Interactions are important: Linking multi-physics mechanisms to the performance and degradation of solid-state batteries

Challenges, interface engineering, and processing strategies toward practical sulfide‐based all‐solid‐state lithium batteries

“…95 Contrastingly, the resulting mechanical stresses remain localized in the active materials due to the absence of wetting liquid in sulfide-based ASSLBs. 96 Furthermore, the rigid mechanics-coupling between the CAMs and SEs could induce more complex nonlocal strain effects under conditions of confined space and can cause complex chemomechanics failures such as cracks evolution within the electrode and SE layers or delamination between SE and electrode layers, which subsequently contributes to the contact loss and cell mechanical failure on a macrolevel. 64,[97][98][99] In addition, the void formation may also occur during the lithium plating or stripping process at SE/Li interfaces.…”

Mechanical behaviour of inorganic solid-state batteries: can we model the ionic mobility in the electrolyte with Nernst–Einstein's relation?

“…By using TEM and STEM-EELS analysis, they showed that the decrease in the capacity at 80 1C was caused by the decomposition reaction in the disordered LiCoO 2 layer at the interface. 57,60 Secondly, if pure metallic Li is used as the negative electrode to boost the gravimetric and volumetric energy density, 1 one should note that Li melts at 180 1C. This limitation indicates that a solid-state cell with a Li electrode cannot be operated at temperatures approaching 180 1C.…”

“…A near-zero concentration gradient implies that the macroscopic diffusion overpotential in an inorganic solid electrolyte is negligible. 60 The migration of mobile cations by hopping between lattice sites is the principal conduction mechanism governing the ionic mobility in an inorganic solid electrolyte. 60 Therefore, the ionic conductivity can be measured directly from the impedance measurement, thus implicitly including the effects of correlations between the mobile cations.…”

“…60 The migration of mobile cations by hopping between lattice sites is the principal conduction mechanism governing the ionic mobility in an inorganic solid electrolyte. 60 Therefore, the ionic conductivity can be measured directly from the impedance measurement, thus implicitly including the effects of correlations between the mobile cations. 6,11,12 As material discovery is increasingly aided by computer simulations, there may be materials of interest in which the ionic diffusion coefficient is relevant.…”

PIM‐1 as a Multifunctional Framework to Enable High‐Performance Solid‐State Lithium–Sulfur Batteries

“…[6] Developing solidstate Li-S batteries without flammable liquid organic electrolytes is a promising route to overcome these challenges. [6][7][8][9][10] Among the various solid-state electrolytes available, poly(ethylene oxide) (PEO) has been extensively researched due to its merits of good film-forming ability, flexibility, and low interfacial resistance. [11,12] However, the intrinsic shortcoming of low ionic conductivity (10 -6 -10 -7 S cm −1 at room temperature) limits its application in commercially relevant batteries; the semi-crystalline nature of the PEO matrix hinders the formation of continuous Li + transfer pathways.…”