Prussian Blue Analog Incorporating a Prussian Blue analog (PBA) as a functional additive mitigates moisture-induced degradation of sulfide solid electrolytes and can even restore pre-degraded materials. The PBA's open framework scavenges water-derived species and stabilizes the electrolyte/electrode interface, preserving Li-ion transport. As a result, all-solid-state cells exhibit improved interfacial stability, reversible capacity retention, and durable cycling under humid exposure conditions. More details can be found in the Research Article by Sumin Ko, Hyebin Jeong, Changshin Jo, and Sang-Min Lee (DOI: 10.1002/adma.202516613).
Ko et al. (Sun,) studied this question.