Search

Aerosol deposition (AD) is a ceramics coating technology that can be used at room temperature. AD does not use organic binders for the ceramics coating process, which reduces the amount of exhaust carbon dioxide. Additionally, AD realize fast and wide-area ceramics coating without heating the substrate. Thus, AD is an environmentally friendly ceramics coating process. AD has been already applied to various research fields including energy conversion devices such as rechargeable lithium-ion batteries and solid oxide fuel cells. Unique properties of AD are effective to investigate the fundamental properties of oxide-based all-solid-state batteries (Ox-SSBs) and possibly their productions. This paper reviews developments of Ox-SSBs using AD, mainly presenting our research. [ABSTRACT FROM AUTHOR]

Interfacial resistance at electrode‐high Li+ conductive solid electrolytes must be reduced well to develop high‐power all‐solid‐state batteries using oxide‐based solid electrolytes (Ox‐SSBs). Herein, crystalline electrode films of LiCoO2 (LCO) are formed on a high Li+ conductive crystalline‐glass solid electrolyte sheet, Li1.3Al0.3Ti2(PO4)3 (LATP) (σ25 °C = 1 × 10−4 S cm−1), at room temperature by aerosol deposition (AD), and the effects of the annealing temperature on the interfacial resistivities (Rint) at the LCO/LATP are investigated. The Rint visibly increases by annealing over 500 °C with the growth of Co3O4 as a reactant. In contrast, Rint is reduced to ≈100 Ω cm2 by low‐temperature annealing at 250–350 °C due to superior contact through the structural rearrangement of an artificial metastable interface formed by the AD. These results are applied to bulk‐type Ox‐SSB, Li/Li7La3Zr2O12(LLZ)/LCO–LATP, and our best Ox‐SSB delivers a discharge capacity of 100 mA cm−2 at 100 °C. [ABSTRACT FROM AUTHOR]