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

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A photo-cross-linkable polymeric binder for silicon anodes in lithium ion batteries

Cited 2 times inthomson ciCited 0 times inthomson ci
Title
A photo-cross-linkable polymeric binder for silicon anodes in lithium ion batteries
Author
Park, YuwonLee, SueunKim, Si-HoonJang, Bo YunKim, Joon SooOh, Seung M.Kim, Ju-YoungChoi, Nam-SoonLee, Kyu TaeKim, Byeong-Su
Keywords
Crosslinked structures; Cycle performance; High reversible capacities; Lithium-ion battery; Photo-cross-linked; Polyacrylic acids; Polymeric binder; Swelling measurements
Issue Date
201308
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v.3, no.31, pp.12625 - 12630
Abstract
A new photo-cross-linkable poly(acrylic acid) (PAA) polymer functionalized with a photoreactive benzophenone group (PAA-BP) was synthesized and examined as a binder for Si-based anodes. Upon UV irradiation, the PAA-BP binders formed an irreversible cross-linked structure through the formation of a new three-dimensional C-C bond network between the benzophenone moiety and the PAA backbone. The photo-cross-linked PAA-BP binder demonstrated a marginal volume expansion (38%) after full lithiation, compared to conventional binders and this resulted in an improved cycle performance of the Si anode over 100 cycles with a high reversible capacity of ca. 1600 mA h g-1. We attributed this phenomenon to the enhanced mechanical properties of the photo-cross-linked PAA-BP binder, which were evaluated using nanoindentation and swelling measurements.
URI
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DOI
http://dx.doi.org/10.1039/c3ra42447b
ISSN
2046-2069
Appears in Collections:
SNS_Journal Papers
MSE_Journal Papers
ECHE_Journal Papers

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