TU Darmstadt / ULB / TUbiblio

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

Wilamowska, Monika and Graczyk-Zajac, Magdalena and Riedel, Ralf (2013):
Composite materials based on polymer-derived SiCN ceramic and disordered hard carbons as anodes for lithium-ion batteries.
244, In: Journal of Power Sources, Elsevier Science Publishing, pp. 80-86, ISSN 03787753, [Online-Edition: http://dx.doi.org/10.1016/j.jpowsour.2013.03.137],
[Article]

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 and Graczyk-Zajac, Magdalena and Riedel, Ralf
Title: Composite materials based on polymer-derived SiCN ceramic and disordered hard carbons as anodes for lithium-ion batteries
Language: English
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.

Journal or Publication Title: Journal of Power Sources
Volume: 244
Publisher: Elsevier Science Publishing
Uncontrolled Keywords: Hard carbons; SiCN ceramic; Composite anode materials; Lithium-ion batteries
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
Official URL: http://dx.doi.org/10.1016/j.jpowsour.2013.03.137
Additional Information:

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

Identification Number: doi:10.1016/j.jpowsour.2013.03.137
Funders: The authors acknowledge the financial support by the Deutsche Forschungsgemeinschaft (DFG), Bonn, Germany within SFB 595/A4 and SPP1473/JP8 programs.
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)

View Item View Item