BROWSE

Related Researcher

Author's Photo

Choi, Nam-Soon
Energy Materials Lab
Research Interests
  • Rechargeable lithium battery, electrolytes for next generation Mg and Na battery

ITEM VIEW & DOWNLOAD

Room‐Temperature Crosslinkable Natural Polymer Binder for High‐Rate and Stable Silicon Anodes

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Room‐Temperature Crosslinkable Natural Polymer Binder for High‐Rate and Stable Silicon Anodes
Author
Ryu, JaegeonKim, SunghoKim, JiminPark, SoohamLee, SeunghoYoo, SeokkeunKim, JangbaeChoi, Nam-SoonRyu, Ja-HyoungPark, Soojin
Issue Date
2020-02
Publisher
John Wiley & Sons Ltd.
Citation
ADVANCED FUNCTIONAL MATERIALS, v.30, no.9, pp.908433
Abstract
Natural polymers with abundant side functionalities are emerging as a promising binder for high‐capacity yet large‐volume‐change silicon anodes with a strong and reversible supramolecular interaction that originates from secondary bonding. However, the supramolecular network solely based on hydrogen bonding is relatively vulnerable to repeated deformation and has an insufficient diffusivity of lithium ions. Herein, reported is a facile but efficient way of incorporating the natural polymers with an ionically conductive crosslinker, which can construct a robust network for silicon anodes. The boronic acid in the crosslinker spontaneously reacts with natural polymers to generate boronic esters at room temperature without any kind of triggers, which gives a strong and dynamic covalent bonding to the supramolecular network. The other component in the crosslinker, polyethylene oxide, contributes to the enhanced ionic conductivity of polymers, leading to outstanding rate performances even at a high mass loading of silicon nanoparticles (>2 mg cm−2). The small portion of the proposed crosslinker can modulate the strength of the entire network by balancing the covalent crosslinking and self‐healing secondary interaction along with the fast lithium‐ion diffusion, thus enabling the extended operation of silicon electrodes.
URI
https://scholarworks.unist.ac.kr/handle/201301/30700
URL
https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201908433
DOI
10.1002/adfm.201908433
ISSN
1616-301X
Appears in Collections:
SNS_Journal Papers
ECHE_Journal Papers
Files in This Item:
There are no files associated with this item.

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

Show full item record

qrcode

  • mendeley

    citeulike

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

MENU