Effect of pulse-current-based protocols on the lithium dendrite formation and evolution in all-solid-state batteries.

ABSTRACT: Understanding the cause of lithium dendrites formation and propagation is essential for developing practical all-solid-state batteries. Li dendrites are associated with mechanical stress accumulation and can cause cell failure at current densities below the threshold suggested by industry research (i.e., >5 mA/cm²). Here, we apply a MHz-pulse-current protocol to circumvent low-current cell failure for developing all-solid-state Li metal cells operating up to a current density of 6.5 mA/cm². Additionally, we propose a mechanistic analysis of the experimental results to prove that lithium activity near solid-state electrolyte defect tips is critical for reliable cell cycling. It is demonstrated that when lithium is geometrically constrained and local current plating rat

SUBMITTER: Reisecker V 

PROVIDER: S-EPMC10140044 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature