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Composite materials based on polymer-derived SiCN ceramic and disordered hard carbons as anodes for lithium-ion batteries

Wilamowska, Monika ; Graczyk-Zajac, Magdalena ; Riedel, Ralf (2013)
Composite materials based on polymer-derived SiCN ceramic and disordered hard carbons as anodes for lithium-ion batteries.
In: Journal of Power Sources, 244
doi: 10.1016/j.jpowsour.2013.03.137
Article, Bibliographie

Abstract

New composite materials based on polymer-derived SiCN ceramics and hard carbons were studied in view of its application as anodes for lithium-ion batteries. Two kinds of composites were prepared by pyrolysis of the preceramic polysilazane (HTT1800, Clariant) at 1000 °C in Ar atmosphere mixed with hard carbons derived from potato starch (HC_PS) or with a hard carbon precursor, namely potato starch (PS), denoted as HTT/HC_PS and HTT/PS composites, respectively. Thermal gravimetric analysis suggests possible reactions between the preceramic polymer and the carbon precursor. The HTT/PS composites contain higher amount of oxygen and appear to be more homogeneous than that of the HTT/HC_PS composite. Raman analysis confirms the presence of highly disordered carbon in the composites by the appearance of the well-pronounced D band at 1347 cm−1. The materials are amorphous with a significant fraction of single graphene sheets as confirmed by X-ray diffraction. The HTT/PS composite exhibits a high-recovered capacity (434 mAh g−1 when charging with a current of 36 mA g−1) and outstanding cyclability for 400 cycles even at high current rates (90 mAh g−1 when charging with 3600 mA g−1). These properties make the composite a candidate anode material for high power energy devices.

Item Type: Article
Erschienen: 2013
Creators: Wilamowska, Monika ; Graczyk-Zajac, Magdalena ; Riedel, Ralf
Type of entry: Bibliographie
Title: Composite materials based on polymer-derived SiCN ceramic and disordered hard carbons as anodes for lithium-ion batteries
Language: English
Date: 15 December 2013
Publisher: Elsevier Science Publishing
Journal or Publication Title: Journal of Power Sources
Volume of the journal: 244
DOI: 10.1016/j.jpowsour.2013.03.137
Abstract:

New composite materials based on polymer-derived SiCN ceramics and hard carbons were studied in view of its application as anodes for lithium-ion batteries. Two kinds of composites were prepared by pyrolysis of the preceramic polysilazane (HTT1800, Clariant) at 1000 °C in Ar atmosphere mixed with hard carbons derived from potato starch (HC_PS) or with a hard carbon precursor, namely potato starch (PS), denoted as HTT/HC_PS and HTT/PS composites, respectively. Thermal gravimetric analysis suggests possible reactions between the preceramic polymer and the carbon precursor. The HTT/PS composites contain higher amount of oxygen and appear to be more homogeneous than that of the HTT/HC_PS composite. Raman analysis confirms the presence of highly disordered carbon in the composites by the appearance of the well-pronounced D band at 1347 cm−1. The materials are amorphous with a significant fraction of single graphene sheets as confirmed by X-ray diffraction. The HTT/PS composite exhibits a high-recovered capacity (434 mAh g−1 when charging with a current of 36 mA g−1) and outstanding cyclability for 400 cycles even at high current rates (90 mAh g−1 when charging with 3600 mA g−1). These properties make the composite a candidate anode material for high power energy devices.

Uncontrolled Keywords: Hard carbons; SiCN ceramic; Composite anode materials; Lithium-ion batteries
Additional Information:

SFB 595 A4 16th International Meeting on Lithium Batteries (IMLB)

Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Zentrale Einrichtungen
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 595: Electrical fatigue > A - Synthesis > Subproject A4: Novel functional ceramics using anionic substitution in oxidic systems
11 Department of Materials and Earth Sciences > Material Science
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio)
Date Deposited: 16 Aug 2013 11:57
Last Modified: 21 Feb 2014 08:38
PPN:
Funders: The authors acknowledge the financial support by the Deutsche Forschungsgemeinschaft (DFG), Bonn, Germany within SFB 595/A4 and SPP1473/JP8 programs.
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