A Li-free inverted-stack all-solid-state thin film battery using crystalline cathode material

Current status and future perspectives of lithium metal batteries

“…metal anode on different substrates (Cu, Au, or pre-existing Li) using LLZO garnet-type [165] or LIPON electrolytes [166]. But the best results so far were obtained by Samsung, who developed a Li metal-free Ag-C/Li 6 PS 5 Cl/NMC ASSB, where lithium is grown in-situ on the silver-carbon composite electrode (see Fig.…”

Recent advancements in solid electrolytes integrated into all-solid-state 2D and 3D lithium-ion microbatteries

“…242 A similar "Li-free" inverted stack battery of stainless substrate (SUS)/PtLiPON/LCO/Au was also tested. 243 It was observed that the cell with 7.5 mm-thick LiPON had the stable capacity of approximately 100 mA h g À1 at 5 mA cm À2 for 100 cycles due to good protection from the short circuit and the undesired reactions of plated Li. At the same time, the cell with 1.5 mm-thick LiPON was short-circuited due to insufficient mechanical strength of thin LiPON layer.…”

“…At the same time, the cell with 1.5 mm-thick LiPON was short-circuited due to insufficient mechanical strength of thin LiPON layer. 243 Further investigations on the improvement of energy density in "Li-free" microbatteries are in progress nowadays.…”

From Lithium‐Metal toward Anode‐Free Solid‐State Batteries: Current Developments, Issues, and Challenges

“…A discharge capacity of 43 µAh cm −2 µm −1 with an excellent stability up to 770 cycles is achieved at a current density of 0.1 mA cm −2 . Yamamoto et al [108] recently took up these ideas and designed an inverted cell stack, which enables the use of crystalline cathode materials and much larger coating thickness via aerosol deposition on the amorphous LiPON film. The SS | Pt | LiPON | LiCoO 2 | Au cell operated at 4 V, delivered a capacity of 110 mAh g −1 and showed stable cycling behavior without the need for a sealing material (Figure 3a-c).…”

“…Reproduced under the terms of the Creative Commons CC BY license. [108] Copyright 2019, Elsevier. Schematic illustrations of d) common thin film AFSSB and e) a modified stack that has an LiPON|LiPON interface extending from the Cu CC to form an artificial LiPON grain boundary.…”