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Title: Performance Enhancement of Tin Antimonide Anodes towards the Achievement of All Solid State Batteries
Researcher: Lakshmi D
Guide(s): Nalini B
Keywords: Li ion Batteries
Solid Electrolytes
Tin Antimonide
University: Avinashilingam Deemed University For Women
Completed Date: 09.10.2018
Abstract: Among various energy storage devices, Li-ion batteries (LIBs) are commercially newlinesuccessful candidates in the market. In spite of all the potential possibilities that could be newlineachieved with present LIB systems, presence of few unsettled problems is ruinous to its newlineperformance, such as flammable organic electrolyte, dendrite formation. To address the newlinetechnical issues with Li ion batteries, the limiting factor, organic liquid electrolyte is replaced with newlinesolid state electrolyte in the present research work. Further to ensure the chemical compatibility, newlineit is assumed that interface modification can be a solution to overcome the problems such as newlineinhomogeneous interface between electrode and SSE materials. newlineFor all solid state Li-ion battery (ASSLIB), perovskite Lithium Lanthanum Titanate newline(LLTO) is identified as the best solid electrolyte material providing high Li ion conductivity at newlineroom temperature. The microwave assisted sol-gel synthesized LLTO is found to deliver ionic newlineconductivity in the range of 1.05*10-3 Scm-1 at room temperature. Based on vast literature newlinesurvey, tin antimony alloy (SnSb- theoretical capacity 995 mAhg-1) anodes are preferred for newlineASSLIB. The SnSb is prepared in the composition SnxSby (x=2-4;y=3-5) by co-precipitation newlinetechnique. In addition to different characteristics, the important requirement for a battery newlinematerial-reversibility is ensured with electrochemical reversibility analysis. In line with this, newlinevarious attempts have been made to enhance the electrical and electrochemical properties of newlineSn2Sb3 such as microwave treatment, and doping. Due to the promising material performance, newlinebattery is assembled with microwave treated Sn4Sb5 anode, microwave sintered LLTO newlineelectrolyte and LiFePO4 cathode. Film coating and pellet geometries have been employed for newlinethe full cell assembly. The electrochemical performances seem to be very underprivileged due newlineto the slow kinetics of the charge carriers in solid medium. Among various attempts like polymer newlinecoating, active metal layer coating, changing the substrates
Pagination: 219 p.
Appears in Departments:Department of Physics

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01_title.pdfAttached File16.43 kBAdobe PDFView/Open
02_certificate.pdf7.54 kBAdobe PDFView/Open
03_declaration.pdf7.63 kBAdobe PDFView/Open
04_acknowledgement.pdf18.5 kBAdobe PDFView/Open
05_contents.pdf12.47 kBAdobe PDFView/Open
06_list of tables_and_figures.pdf33.97 kBAdobe PDFView/Open
08_symbols_and_constants.pdf32 kBAdobe PDFView/Open
09_chapter_i.pdf1.92 MBAdobe PDFView/Open
10_chapter_ii.pdf1.4 MBAdobe PDFView/Open
11_chapter_iii.pdf1.32 MBAdobe PDFView/Open
12_chapter_iv.pdf40.4 MBAdobe PDFView/Open
13_chapter_v.pdf62.88 kBAdobe PDFView/Open
14_bibliography.pdf177.75 kBAdobe PDFView/Open

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