BROWSE

Related Researcher

Author

Yang, Changduk
Advanced Tech-Optoelectronic Materials Synthesis Lab (ATOMS)
Research Interests
  • Optoelectronic materials synthesis/organic electronics, functionalization of carbonaceous solids, advanced materials chemistry, macromolecular chemistry

ITEM VIEW & DOWNLOAD

Amphiphilic Graft Copolymers as a Versatile Binder for Various Electrodes of High-Performance Lithium-Ion Batteries

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Amphiphilic Graft Copolymers as a Versatile Binder for Various Electrodes of High-Performance Lithium-Ion Batteries
Author
Lee, Jung-InKang, HyojinPark, Kwang HyunShin, MyoungsooHong, DongkiCho, Hye JinKang, Na-RiLee, JunghoLee, Sang MyeonKim, Ju-YoungKim, Choon KiPark, HyesungChoi, Nam-SoonPark, SoojinYang, Changduk
Keywords
batteries; block copolymers; electrodes; Si porous materials
Issue Date
201606
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v.12, no.23, pp.3119 - 3127
Abstract
It is known that grafting one polymer onto another polymer backbone is a powerful strategy capable of combining dual benefits from each parent polymer. Thus amphiphilic graft copolymer precursors (poly(vinylidene difluoride)-graft-poly(tert-butylacrylate) (PVDF-g-PtBA)) have been developed via atom transfer radical polymerization, and demonstrated its outstanding properties as a promising binder for high-performance lithium-ion battery (LIB) by using in situ pyrolytic transformation of PtBA to poly(acrylic acid) segments. In addition to its superior mechanical properties and accommodation capability of volume expansion, the Si anode with PVDF-g-PtBA exhibits the excellent charge and discharge capacities of 2672 and 2958 mAh g−1 with the capacity retention of 84% after 50 cycles. More meaningfully, the graft copolymer binder shows good operating characteristics in both LiN0.5M1.5O4 cathode and neural graphite anode, respectively. By containing such diverse features, a graft copolymer-loaded LiN0.5M1.5O4/Si-NG full cell has been successfully achieved, which delivers energy density as high as 546 Wh kg−1 with cycle retention of ≈70% after 50 cycles (1 C). For the first time, this work sheds new light on the unique nature of the graft copolymer binders in LIB application, which will provide a practical solution for volume expansion and low efficiency problems, leading to a high-energy-density lithium-ion chemistry.
URI
Go to Link
DOI
http://dx.doi.org/10.1002/smll.201600800
ISSN
1613-6810
Appears in Collections:
MSE_Journal Papers
ECHE_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU