期刊
JOURNAL OF POLYMER RESEARCH
卷 22, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1007/s10965-015-0777-4
关键词
Rechargeable; Organic; Polymer; Battery; Click reaction; Cathode
资金
- TUBITAK (The Scientific and Technological Research Council of Turkey) [112T516]
In the present study, a new type of cathode-active polymeric material was synthesized via a synthetic strategy which involves a series of high-yield and simple chemical reactions performed on a commercially available and relatively cheap polymer, poly(p-chloromethylstyrene). Polymeric support for the electro-active TEMPO was obtained by nitroxide-mediated polymerization (NMP) of p-chloromethyl styrene. This polystyrene derivative was converted to a polymer with pendant electro-active TEMPO radical groups via an azidation reaction which was followed by a click reaction with an alkyne functionalized TEMPO derivative. The obtained polystyrene bearing TEMPO radical polymer possessed a high spin density of 1.4x10(21) spin/g indicating that electro-active TEMPO groups were successfully attached to the polymer with high yield. The composite cathode material obtained by mixing this TEMPO functionalized polymer with graphite showed a reversible electrochemical redox behavior in a cyclic voltammetry (CV) study vs. Li metal anode. The Li-battery constructed using this cathode maintained 83 % of the its initial capacity (35 mAh/g) over 80 cycles with a cell potential of 3.8 V.
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