Fourier Transform Electrochemical Impedance Spectroscopic Studies on LiFePO4 Nanoparticles of Hollow Sphere Secondary Structures
Cited 9 times inCited 10 times in
- Fourier Transform Electrochemical Impedance Spectroscopic Studies on LiFePO4 Nanoparticles of Hollow Sphere Secondary Structures
- Min, Geun Gi; Ko, Younghoon; Kim, Tae-Hee; Song, Hyun-Kon; Kim, Seung Bin; Park, Su-Moon
- Battery electrode; Cathode materials; Different structure; Discharging process; Electrochemical impedance; Hollow sphere; Impedance behavior; Impedance measurement; Impedance parameters; LiFePO; Lithium-ion battery; Potentiodynamics; Real time; Secondary structures; Spectroscopic studies
- Issue Date
- ELECTROCHEMICAL SOC INC
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.158, no.12, pp.A1267 - A1274
- Real-time impedance behaviors of LiFePO4 nanoparticles of two different structures have been investigated as cathode materials for lithium ion batteries using real time Fourier transform electrochemical impedance spectroscopy (FTEIS) techniques during potentiodynamic charging and discharging cycles. The effects of their nanostructures were examined employing hollow sphere secondary structured LiFePO4 particles prepared by sequential precipitations and commercially available non-hollow structured LiFePO4 particles. The battery constructed with the hollow sphere secondary structured LiFePO4 cathode material exhibited improved performances during charging and discharging processes as judged from various impedance parameters compared to those observed for the cell using its non-hollow counterpart. These results appear to have resulted from the enhancement of intrinsic capabilities for electron and charge transport characteristics of LiFePO4 by modifying its secondary structures. The real time impedance measurements were shown to be powerful in studying behaviors of battery electrodes during charging and discharging processes.
- ; Go to Link
Appears in Collections:
- SNS_Journal Papers
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.