Abstract
Electrodeposition of nano core/shell Sn–O–C composite anodes for lithium secondary batteries and improvement of cycle performances by a simple agitation technique.
Highlights
Research on tin-based materials for an Li-alloying anode of lithium ion batteries (LIBs) has been accelerated due to its higher theoretical capacity (Li4.4Sn; 993 mA h gÀ1) than that of a commercial graphite anode (LiC6; 372 mA h gÀ1), which has been considered as one of solutions for the development of energy resources for electric vehicles.[1]
These results indicated a rapid decrease in the current density during the initial few seconds, which was obtained with each current transient of the three potentiostatic steps for both composites deposited with and without bath agitation
It is suggested that the shell layer of the Sn–O–C composite was produced by electrolyte decomposition during the deposition process, causing solid electrolyte interphase (SEI) formation
Summary
Research on tin-based materials for an Li-alloying anode of lithium ion batteries (LIBs) has been accelerated due to its higher theoretical capacity (Li4.4Sn; 993 mA h gÀ1) than that of a commercial graphite anode (LiC6; 372 mA h gÀ1), which has been considered as one of solutions for the development of energy resources for electric vehicles.[1]. The composite deposited without bath agitation obviously showed two strong deconvoluted curves assigned to 199.4 and 201.1 eV indicating LiCl of Cl 2p3/2 and Cl 2p1/2, respectively.[35] From these results, it is suggested that the shell layer of the Sn–O–C composite was produced by electrolyte decomposition during the deposition process, causing SEI formation.
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