The widespread adoption of high-energy-density solid-state batteries (SSBs) requires cost-effective processing and the integration of solid electrolytes of about the same thickness as the polymer-membrane separators found in conventional lithium-ion batteries. In this Review, we critically discuss the current status of research on SSB processing as well as recent cost calculations, and compare SSB oxide electrolyte material and processing options in terms of performance parameters for thick versus thin ceramics. We identify as critical for future SSB design the need to capture the thermal processing budget and the stability of the phase of interest for oxide solid electrolytes, namely lithium phosphorus oxynitride, sodium superionic conductors, perovskites and garnets, in addition to the classic plots of Arrhenius lithium transport and the electrochemical stability window. Transitioning to SSB oxide electrolyte films with thicknesses close to the range for lithium-ion battery separators could provide ample opportunities for low-temperature ceramic manufacture and potential cost reduction.

高能量密度固态电池（SSB）的广泛采用要求具有成本效益的工艺以及集成厚度与传统锂离子电池中的聚合物膜隔板大致相同的固体电解质。在这篇评论中，我们批判性地讨论了SSB加工的研究现状以及最近的成本计算，并根据厚陶瓷和薄陶瓷的性能参数比较了SSB氧化物电解质材料和加工选项。我们认为，对于未来的SSB设计而言，至关重要的一点是，需要掌握热处理预算以及感兴趣的氧化物固态电解质相的稳定性，这些固态氧化物包括氧氮化锂磷，钠超离子导体，钙钛矿和石榴石，除了Arrhenius锂输运的经典图和电化学稳定性窗口外。过渡到厚度接近锂离子电池隔板范围的SSB氧化物电解质膜可以为低温陶瓷制造和降低成本提供充足的机会。