Journal
POLYMER
Volume 68, Issue -, Pages 328-334Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2015.01.054
Keywords
Ferrocene; Poly(fluorenylethynylene)s; Organic cathode materials
Categories
Funding
- National Natural Science Foundation of China [51373145]
- Hong Kong Research Grants Council [HKBU203313]
- Areas of Excellence Scheme, University Grants Committee of HKSAR [AoE/P-03/08]
- Hong Kong Baptist University [FRG2/12-13/083]
- Science, Technology and Innovation Committee of Shenzhen Municipality [JCYJ20120829154440583]
- Bundesministerium fur Bildung und Forschung
- European Social Fund (ESF)
- Thuringer Aufbaubank [TAB 2011FGR0088]
- Thuringian Ministry of Economy, Employment and Technology (TMWAT)
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Two new poly(fluorenylethynylene)s with ferrocene moieties PFFAL1 and PFFAL2 were designed and synthesized. Their structures, molar masses, photophysical properties and thermal characteristics were analyzed by H-1 NMR, Fourier transform infrared (FTIR) spectroscopy, size exclusion chromatography (SEC), ultraviolet-visible (UV-Vis) spectroscopy and thermogravimetric analysis (TGA). The morphologies and electrochemical performances of the polymer-composed cathodes were studied by scanning electron microscopy (SEM), cyclic voltammetry (CV) and galvanostatic charge-discharge test. The results showed that PFFAL1-composed electrode retained over 90% of the initial capacity after 100 cycles at 10 C and PFFAL2-based cathode exhibited a stable discharge capacity of 73 mAh g(-1) at 1 C, which is close to the theoretical value (82.3 mAh g(-1)). The stable capacity as well as the good cycle endurance of these polymer-based coin cells revealed their great potential as cathode-active materials for rechargeable lithium batteries. (C) 2015 Elsevier Ltd. All rights reserved.
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