Journal
JOURNAL OF POWER SOURCES
Volume 196, Issue 8, Pages 4136-4142Publisher
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.11.042
Keywords
Lithium-ion capacitors; LiFePO4; AC; CMC; Aqueous processing
Funding
- Westfalische Wilhelms Universitat Munster
- Ministerium fur Innovation, Wissenschaft, Forschung und Technologie des Landes Nordrhein-Westfalen (MIWFT)
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This manuscript reports the performance of composite electrodes based on the mixture of two, electrochemically active, materials: lithium iron phosphate (LiFePO4) and activated carbon (AC). The sodium salt of carboxymethylcellulose (CMC) was used as binder to cast the composite electrodes out of aqueous slurries. The investigated electrodes display high specific capacity and high cycling stability. Upon constant current tests with a charge rate of 50C and a discharge rate of 1D, the electrodes display a capacity of ca. 70 mAh g(-1) while 60 mAh g(-1) are delivered during pulse sequence tests at 100C. These results indicate such electrodes as promising candidates for the realization of lithium-ion capacitors. (C) 2010 Elsevier B.V. All tights reserved.
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