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Improved Cycling Stability of Lithium Electrodes in Rechargeable Lithium Batteries

Title
Improved Cycling Stability of Lithium Electrodes in Rechargeable Lithium Batteries
Author
김동원
Keywords
Capacity retention; Conductive Polymer; Cycling stability; Electrolyte solutions; Lithium electrode; Organic electrolyte; Poly-3 ,4-ethylenedioxythiophene; Rechargeable lithium battery; Electrolytes; Lithium; Polyethylene glycols; Polymers; Plastic coatings
Issue Date
2014-01
Publisher
ELECTROCHEMICAL SOC INC, 65 SOUTH MAIN STREET, PENNINGTON, NJ 08534 USA
Citation
Journal of The Electrochemical Society, 2013, 161(1), P. A53-A57
Abstract
Poly(3,4-ethylenedioxythiophene)-co-poly(ethylene glycol) copolymer was coated onto lithium metal as a protective layer. The thin conductive polymer with strong adhesion to the lithium electrode suppressed the corrosion of the lithium metal and stabilized the interface of the lithium electrode in prolonged contact with the organic electrolyte. The conductive polymer coating on the lithium metal caused the capacity retention of the Li/LiCoO2 cell to increase from 9.3% to 87.3% after 200 cycles compared to the cell with the pristine lithium electrode. The improvement in cycling stability is attributed to the conductive polymer coating suppressing lithium dendrite growth and the deleterious reaction between the lithium electrode and the electrolyte solution during cycling.
URI
http://jes.ecsdl.org/content/161/1/A53http://hdl.handle.net/20.500.11754/47499
ISSN
0013-4651
DOI
10.1149/2.029401jes
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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