Cover Feature: Moisture‐Assisted Silylation Triggered by Silicone Adhesives: A Hidden Electrolyte Decomposition Mechanism in Supercapacitors (ChemSusChem 9/2026)

The Cover Feature illustrates a previously overlooked degradation pathway in commercial-scale supercapacitors. Under high voltage and trace moisture, silicone-based adhesives in Kapton® tape release reactive trimethylsilyl species that initiate electrolyte decomposition. Lightning symbolizes electrical stress, while molecular motifs highlight the formation of trimethylsilyl acetamide (TMSA) through moisture-assisted silylation. The artwork emphasizes how non-electroactive auxiliary materials can unexpectedly drive parasitic reactions, underscoring the importance of full-system materials compatibility in high-voltage energy storage devices. More information can be found in the Research Article by M. Sawangphruk and co-workers (DOI: 10.1002/cssc.202501768).