Electrochemical properties of poly(4,4′-diaminodiphenyl sulfone) as a cathode material of lithium secondary batteries

Doped poly(4,4′-diaminodiphenyl sulfone) (pDDS) is prepared for use as a cathode-active material of lithium secondary batteries by chemical oxidation method using ammonium persulfate initiator. The synthesized pDDS and doped pDDS are characterized by chemical structure analysis using Fourier-transfo...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 2013-11, Vol.70 (11), p.3011-3018
Main Authors: Yun, Su-Ryeon, Kim, Kwang Man, Ko, Jang Myoun, Kang, Yongku, Ryu, Kwang Sun
Format: Article
Language:English
Subjects:
Ammonium peroxodisulfate
Applied sciences
Cathodes
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Complex Fluids and Microfluidics
Direct energy conversion and energy accumulation
Discharge
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical analysis
Electrochemical conversion: primary and secondary batteries, fuel cells
Electrode materials
Electrodes
Electrolytes
Electrons
Energy storage
Exact sciences and technology
Fourier transforms
Infrared analysis
Infrared spectroscopy
Lithium
Lithium batteries
Lithium ions
Low currents
Organic Chemistry
Organic polymers
Original Paper
Oxidation
Photoelectrons
Physical Chemistry
Physicochemistry of polymers
Polymer Sciences
Polymers
Polymers with particular properties
Preparation, kinetics, thermodynamics, mechanism and catalysts
Soft and Granular Matter
Spectrum analysis
Storage batteries
Structural analysis
X ray photoelectron spectroscopy
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Summary:Doped poly(4,4′-diaminodiphenyl sulfone) (pDDS) is prepared for use as a cathode-active material of lithium secondary batteries by chemical oxidation method using ammonium persulfate initiator. The synthesized pDDS and doped pDDS are characterized by chemical structure analysis using Fourier-transform infrared spectroscopy and X-ray photoelectron spectroscopy. Cyclic voltammetry shows that the doped pDDS has a typical pair of redox peaks at 3.75/3.15 V vs. Li/Li + , corresponding to charging/discharging of the lithium ion. The discharge capacity at low current rate (0.05 C-rate) achieves 31.5 and 24.3 mA h g −1 in the initial and 50th cycles, respectively. The doped pDDS also shows good cycle performance and high-rate capability, making it appropriate as a cathode material of lithium secondary batteries.
ISSN:0170-0839
1436-2449
DOI:10.1007/s00289-013-1003-3