کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5127359 | 1489009 | 2017 | 6 صفحه PDF | دانلود رایگان |
- At lower frequencies, there is a smaller slope in the impedance spectra of the carbon-containing battery.
- There is deviation from a semicircle in the diffusion branch of the fully charged battery.
- An explanation for the deviation is a hindered diffusion process.
- Impedance data hint that carbon acts as catalyst especially for the charge reaction.
The contribution presents impedance spectra of enhanced flooded batteries (EFBs) with reference electrodes for micro-hybrid applications. Batteries of different manufacturers are compared, also with respect to the temperature-dependency of their impedance spectra. Spectra fitting to suitable electrochemical equivalent circuits (EECs) allows a more thorough understanding of the physicochemical processes in these lead-acid batteries.
Journal: Journal of Energy Storage - Volume 13, October 2017, Pages 457-462