Anodes for lithium ion batteries: Revisiting carbon & looking beyond silicon

Dr. T. Prem Kumar

Senior Principal Scientist CSIR – CECRI Karaikudi

About Speaker

Dr. T. Prem Kumar is currently senior principal scientist at CSIR-CECRI, Karaikudi. He has received his PhD in Electrochemistry from IISc Banglore in the year 1989. His areas of expertise include Lithium-ion batteries – polymer gel electrolytes particularly based on PAN, PVdF, PVC and PMMA; preparation of polymer membranes by phase separation technique; composite polymer membranes; doped forms of lithium manganese oxides, lithium cobalt oxides, lithium nickel oxides; nano-cathode materials; long-cycling coated cathodes; pyrolyzed carbonaceous materials; kish graphites; carbon nanotubes and metal-filled carbon nanotubes; tin nanoclusters; lithium-inserting intermetallics; biomineralization as applied to battery materials; biological route to nanometal composites; LiFePO4 cathodes; Li[Ni1/3Co1/3Mn1/3]O2 and variations thereof; silicon-based anodes. Some of his notable achievements include MRSI Medal of the Materials Research Society of India, reviewer of Journal of the Electrochemical Society; Electrochemistry Communications; Journal of Power Sources; Journal of Materials Science; Materials Chemistry and Physics; Materials Research Bulletin; Bulletin of Electrochemistry; Bulletin of Materials Science and also a Member of doctoral committees at the Kalasalingam University and VIT University.

Talk Abstract

Dr. Prem Kumar talked about the anode materials used in the Li-ion batteries on the topic of revisiting the carbon. He talked about the carbon as an anode material and its effects on the cycles of battery in different forms of carbon like grapheme, carbon nano tubes etc. Along with natural carbon forms, he also discussed about the synthetic carbon forms which are made in labs artificially. After carbon, Silicon came into picture as an anode material by compromising on the some drawbacks of carbon. He discussed about the silicon as an anode material for batteries with nice pictures of silicon SEM and TEM. He also discussed about some limitations of carbon and silicon, and carbon silicon composite materials to overcome the limitations of the carbon and silicon and on what parameters need to compromise in silicon carbon composites as anode materials. In that composite he discussed about composites with different carbon forms also.

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