کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7716593 | 1497472 | 2015 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
State-of-health of a CuCl electrolyzer during a 168-h test
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: State-of-health of a CuCl electrolyzer during a 168-h test State-of-health of a CuCl electrolyzer during a 168-h test](/preview/png/7716593.png)
چکیده انگلیسی
A state-of-health test of a CuCl/HCl electrolytic cell was carried out by maintaining a constant current density of 0.3 A cmâ2 for 168 h at 80 °C and ambient pressure. While the most common method used to characterize the electrochemical performance of a CuCl electrolytic cell is to record current-voltage (I-V curves), it is also essential to separate the electrochemical and ohmic components of the polarization curve. In our study, the AC impedance characteristics of a single cell were studied along with the DC polarization curves. After the durability test, the potential required to maintain the cell at 0.3 A cmâ2 increased from 630 mV of the fresh membrane electrode assembly (MEA) to 710 mV due to some degradation processes in the electrolytic cell. Quantitative analysis of the performance decay was carried out by Electrochemical Impedance Spectroscopy (EIS). EIS measurements showed an increase in the area specific ohmic resistance of the MEA from 0.6 Ω cm2 to 0.85 Ω cm2 and area specific charge-transfer resistance from 0.61 Ω cm2 to 0.8 Ω cm2 measured at an overpotential of 0.2 V. The degradation in the cell is attributed to the decrease in membrane conductivity and an increase in the charge-transfer resistance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 1, 5 January 2015, Pages 62-69
Journal: International Journal of Hydrogen Energy - Volume 40, Issue 1, 5 January 2015, Pages 62-69
نویسندگان
Sanchit Khurana, Derek M. Hall, Rich S. Schatz, Mark V. Fedkin, Serguei N. Lvov,