Kolb, Robert ; Fasel, Claudia ; Liebau-Kunzmann, Verena ; Riedel, Ralf (2006)
SiCN/C-ceramic composite as anode material for lithium ion batteries.
In: Journal of the European Ceramic Society, 26 (16)
doi: 10.1016/j.jeurceramsoc.2006.01.009
Article, Bibliographie
Abstract
The choice of electrode and electrolyte materials to design lithium batteries is limited due to the chemical reactivity of the used materials during the intercalation/deintercalation process. Amorphous silicon carbonitride (SiCN) ceramics are known to be chemically stable in corrosive environments and exhibit disordered carbonaceous regions making it potentially suitable to protect graphite from exfoliation. The material studied in this work was synthesized by mixing commercial graphite powder with the crosslinked polysilazane VL20®. Pyrolysis of the polymer/graphite compound at appropriate temperatures in inert argon atmosphere resulted in the formation of an amorphous SiCN/graphite composite material. First electrochemical investigations of pure SiCN and of the SiCN/C composite are presented here. A reversible capacity of 474 mA hg−1 was achieved with a sample containing 25 wt% VL20® and 75 wt% graphite. The measured capacity exceeds that of the used graphite powder by a factor of 1.3 without any fading over 50 cycles.
| Item Type: | Article |
|---|---|
| Erschienen: | 2006 |
| Creators: | Kolb, Robert ; Fasel, Claudia ; Liebau-Kunzmann, Verena ; Riedel, Ralf |
| Type of entry: | Bibliographie |
| Title: | SiCN/C-ceramic composite as anode material for lithium ion batteries |
| Language: | English |
| Date: | March 2006 |
| Publisher: | Elsevier Science Publishing |
| Journal or Publication Title: | Journal of the European Ceramic Society |
| Volume of the journal: | 26 |
| Issue Number: | 16 |
| DOI: | 10.1016/j.jeurceramsoc.2006.01.009 |
| Abstract: | The choice of electrode and electrolyte materials to design lithium batteries is limited due to the chemical reactivity of the used materials during the intercalation/deintercalation process. Amorphous silicon carbonitride (SiCN) ceramics are known to be chemically stable in corrosive environments and exhibit disordered carbonaceous regions making it potentially suitable to protect graphite from exfoliation. The material studied in this work was synthesized by mixing commercial graphite powder with the crosslinked polysilazane VL20®. Pyrolysis of the polymer/graphite compound at appropriate temperatures in inert argon atmosphere resulted in the formation of an amorphous SiCN/graphite composite material. First electrochemical investigations of pure SiCN and of the SiCN/C composite are presented here. A reversible capacity of 474 mA hg−1 was achieved with a sample containing 25 wt% VL20® and 75 wt% graphite. The measured capacity exceeds that of the used graphite powder by a factor of 1.3 without any fading over 50 cycles. |
| Uncontrolled Keywords: | Precursors-organic,Mechanical properties, Glass, Poisson's ratio, SiCN/C, Batteries |
| Additional Information: | SFB 595 A4 |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids DFG-Collaborative Research Centres (incl. Transregio) DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres 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 |
| Date Deposited: | 04 Aug 2011 12:08 |
| Last Modified: | 18 Dec 2018 12:18 |
| PPN: | |
| Funders: | We gratefully acknowledge the financial support by the Deutsche Forschungsgemeinschaft (DFG), Bonn, Germany (SFB 595/A4). |
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