Robust Ink-Formulated Single-Atom Catalyst Electrodes for Anodic and Cathodic Organic Electrosynthesis

The growing interest in organic electrocatalysis highlights the need for electrode materials that operate reliably in organic solvents.¹ To address stability and reproducibility limitations, we developed single-atom catalyst (SAC) inks deposited onto electrode supports for anodic and cathodic transformations. After optimizing ink formulation, evaluating binder stability in organic media, and standardizing deposition protocols, benzyl bromide reduction and benzyl alcohol oxidation were selected as model reactions. In both cases, modified electrodes outperformed graphite controls while maintaining catalyst-layer integrity. Ag-based electrodes improved benzyl bromide reduction mass balance by ~20%, while metal incorporation doubled benzyl alcohol oxidation yields. Binder effects significantly influenced anodic performance: Nafion enhanced Ni-based electrodes, whereas PEDOT improved Ag-based systems. These results demonstrate that tunable electrode-catalyst binder combinations provide a versatile alternative to conventional electrodes. Additionally, the low-cost and scalable deposition method enables straightforward integration into flow electrochemical systems.²