Multifunctional conductive-carbon additives, Mo-Ni@NPCs, Sulfide solid electrolytes, Cathodes interfaces stabilities, All-solid-state lithium batteries, Technology

Highlights This work provides a brand-new approach to the “conversion-protection” strategy to overcome the drawbacks of composite cathode interfaces. The Mo3Ni3N not only makes it difficult for hydroxide groups (-OH) to survive on the surface but also allows the in situ surface reconstruction to generate the ultra-stable MoS2-Mo3Ni3N heterostructures after the initial cycling stage. The Mo-Ni@NPCs/LCO/LPSC-based ASSLBs achieve high-capacity retention (90.62%) and excellent cycle life (1000 cycles).