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Electrochemical Characterization of Tin Quantum Dots Grown on a Carbon Nanotube Mat as an Anode of Batteries for Medical Applications

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Tin (Sn) quantum dots (QDs) were fabricated on carbon nanotube mats by O2 plasma and a subsequent electrodeposition as anode materials for lithium rechargeable batteries. This nanofabrication process may be compatible with a complementary metal-oxide-semiconductor (CMOS) process, therefore, this anode material can be used for micro-batteries. Lithium (Li) can be inserted reversibly within most carbonaceous materials. Chemical vapor deposition (CVD) by using the precursor of CH4 were employed for fabrication of carbon nanotube (CNT) mats resulting in high surface area of anodes. Sn QDs grown on the CNT mats is improving cyclic performance of anodes due to high surface area of CNT matrix with Sn quantum dots and high specific capacity of Sn. The electrochemical characterization reveals that the discharge capacity of about 400 mA/g is maintained after 20 cycles. The microstructure of Sn QDs was investigated by scanning electron microscopy and X-ray diffraction.
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Keywords: CARBON NANOTUBE MAT; LITHIUM RECHARGEABLE BATTERIES; QUANTUM DOTS

Document Type: Short Communication

Publication date: June 1, 2010

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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