Exploring the Impact of Mechanical Pressure on the Performance of Anode-Free Lithium Metal Cells

A. J. Louli, Matthew Genovese, Rochelle Weber, S. G. Hames, E. R. Logan, J. R. Dahn
2019 Journal of the Electrochemical Society  
In the pursuit of surpassing the energy density of conventional lithium ion cells, significant efforts have been made to develop lithium metal cells. However, many reports in the literature utilize Li-metal cells with significant excess lithium, resulting in a dramatically reduced practical energy density. In contrast, anode-free cells do not utilize excess lithium; instead, a lithium metal anode is formed in-situ from the stored lithium within the positive electrode during the first charge.
more » ... he first charge. Here, we evaluate anode-free lithium metal pouch cells (NMC532||Cu) with operando pressure measurements constrained to different stack pressures between 75-2205 kPa with two different electrolytes, 1M LiPF 6 FEC:DEC (
doi:10.1149/2.0091908jes fatcat:nelazstxwze3ff3xzfx6lvqgpi