Role of Ni-rich cathodes
ASSBs differ from conventional lithium-ion batteries by using solid electrolytes instead of liquid ones, reducing the risk of fire and improving energy storage capacity.
However, the performance of these batteries heavily depends on the effectiveness of their cathodes. Researchers have been focusing on Ni-rich cathodes because of their potential to significantly boost energy density. Yet, despite their advantages, these cathodes have shown certain limitations that affect battery longevity.
“ASSBs comprising Ni-rich layered cathode active materials (CAMs) and sulfide solid electrolytes are promising candidates for next-generation batteries with high energy densities and safety,” wrote Nam-Yung Park, Han-Uk Lee, and their colleagues in their paper.