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The interlayer consists of lithiophilic metallic or metal-containing nanoparticles supported on holey graphene, a special carbon material perforated by small holes that enables dry processing. The composite interlayer guides uniform lithium deposition and maintain stability during cycling. The result is a thin, film-like material that can be integrated (via dry processes) into battery cells as standalone interlayers or combined with solid electrolyte and cathode powders to form bi- and tri-layer structures, separating anodes and electrolytes while encouraging efficient ionic movement and long cell lifecycles. Tests found that battery cells incorporating this dry-processed interlayer achieved ultrahigh current density and low overpotential, indicating that the interlayer prevents rough patches, resists dendrite formation, and supports efficient charge and discharge over time. The interlayer has demonstrated a high lithium-ion flux (i.e., a high critical current density of ~25 mA/cm²) and has shown that full battery cells incorporating the protective layer can be successfully cycled (with an areal capacity of 7 mAh/cm²). This innovation contributes to both the SABERS (LEW-TOPS-167) and SABERS 2.0 (LEW-TOPS-188) portfolios, improving the state of the art for solid state batteries. The anode interlayer is currently at a TRL 4 and is available to license independently or as part of the larger SABERS solid-state battery suite.