00/03336 Analysis by electrochemical impedance spectroscopy of new MCFC cathode materials

2000 ◽  
Vol 41 (6) ◽  
pp. 375
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Cathode Materials ◽  
Electrochemical Impedance

An Electrochemical Impedance Spectroscopy (EIS) Study of Zn-Doped Li (Ni1/3Co1/3Mn1/3) O2 Cathode Materials in the First Delithiation Process

2013 ◽  
Vol 833 ◽  
pp. 50-55 ◽  
Author(s):  
Lu Zheng ◽  
Liang Bin Liu ◽  
Xiao Jing Zhou ◽  
Yu Zhong Guo
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Cathode Materials ◽  
Electrochemical Impedance ◽  
Crystalline Lattice ◽  
Zn Doping ◽  
Voltage Range ◽  
Sei Film ◽  
Zinc Doping ◽  
Co Precipitation

Li (Ni1/3Co1/3Mn1/3) O2 cathode materials doped by Zn were synthesized by a co-precipitation routine, the first delithiation process of the samples with 0-4wt% of Zn doping were studied by electrochemical impedance spectroscopy (EIS) under the polarized voltage of 2.8-4.6V. The fitting results based on EIS data indicate that delithiation reactions happen within the voltage range of 3.7-4.4V ; The resistances of SEI film and charge transfer are both decreased significantly, whereas Li+ diffusion ability through layered crystalline lattice is improved largely with the increase of zinc doping from 0 to 4wt%.

Analysis by electrochemical impedance spectroscopy of new MCFC cathode materials

2000 ◽  
Vol 86 (1-2) ◽  
pp. 309-315 ◽  
Author(s):  
F.J Pérez ◽  
D Duday ◽  
M.P Hierro ◽  
C Gómez ◽  
M Romero ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Cathode Materials ◽  
Electrochemical Impedance

Titania Containing Cathodes for Lithium-Sulfur Batteries: Case Studies by Electrochemical Impedance Spectroscopy

2021 ◽  
Vol 105 (1) ◽  
pp. 169-176
Author(s):  
Ladislav Kavan ◽  
Monika Vinarcikova ◽  
Magda Zlámalová ◽  
Marketa Zukalova
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrolyte Solution ◽  
Cathode Materials ◽  
Redox Reactions ◽  
Electrochemical Impedance ◽  
Barrier Material ◽  
Lithium Sulfur Batteries ◽  
Commercial Carbon ◽  
Lithium Sulfur

Electrochemical impedance spectroscopy is used to study novel cathode materials for lithium-sulfur batteries, based on commercial carbon and titania. Coin cells with Li anode are investigated at various stages of galvanostatic cycling. For comparison, also symmetrical coin cells with a pair of positive (S/C/TiO2) or negative (Li) electrodes are studied. In addition to the application of titania as a barrier material impeding the polysulfide diffusion in the electrolyte solution, the inherent Li-insertion activity of TiO2 (anatase) and its contribution to the sulfur redox reactions is discussed.

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