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Assessing the reactivity of hard carbon anodes : linking material properties with electrochemical response upon sodium‐ and lithium‐ion storage

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Moon, Hyein, Zarrabeitia, Maider, Frank, Erik, Böse, Olaf, Enterría, Marina, Saurel, Damien, Hasa, Ivana and Passerini, Stefano (2021) Assessing the reactivity of hard carbon anodes : linking material properties with electrochemical response upon sodium‐ and lithium‐ion storage. Batteries & Supercaps, 4 (6). pp. 960-977. doi:10.1002/batt.202000322

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Official URL: https://doi.org/10.1002/batt.202000322

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Abstract

Hard carbon (HC) is the negative electrode (anode) material of choice for sodium‐ion batteries (SIBs). Despite its advantages in terms of cost and sustainability, a comprehensive understanding of its microstructure is not complete yet, thus hindering a rational design of high‐performance HC electrodes. In this study, rather than investigating how the precursor and synthesis method influence on the electrochemical properties of HC anodes, we examine the microstructure and surface chemistry of three optimized HC anodes obtained from different precursors by using different synthesis routes. The main goal is to evaluate the influence of the final materials properties (in their optimized state) on the electrochemical reactivity in lithium and sodium cells after a comprehensive structural characterization performed by means of X‐ray photoelectron spectroscopy (XPS), wide‐angle X‐ray scattering (WAXS), Raman spectroscopy, scanning electron microscopy (SEM), and gas sorption measurements. The different electrochemical performance observed in terms of cycling stability and rate capability, and the stability of the solid electrolyte interphase (SEI) formed on the various HCs have been comprehensively investigated. A correlation of the material properties with their electrochemical response upon sodium and lithium uptake and release is clarified. By comparing the Na‐ and Li‐ion storage behavior, a structure‐function relation is identified.

Item Type: Journal Article
Subjects: Q Science > QD Chemistry
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Sodium ion batteries, Anodes, Lithium ion batteries, Carbon, Electrolytes, Microstructure
Journal or Publication Title: Batteries & Supercaps
Publisher: Wiley
ISSN: 2566-6223
Official Date: June 2021
Dates:
DateEvent
June 2021Published
15 March 2021Available
1 March 2021Accepted
Volume: 4
Number: 6
Page Range: pp. 960-977
DOI: 10.1002/batt.202000322
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
TRANSITION (03XP0186)Bundesministerium für Bildung, Wissenschaft, Forschung und Technologiehttp://dx.doi.org/10.13039/501100010571
UNSPECIFIEDHermann-von-Helmholtz-Gemeinschaft Deutscher Forschungszentrenhttp://viaf.org/viaf/153269911
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