All-solid-state batteries (ASBs) are promising candidates for next-generation energy storage systems due to their enhanced safety and potential for higher energy densities. However, achieving practical ASBs with energy densities surpassing those of state-of-the-art lithium-ion batteries (LIBs) requires the development of thin, mechanically robust solid electrolyte separators (SESs). In this study, a scalable tape casting method is employed to fabricate a thin SES with a thickness of 27 µm and a high ionic conductance of 146 mS cm^-2. The SES, composed of Li₆PS₅Cl SE and a laser-drilled porous polyimide (PI) scaffold with a high porosity of 69%, exhibits a tensile stress of 7.15 MPa at 6% strain, demonstrating the mechanical integrity necessary for commercial roll-to-roll fabrication. Due to its reduced thickness, the LiNi_0.83Co_0.11Mn_0.06O₂||Li-In pouch cell achieves outstanding estimated cell-level gravimetric and volumetric energy densities of 322 Wh kg^-1 and 571 Wh L^-1, respectively, demonstrating its practical viability. Additionally, simulation studies highlight the importance of optimizing the porosity and pore distribution of porous scaffolds to minimize Li-ion flux heterogeneity and prevent non-uniform Li plating in scaffold-supported SESs. Finally, a 4 m long, double-side coated SES is successfully manufactured using an industrial-level comma coater, demonstrating the feasibility of the approach for large-scale SES production and the forthcoming commercialization of ASBs.

All-Solid-State Batteries A comprehensive understanding of the relationship between the molecular weight of polytetrafluoroethylene and its fibrillation capability enables the production of a sub-20-µm thick, robust, dry-processable solid electrolyte membrane for all-solid-state batteries (ASSBs). With establishing shear-mixing conditions, a fabrication of a uniquely thin ASSB based on the 18 µm thick solid electrolyte membrane is demonstrated, exhibiting significantly enhanced energy density. More in article number 2407882, Young-Sam Park, Dong Ok Shin, and co-workers.

All-solid-state batteries (ASBs) are promising candidates for next-generation energy storage systems due to their enhanced safety and potential for higher energy densities. However, achieving practical ASBs with energy densities surpassing those of state-of-the-art lithium-ion batteries (LIBs) requires the development of thin, mechanically robust solid electrolyte separators (SESs). In this study, a scalable tape casting method is employed to fabricate a thin SES with a thickness of 27 µm and a high ionic conductance of 146 mS cm^-2. The SES, composed of Li₆PS₅Cl SE and a laser-drilled porous polyimide (PI) scaffold with a high porosity of 69%, exhibits a tensile stress of 7.15 MPa at 6% strain, demonstrating the mechanical integrity necessary for commercial roll-to-roll fabrication. Due to its reduced thickness, the LiNi_0.83Co_0.11Mn_0.06O₂||Li-In pouch cell achieves outstanding estimated cell-level gravimetric and volumetric energy densities of 322 Wh kg^-1 and 571 Wh L^-1, respectively, demonstrating its practical viability. Additionally, simulation studies highlight the importance of optimizing the porosity and pore distribution of porous scaffolds to minimize Li-ion flux heterogeneity and prevent non-uniform Li plating in scaffold-supported SESs. Finally, a 4 m long, double-side coated SES is successfully manufactured using an industrial-level comma coater, demonstrating the feasibility of the approach for large-scale SES production and the forthcoming commercialization of ASBs.

All-Solid-State Batteries A comprehensive understanding of the relationship between the molecular weight of polytetrafluoroethylene and its fibrillation capability enables the production of a sub-20-µm thick, robust, dry-processable solid electrolyte membrane for all-solid-state batteries (ASSBs). With establishing shear-mixing conditions, a fabrication of a uniquely thin ASSB based on the 18 µm thick solid electrolyte membrane is demonstrated, exhibiting significantly enhanced energy density. More in article number 2407882, Young-Sam Park, Dong Ok Shin, and co-workers.

All-Solid-State Batteries In article number 2502996, Young-Gi Lee, Yong Min Lee, and co-workers fabricated a scalable scaffold-supported solid electrolyte separator (SES) with a thickness of 27 μm and high ionic conductance via laser drilling and tape casting. Mechanical and multiphysics simulations guide the design of the porous scaffold. The SES enables high cell-level energy density of 322 Wh kg−1 and excellent mechanical durability, supporting roll-to-roll (R2R) processing for practical all-solid-state batteries.

Abstract To eliminate the thermal impact on oxide semiconductor channels during the device integration, a novel stacking strategy is explored for 3D integration of oxide thin‐film transistors (TFTs). In this configuration, lower‐layer planar‐channel TFT (PTFT) and upper‐layer vertical‐channel TFTs (VTFTs) are designed in a vertical‐stacking arrangement with an inter‐electrode dielectric (IED) and a single active layer. This novel configuration is termed single‐active‐stacked TFT (SAS‐TFT). The choice of IED is identified as an important factor for the operational functionality of the bottom PTFT. The PTFT using an Al 2 O 3 IED demonstrates superior device performance in comparison to that using an SiO 2 IED. The disparities in process conditions between two IEDs are responsible for more severe process damage to the back‐channel interface and source/drain electrodes of the PTFT using an SiO 2 IED, attributable to the creation of additional defect states in the channel and the increase in contact resistance. Alternatively, the top VTFTs arranged in the SAS‐TFT employing an Al 2 O 3 IED exhibit sound device operations without any marked device‐stacking process damage. The top VTFT demonstrates a high current drivability of 26.8 µA µm ‒1 and an on/off current ratio of 10 10 . The SAS‐TFT is a successful innovation achieved through the exploration of optimal process conditions.

The impact of double-gate (DG) structure on synaptic weight updates was investigated in electrolytic-gated synapse transistors. DG devices showed reinforced conductance modulation in response to the application of different bottom-gate biases. Furthermore, the introduction of an additional gate provided access to an additional presynaptic input, allowing superlinear integration of synaptic weights for more efficient update processes.