By utilizing an equilibrium processing strategy that enables co-firing of oxides and base metals, a means to integrate the lithium-stable fast lithium-ion conductor lanthanum lithium tantalate directly with a thin copper foil current collector appropriate for a solid-state battery is presented. This resulting thin-film electrolyte possesses a room temperature lithium-ion conductivity of 1.5 × 10(-5) S cm(-1) , which has the potential to increase the power of a solid-state battery over current state of the art.

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We describe an elastic recoil detection (ERD) analysis technique for profiling 1H in the near-surface regions of solids using a 2.5-MeV Van de Graaff accelerator commonly used for ion-backscattering analysis. Energy analysis of 1H forward scattered by 2.4-MeV 4He incident on the target tilted at an angle of ∼75° yields a depth resolution of ≲700 Å and a sensitivity of better than 0.1 at.% for 1H to depths of ≲0.6 μm in solids.