Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/75540
Title: Efficiency threshold of carbon layer growth in Li4Ti5O12/C composites
Authors: Pelegov, D. V.
Koshkina, A. A.
Pryakhina, V. I.
Gorshkov, V. S.
Issue Date: 2019
Publisher: Electrochemical Society Inc.
Citation: Efficiency threshold of carbon layer growth in Li4Ti5O12/C composites / D. V. Pelegov, A. A. Koshkina, V. I. Pryakhina et al. // Journal of the Electrochemical Society. — 2019. — Vol. 166. — Iss. 3. — P. A5019-A5024.
Abstract: The core-shell morphology study is crucial for composite materials, comprised of a low conductive core with a highly conductive thin carbon shell. The study analyzed carbon morphology evolution for the two series of Li4Ti5O12/C samples with carbon content increasing from 0.9 to 5.6 wt%. The conventional X-Ray Photoelectron Spectroscopy (XPS) study allowed us to conclude about the efficiency threshold of carbon layer growth over lithium titanate core for two carbon deposition methods - both sucrose and acetylene decompositions. Although the carbon layer thickness is increasing with carbon concentration growth in LTO/C composites, the efficiency of carbon coverage was shown to decrease with the threshold carbon concentrations about 1-2%. The chemical bonding analysis based on the same XPS data was used for C@LTO interface characterization. The proposed approach can be used for optimization of producing different composites with core-shell structure (carbon-based composites, materials with protective layers, and materials with gradient core-shell structure). © The Author(s) 2018. Published by ECS.
Keywords: CHEMICAL ANALYSIS
CHEMICAL BONDS
CONDUCTIVE MATERIALS
EFFICIENCY
LITHIUM COMPOUNDS
X RAY PHOTOELECTRON SPECTROSCOPY
ACETYLENE DECOMPOSITION
CARBON BASED COMPOSITES
CARBON CONCENTRATIONS
CORE SHELL STRUCTURE
CORE-SHELL MORPHOLOGIES
INTERFACE CHARACTERIZATION
MORPHOLOGY EVOLUTION
X-RAY PHOTOELECTRON SPECTROSCOPY STUDIES
SHELLS (STRUCTURES)
URI: http://hdl.handle.net/10995/75540
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85063096330
WOS ID: 000449167100001
PURE ID: 8338555
ISSN: 0013-4651
DOI: 10.1149/2.0031903jes
metadata.dc.description.sponsorship: This work was performed within the state task no. 3.6115.2017/8.9 of the Ministry of Education and Science of the Russian Federation and supported by Government of the Russian Federation (Act 211, Agreement 02.A03.21.0006). The equipment of the Ural Center for Shared Use “Modern Nanotechnology” UrFU and JSC Eliont were used. Authors thanks Vasily Lebedev and Alexander Esin for fruitful discussions.
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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