Symmetric cells utilizing the LixAg alloy exhibited exceptional stability for approximately 1,200 hours at a current density of 0.2 mA/cm². This performance surpassed that of conventional lithium metal anodes.
Furthermore, the interfacial resistance between the LLZTO electrolyte and the LixAg anode was measured at an ultralow 2.5 Ω·cm², which indicates highly efficient ion transport across the interface.
“This dramatic reduction in interfacial resistance enables both higher power output and improved energy efficiency,” added the press release.
‘Soft lattice’ for sustained diffusion
The researchers attribute the LixAg alloy’s success to its unique physical properties, including a low eutectic point and high mutual solubility with lithium.