Journal Article10.1134/S1027451018040158
On Enhancement of the Adsorption-Layer Effect at the Metallic Electrode−Liquid Electrolyte Interface in Specular Neutron Reflectometry Experiments
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TL;DR: In this article, the specular reflection curves obtained in neutron reflectometry experiments at the electrochemical interfaces between a metallic electrode and liquid electrolyte containing Li+ ions during their operation were analyzed.
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Abstract: The possibilities for optimizing the substrate/electrode/electrolyte structure are considered in order to obtain the maximum change in the specular-reflection curves obtained in neutron reflectometry experiments at the electrochemical interfaces between a metallic electrode and liquid electrolyte containing Li+ ions during their operation. The characteristic relations between the scattering length densities of the components, for which the reflection curves most fully provide information about the structure of the solid electrolyte interphase layer formed on the electrode surface during the charge–discharge processes, are determined and analyzed.
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Citations
The Concept of Fractals in the Structural Analysis of Nanosystems: A Retrospective Look and Prospects
TL;DR: In this article, it is shown that the peculiarities in the distribution of nanosystems over their fractal dimensions are related to the mechanisms of growth and aggregation of the dispersed phase.
Optimization of the Initial Interface Configuration for In-Situ Neutron Reflectometry Experiments
Viktor I. Petrenko,Viktor I. Petrenko,Ye. N. Kosiachkin,Ye. N. Kosiachkin,Leonid A. Bulavin,Mikhail V. Avdeev +5 more
TL;DR: In this article, the initial structure of the solid-liquid interface for in-situ neutron reflectometry experiments to maximize slight changes in the reflectometry curves associated with small changes in interface configuration is considered.
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Structural Studies of Electrochemical Interfaces with Liquid Electrolytes Using Neutron Reflectometry: Experimental Aspects
Ye. N. Kosiachkin,Ye. N. Kosiachkin,I. V. Gapon,I. V. Gapon,A. A. Rulev,A. A. Rulev,E. E. Ushakova,E. E. Ushakova,D. Merkel,Leonid A. Bulavin,Mikhail V. Avdeev,Daniil M. Itkis,Daniil M. Itkis +12 more
TL;DR: In this article, the authors address current issues concerning the development of methods of neutron reflectometry in the specular reflection mode for investigating model planar interfaces between solid electrodes and liquid electrolytes.
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References
A review of the features and analyses of the solid electrolyte interphase in Li-ion batteries
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Direct Determination of Solid-Electrolyte Interphase Thickness and Composition as a Function of State of Charge on a Silicon Anode
Gabriel M. Veith,Mathieu Doucet,J. Kevin Baldwin,Robert L. Sacci,Tyler M. Fears,Yongqiang Wang,James F. Browning +6 more
TL;DR: In this article, the thickness and chemistry of the solid-electrolyte interphase (SEI) layer grown on a silicon anode as a function of state of charge and during cycling were determined.
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Evaluating the solid electrolyte interphase formed on silicon electrodes: a comparison of ex situ X-ray photoelectron spectroscopy and in situ neutron reflectometry
Tyler M. Fears,Mathieu Doucet,James F. Browning,Jon K. Baldwin,Jeffrey G. Winiarz,Helmut Kaiser,Haskell Taub,Robert L. Sacci,Gabriel M. Veith +8 more
TL;DR: The data show that SEI expansion and contraction (breathing) during electrochemical cycling were observed via both techniques; however, ex situ XPS suggests that the SEI thickness increases during Si lithiation and decreases during delithiation, while in situ NR suggests the opposite.
Direct measurement of the chemical reactivity of silicon electrodes with LiPF6-based battery electrolytes
Gabriel M. Veith,Loïc Baggetto,Robert L. Sacci,Raymond R. Unocic,Wyatt E. Tenhaeff,James F. Browning +5 more
TL;DR: This work reports the first direct measurement of the extent of the spontaneous non-electrochemically driven reaction between a lithium ion battery electrode surface (Si) and a liquid electrolyte (1.2 M LiPF6-3 :’7 wt% ethylene carbonate’: dimethyl carbonate).
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