Further offers for the topic Battery technology

Poster-No.

P3-075

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Multilayer electrodes have emerged as a promising approach to enhance the electrochemical performance of Li-ion batteries. One of the key advantages of multilayer electrodes is their ability to mitigate the specific limitations that typically occur in single-layer cathodes. Using multilayer electrodes with graded porosity both energy and power density can be enhanced. Here in we report manufacturing of bi-layer cathodes with graded porosity and its impact on electrode properties. Processed bi-layer electrodes had a porosity of 20% for the bottom layer and 40% for the top layer, with an overall porosity of 30%. Electrodes with areal capacities of 4 mAh/cm², 7 mAh/cm², and 10 mAh/cm² were investigated to evaluate the impact of structural grading on electrochemical performance.The results highlight the significant influence of grading on electrode properties, demonstrating its role in optimizing performance for high-energy lithium-ion batteries. The bi-layer electrodes exhibited lower tortuosity and enhanced rate capability compared to single-layer electrodes. Ragone calculations revealed that at high power densities (600 W/kg), graded electrodes enabled an approximate 35% increase in energy density, from 110 Wh/kg to 154 Wh/kg.