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Cycling Characteristics of Lithium Powder Polymer Batteries Assembled with Composite Gel Polymer Electrolytes and Lithium Powder Anode
Author(s) -
Lee YoonSung,
Lee Jae Ha,
Choi JiAe,
Yoon Woo Young,
Kim DongWon
Publication year - 2013
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201200692
Subject(s) - materials science , anode , electrolyte , lithium (medication) , composite number , polymer , chemical engineering , ionic conductivity , electrochemistry , lithium battery , composite material , ion , ionic bonding , electrode , organic chemistry , medicine , chemistry , engineering , endocrinology
Novel composite gel polymer electrolytes exhibiting high ionic conductivity and good mechanical stability are prepared, and their electrochemical properties are characterized. As lithium ion sources of a single ion conductor, the core‐shell structured SiO 2 (Li + ) nanoparticles with uniform spherical shape are synthesized and used as functional fillers in the composite gel polymer electrolytes. By using the composite gel polymer electrolytes, the lithium powder polymer batteries composed of a lithium powder anode and a layered lithium vanadate (LiV 3 O 8 ) cathode are assembled and their cycling performance is evaluated. The resulting lithium powder polymer batteries deliver a high discharge capacity of 264 mAh g −1 at room temperature and exhibit good capacity retention even at high current rates. The morphological analysis of the lithium powder anode reveals that the dendrite growth during cycling can be effectively suppressed by using the composite gel polymer electrolytes.