期刊
RSC ADVANCES
卷 3, 期 31, 页码 12625-12630出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra42447b
关键词
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资金
- WCU (World Class University) program [R31-2008-000-20012-0]
- Korea Institute of Energy Research [GP2012-0024-03]
- New & Renewable Energy of the Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Korea government Ministry of Knowledge Economy [20113020030060]
- ITRC (Information Technology Research Center) [NIPA-2012-C1090-1200-0002]
- National Research Foundation of Korea (NRF)
- Korea Government (MEST) [2010-0019408]
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.
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