

Combined Surface and Electrochemical Study of the Lithiation/Delithiation Mechanism of the Iron Oxide Thin-Film Anode for Lithium-Ion Batteries

Combined Surface and Electrochemical Study of the Lithiation/Delithiation Mechanism of the Iron Oxide Thin-Film Anode for Lithium-Ion Batteries

Origin of the Electrochemical Potential in Intercalation Electrodes: Experimental Estimation of the Electronic and Ionic Contributions for Na Intercalated into TiS₂

MEASUREMENT METHODS | Electronic and Chemical Properties: X-Ray Photoelectron Spectroscopy

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Surface analyses of In–V oxide films aged electrochemically by Li insertion reactions

Cited by 6 publications

References 42 publications

Combined Surface and Electrochemical Study of the Lithiation/Delithiation Mechanism of the Iron Oxide Thin-Film Anode for Lithium-Ion Batteries

Combined Surface and Electrochemical Study of the Lithiation/Delithiation Mechanism of the Iron Oxide Thin-Film Anode for Lithium-Ion Batteries

Origin of the Electrochemical Potential in Intercalation Electrodes: Experimental Estimation of the Electronic and Ionic Contributions for Na Intercalated into TiS2

MEASUREMENT METHODS | Electronic and Chemical Properties: X-Ray Photoelectron Spectroscopy

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Origin of the Electrochemical Potential in Intercalation Electrodes: Experimental Estimation of the Electronic and Ionic Contributions for Na Intercalated into TiS₂