Back to Search
Start Over
An Electrochemical-Cycling-Induced Capacitive Component on the Surface of an Electrophoretic-Deposited Lithium Iron Phosphate Cathode.
- Source :
- Crystals (2073-4352); Jul2024, Vol. 14 Issue 7, p658, 11p
- Publication Year :
- 2024
-
Abstract
- In our research, we apply electrophoretic deposition (EPD) using AC voltage to investigate how high-C-rate electrochemical reactions affect pseudocapacitive charge storage in lithium iron phosphate (LFP) Li-ion batteries. This method significantly raises the battery's specific capacity, achieving ~90 mAh/g at a 1 C-rate, along with outstanding cycle stability. Although we observe some capacity reduction over numerous cycles, there is a notable increase in the pseudocapacitive contribution to the battery's charge storage. This is demonstrated by the consistent peak positions and currents during CV and a stable diffusion constant maintained at 9.6 × 10<superscript>−9</superscript> cm<superscript>2</superscript>∙s<superscript>−1</superscript>. These findings highlight the battery's durability, especially in high-demand scenarios. After an extended cycling period of ~500 cycles, the redox peaks related to the Fe<superscript>2+</superscript>/Fe<superscript>3+</superscript> redox processes remain unchanged in terms of magnitude and position, indicating the battery's excellent reversibility. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20734352
- Volume :
- 14
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Crystals (2073-4352)
- Publication Type :
- Academic Journal
- Accession number :
- 178691185
- Full Text :
- https://doi.org/10.3390/cryst14070658