In situ XRD study of the structural changes of graphite anodes mixed with SiOx during lithium insertion and extraction in lithium ion batteries

Autor:	Junghwan Park, Yong Son Won, Sung Soo Park
Rok vydání:	2013
Předmět:	Materials science Silicon General Chemical Engineering Inorganic chemistry Analytical chemistry chemistry.chemical_element Electrochemistry Lithium-ion battery Ion Anode Lattice constant chemistry Lithium Graphite
Zdroj:	Electrochimica Acta. 107:467-472
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2013.06.059
Popis:	A comparative study of crystallographic changes of the graphite anodes mixed with SiO x (in short, graphite-SiO x ) to the pristine graphite during the lithium insertion and extraction under a half-cell condition is conducted by using in situ XRD for the first time. The structural changes of the graphite-SiO x anodes are relatively quantified from the time-dependent alteration in a and c lattice constants of their contained graphite during the charge and discharge. The results clearly confirm that Li + ions are inserted in the SiO x domain prior to graphite during the charge, and the delithiation takes place later in SiO x during the discharge consistently. Via this in situ XRD study, the electrochemical effect of the amount of silicon active materials in the graphite-SiO x is also monitored up to the 160% increase of the capacity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d5682009b90fcba43317545a5ab0f9fc https://doi.org/10.1016/j.electacta.2013.06.059 Zobrazit plný text záznamu Full Text from ScienceDirect