NDLI: Leak testing of carbon–tin nanocomposites by thermal analysis methods

Content Provider	Springer Nature Link
Author	Chojnacka, Agnieszka Molenda, Marcin Majda, Dorota Natkański, Piotr Dziembaj, Roman
Copyright Year	2016
Abstract	Electrode materials consisted of tin nanograins encapsulated in different origin carbon buffer matrix (starch or water soluble polymer) were obtained in a simple and inexpensive process. The tin precursor was synthesized using modified reverse nanoemulsion technique (w/o) and then coated by a source of carbon. The composites precursors were pyrolysed, affording formation of C/Sn anode materials. The resulting samples were investigated by powder X-ray diffraction studies in order to verify the structure and calculate crystallites sizes. The morphology of the nanocomposites was characterized by low-temperature nitrogen adsorption method (N$_{2}$-BET). Thermal analysis measurements (EGA-TG/DTG/DTA and DSC) allowed determining optimal conditions of preparation process and estimating carbon content in the obtained anode materials. Thermogravimetric studies also proved to be highly useful in establishing the leak behaviour of C/Sn nanocomposites. The electrochemical performance of the nanopowders was examined by charge–discharge tests in R2032-type coin cell. The thermal analysis results as well as low-temperature nitrogen adsorption data indicated that the origin of carbon precursor has major impact on morphology and leak behaviour of the obtained carbon buffer matrix. The electrochemical tests showed that better tightness of carbon–tin nanocomposites resulted in higher gravimetric capacity and better cell performance.
Starting Page	47
Ending Page	53
Page Count	7
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	127
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-06-25
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Li-ion batteries C/Sn anodes Carbon coating Encapsulation Leak testing Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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