Publications by authors named "Karthik Mayilvahanan"
The ever-growing needs for renewable energy demand the pursuit of batteries with higher energy/power output. A thick electrode design is considered as a promising solution for high-energy batteries due to the minimized inactive material ratio at the device level. Most of the current research focuses on pushing the electrode thickness to a maximum limit; however, very few of them thoroughly analyze the effect of electrode thickness on cell-level energy densities as well as the balance between energy and power density.
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- The study used synchrotron-based operando energy dispersive X-ray diffraction (EDXRD) to analyze lithiated lithium vanadium oxide (LVO) within thick porous electrodes (TPEs) during cycling.
- Homogeneous phase transitions were observed across the thickness of the electrodes at multiple cycling stages, confirming uniform lithiation and correlating loss in capacity over cycles to decreasing active material availability.
- The findings were further supported by continuum modeling and SEM observations of particle fracture, enhancing the understanding of lithium transport properties in high-rate cycling conditions.
To suppress dendrite formation in lithium metal batteries, high cation transference number electrolytes that reduce electrode polarization are highly desirable, but rarely available using conventional liquid electrolytes. Here, we show that liquid electrolytes increase their cation transference numbers (e.g.
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