A review of mechanics-related material damages in all-solid-state batteries: Mechanisms, performance impacts and mitigation strategies

Unraveling the Li Penetration Mechanism in Polycrystalline Solid Electrolytes

“…[ 1,5 ] Their elastic moduli could range from tens to hundreds of gigapascals, which are, in theory, more than enough to physically block the growth of Li dendrite penetration. [ 4,6,7 ] Unfortunately, Li penetration in such promising ceramic SEs as Li 7 La 3 Zr 2 O 12 (LLZO) is unexpectedly observed in experimental studies. [ 8–12 ] Li filaments are found at microstructural defects such as voids, cracks, and particularly along the grain boundary (GB), [ 8,13–15 ] suggesting that the microstructural impact on the Li penetration behavior is significant.…”

Interface engineering for composite cathodes in sulfide-based all-solid-state lithium batteries

“…The structure of ASLBs can be divided into planar-layer structures, three-dimensional (3D) structures and particle-scale composite structures. The planar-layer structure is one of the most common structures of ASLBs, which is composed of five layers including current collectors on each side, an anode, a SE and a cathode [96,97]. The 3D structure is usually prepared via the deposition of AMs and SEs onto 3D substrates, which possess a large contact area but the poor electrochemical performance and high preparation cost [98].…”

A critical discussion on the analysis of buried interfaces in Li solid-state batteries. Ex situ and in situ/operando studies

“…Indeed, mechanical degradation of electrodes due to the loss of solid-solid interfaces or particle cracking is recognized as a critical challenge in the development of efficient and long cycle life SSBs. [83][84][85] Therefore, FIB-SEM represents a highly attractive method to evaluate the evolution of the microstructure of the diverse components in SSBs with a spatial resolution less than 100 nm. 82,86 However, the volumes of material probed by this technique are relatively small (60 μm × 40 μm × 30 μm for the experiments carried out by Ceder and coworkers), thus, the analysed region could be no representative of the mechanical behaviour of the whole material.…”