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MPCVD Manufactured Silicon Based Anodes Compatibility with New Generation Imidazole Salts Based Electrolytes

Anna Bitner

Abstract

The main objective of the thesis was to verify the application of MPCVD (Microwave Plasma Chemical Deposition) technique in manufacturing nanostructured Si/C anodes. The proposed method seem to be an interesting alternative as a fast, one step, energy, time and materials saving technique for production of different materials with graphitic carbon functional matrix. This method was previously used in active Li (ion) cathodic materials (LiFePO4 and 1LiNi 1/3Co1/3Mn1/3O2 graphite coatings proceses, Sn/C2, NiO/C anode manufacturing, carbon fibers formation3 and Pt/C 4 catalytic layers for fuel cells. Recently patent was issued and assigned for MPCVD Sn/C anode manufacturing process. For nanosilicon anodes the electrodes obtained 1-phenyl-2-trimethylsilylacetylene were successfully obtained tested. Figure.2. presents the cycling performance of Si/C anode against lithium metal electrode in 1M LiTDI EC/DMC 1:2 electrolyte at room temperature. Si/C showed the lowest capacity fading and superior properties over 100 cycles when compared to the analoque graphite and Sn anodes. Figure 1.1. Charge efficiency vs. cycle number for three types anodes obtained using MPCVD 4 Consequently in these studies we selected triethoxy(octyl)silane trying to obtain Si/C composite electrodes in newly constructed microwave plasma set up and test it mostly in half cell geometry with presence of LiTDI based electrolytes (which is another novelty aspect of this Master project). Synthesis and characterization of the Si/C layers were done mostly at Warsaw University of Technology. Preliminary electrochemical characterization were done at University of Uppsala. I am personally grateful to Professor K. Edstrom and her group for help, discussion and support in this part of my diploma. First part of Master Diploma consist theoretical introduction to the subject of studies. Second part describes variety of experimental techniques used in the thesis. Third part is a description of results obtained during Master project. Thesis is concluded in the fourth final part of the thesis.
Record ID
WUT43c6d8efc50b4d4dadded02fe9945105
Diploma type
Master of Science
Author
Anna Bitner (FC/CofIC) Anna Bitner,, Chair Of Inorganic Chemistry (FC/CofIC)Faculty of Chemistry (FC)
Title in Polish
-
Supervisor
Marek Marcinek (FC/CofIC) Marek Marcinek,, Chair Of Inorganic Chemistry (FC/CofIC)Faculty of Chemistry (FC)
Certifying unit
Faculty of Chemistry (FC)
Affiliation unit
Chair Of Inorganic Chemistry And Solid State Technology (FC/CofIC)
Study subject / specialization
, Technologia Chemiczna
Language
(en) English
Status
Finished
Defense Date
11-09-2012
Issue date (year)
2012
Keywords in Polish
-
Keywords in English
-
Abstract in Polish
-
File
  • File: 1
    Bitner_thesis_4092012.pdf
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Uniform Resource Identifier
https://repo.pw.edu.pl/info/master/WUT43c6d8efc50b4d4dadded02fe9945105/
URN
urn:pw-repo:WUT43c6d8efc50b4d4dadded02fe9945105

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