Cited 19 time in webofscience Cited 18 time in scopus

Improving the Cycling Performance of Lithium-Ion Battery Si/Graphite Anodes Using a Soluble Polyimide Binder

Title
Improving the Cycling Performance of Lithium-Ion Battery Si/Graphite Anodes Using a Soluble Polyimide Binder
Authors
Oh, JeonghunJin, DaheeKim, KyumanSong, DanohLee, Yong MinRyou, Myung-Hyun
DGIST Authors
Oh, Jeonghun; Jin, Dahee; Kim, Kyuman; Song, Danoh; Lee, Yong Min; Ryou, Myung-Hyun
Issue Date
2017-11
Citation
ACS Omega, 2(11), 8438-8444
Type
Article
Article Type
Article
Keywords
ELECTRODETIN-BASED INTERMETALLICSPOLYETHYLENE SEPARATORSSILICON ANODESADHESION PROPERTIESCOMPOSITESURFACESYSTEMTEMPERATURELITHIATION
ISSN
2470-1343
Abstract
Herein, we improved the performance of Si/graphite (Si/C) composite anodes by introducing a highly adhesive co-polyimide (P84) binder and investigated the relationship between their electrochemical and adhesion properties using the 90° peel test and a surface and interfacial cutting analysis system. Compared to those of conventional poly(vinylidene fluoride) (PVdF)-based electrodes, the cycling performance and rate capability of P84-based Si/C anodes were improved by 47.0% (372 vs 547 mAh g -1 after 100 cycles at a 60 mA g -1 discharge condition) and 33.4% (359 vs 479 mAh g -1 after 70 cycles at a 3.0 A g -1 discharge condition), respectively. Importantly, the P84-based electrodes exhibited less pronounced morphological changes and a smaller total cell resistance after cycling than the PVdF-based ones, also showing better interlayer adhesion (F mid ) and interfacial adhesion to Cu current collectors (F inter ). © 2017 American Chemical Society.
URI
http://hdl.handle.net/20.500.11750/11701
DOI
10.1021/acsomega.7b01365
Publisher
America Chemical Society
Related Researcher
  • Author Lee, Yong Min Battery Materials & Systems LAB
  • Research Interests Battery; Electrode; Electrolyte; Separator; Simulation
Files:
Collection:
Department of Energy Science and EngineeringBattery Materials & Systems LAB1. Journal Articles


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