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SiOC(N)/Hard Carbon Composite Anodes for Na-Ion Batteries: Influence of Morphology on the Electrochemical Properties

Kaspar, Jan ; Storch, Mathias ; Schitco, Cristina ; Riedel, Ralf ; Graczyk-Zajac, Magdalena (2016)
SiOC(N)/Hard Carbon Composite Anodes for Na-Ion Batteries: Influence of Morphology on the Electrochemical Properties.
In: Journal of The Electrochemical Society, 163 (2)
doi: 10.1149/2.0391602jes
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Hard carbons derived from organic precursors glucose (G) and potato starch (PS) and composite materials derived from glucose blended with commercial preceramic polymers, namely polyorganosilazane (SiOC(N)/HC) and polyorganosiloxane (SiOC/HC) are synthesized and investigated with respect to their application as anode materials for Na-ion batteries. A strong correlation is found between the electrochemical performance and the porosity of the materials, as well as the elemental composition of the samples. Mesoporous hard carbon HCPS and the nonporous composite SiOC/HCG containing low amount of oxygen (<10 wt-%) present the highest reversible capacity of 262 mAhg−1 for HCPS and 201 mAhg−1 for SiOC/HCG and the best first cycle efficiency, namely 74% for HCPS and 65% for SiOC/HCG.

Typ des Eintrags: Artikel
Erschienen: 2016
Autor(en): Kaspar, Jan ; Storch, Mathias ; Schitco, Cristina ; Riedel, Ralf ; Graczyk-Zajac, Magdalena
Art des Eintrags: Bibliographie
Titel: SiOC(N)/Hard Carbon Composite Anodes for Na-Ion Batteries: Influence of Morphology on the Electrochemical Properties
Sprache: Englisch
Publikationsjahr: 2016
Verlag: ECS - The Electrochemical Society
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of The Electrochemical Society
Jahrgang/Volume einer Zeitschrift: 163
(Heft-)Nummer: 2
DOI: 10.1149/2.0391602jes
Kurzbeschreibung (Abstract):

Hard carbons derived from organic precursors glucose (G) and potato starch (PS) and composite materials derived from glucose blended with commercial preceramic polymers, namely polyorganosilazane (SiOC(N)/HC) and polyorganosiloxane (SiOC/HC) are synthesized and investigated with respect to their application as anode materials for Na-ion batteries. A strong correlation is found between the electrochemical performance and the porosity of the materials, as well as the elemental composition of the samples. Mesoporous hard carbon HCPS and the nonporous composite SiOC/HCG containing low amount of oxygen (<10 wt-%) present the highest reversible capacity of 262 mAhg−1 for HCPS and 201 mAhg−1 for SiOC/HCG and the best first cycle efficiency, namely 74% for HCPS and 65% for SiOC/HCG.

Freie Schlagworte: Anode, Hard Carbon, Polymer-derived ceramic, Porosity, Sodium-ion battery
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften
Hinterlegungsdatum: 13 Nov 2015 07:49
Letzte Änderung: 13 Nov 2015 07:49
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