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Improvement in Cycle Performance by Suppression of Surface Reaction between Electrolyte and LiV3O8 Electrode Using Gel Polymer Electrolyte

Title
Improvement in Cycle Performance by Suppression of Surface Reaction between Electrolyte and LiV3O8 Electrode Using Gel Polymer Electrolyte
Author
김동원
Keywords
LITHIUM POWDER ANODE; ELECTROCHEMICAL-BEHAVIOR; BATTERIES; LI; MICROSTRUCTURE; LI1.1V3O8
Issue Date
2013-10
Publisher
IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, 2013, 52(10), P. 10MB08 (pages4)
Abstract
Amorphous lithium trivanadate (LVO) exhibits a higher capacity than crystalline LVO. However, products are generated from the reaction between the surface of an amorphous LVO electrode and the surrounding electrolyte during charging and discharging. The continuous reaction between the electrode surface and surrounding electrolyte was inhibited using a gel-polymer electrolyte (GPE) instead of a conventional liquid electrolyte. After 100 cycles, the GPE-based cell shows 54% of capacity retention, which was 9% higher capacity retention than that of the conventional liquid electrolyte cell. The GPE is prepared as Kynar 2801 polymer and the charge and discharge performances of the cell were measured using a standard battery cycling test at a 0.5 C-rate and 1.5-4.0 V cut off voltage. The morphologies of the electrode surfaces and the various products formed on the electrode surfaces during the reaction were analyzed using scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy, respectively. (C) 2013 The Japan Society of Applied Physics
URI
http://iopscience.iop.org/article/10.7567/JJAP.52.10MB08/metahttp://hdl.handle.net/20.500.11754/51362
ISSN
0021-4922; 1347-4065
DOI
10.7567/JJAP.52.10MB08
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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