Ultra-high throughput manufacturing method for composite solid-state electrolytes

Abstract

Summary The transition from liquid organic electrolytes to solid-state electrolytes promises safer and more energy-dense lithium ion batteries. Although this technology has been demonstrated, the question of how to manufacture solid-state batteries at the cost and scales needed to be competitive remains. Here we propose and demonstrate curtain coating as a method for manufacturing composite solid-state electrolytes in roll-to-roll processes at web-speeds of over 80 m/min. The method is compatible with existing lithium-ion battery electrode manufacturing lines and is able to produce uniform electrolyte films with thicknesses below 15 micrometers.

High‐Throughput Experimentation and Computational Freeway Lanes for Accelerated Battery Electrolyte and Interface Development Research

“…Baada and Wood used this method to synthesize thin layer solid state electrolyte and demonstrated an 80 m min −1 production of the uniform thin film. [ 110 ] Nevertheless, the coating speed of solid electrolytes is still not compatible with the coating speed of 2000 m min −1 in other industries due to high viscosity and high solid contents slurries. A suitable slurry formulation therefore needs to be considered for the curtain coating.…”

Research progress in stable interfacial constructions between composite polymer electrolytes and electrodes

“…Solid-state batteries (SSBs), with improved safety and a wider electrochemical stability window compared with liquid ones that have flammability and liquid leakage issues, have become an exciting research direction and offer the most promising candidates for the next-generation energy storage equipment. [4][5][6][7][8][9][10][11] In addition, SSBs can realize the utilization of the 'holy grail', the Li metal anode, which has an extremely low redox potential and the highest theoretical specific capacity, to meet the increasing demand for higher battery energy density. 12,13 There are two remaining bottlenecks for SSBs, however, that hinder their further commercialization.…”

“…Therefore, increasing the redox voltage window of the electrolyte and constructing a robust cathode-electrolyte interphase (CEI) and a stable solidelectrolyte interphase (SEI) on the anode remain challenging. (4) The incompatibility of the interface between the CPEs and the electrode material is mainly due to the inhomogeneity of the electrolyte composition. This will lead to the increase of interface internal resistance and the continuous increase of interface side reactions.…”

Ultrafast Crystallization and Sintering of Li1.5Al0.5Ge1.5(PO4)3 Glass and Its Impact on Ion Conduction

“…This Article (a schematic representation of its content is given in Figure ) contributes to unraveling the impact of UHS on the physical properties and Li + conduction of crystalline LAGP obtained from LAGP glassy powders. These processing conditions (i.e., short processing time and ambient atmosphere) are conducive to the large-scale production of solid-state batteries. , In fact, applying UHS in place of furnace sintering, which has a high impact on energy demand and costs, can represent a viable and less time- and energy-intensive alternative.…”

“…These processing conditions (i.e., short processing time and ambient atmosphere) are conducive to the large-scale production of solidstate batteries. 40,41 In fact, applying UHS in place of furnace sintering, which has a high impact on energy demand and costs, 19 can represent a viable and less time-and energyintensive alternative.…”