The microstructure of electrodes significantly affects the performance of lithium-ion batteries(LiBs),and using bi-diameter active particles is a simple but effective way to regulate the microstructure of commercial L...
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The microstructure of electrodes significantly affects the performance of lithium-ion batteries(LiBs),and using bi-diameter active particles is a simple but effective way to regulate the microstructure of commercial LiB ***,to optimize the LiB cathode of bi-diameter active particles,a microstructure-resolved model is developed and *** results indicate that randomly packing of bi-diameter active particles is optimal when the electrolyte diffusion limitation is mild,as it provides the highest volume fraction of active *** strong electrolyte diffusion limitations,layered packing with small particles near the separator is *** is because particles near the current collector have a low lithiation ***,optimizing the random packing can further improve the energy *** energy-oriented LiBs,a low volume fraction of small particles(0.2)is preferred due to the higher volume fraction of active *** power-oriented LiBs,a high volume fraction of small particles(0.8)is better because it reduces diffusion *** work should serve to guide the optimal design of electrode microstructure for achieving high-performance LiBs.
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