  In this work, we develop a twist-dependent electrochemical activity map,
combining a tight-binding electronic structure model with modified
Marcus-Hush-Chidsey kinetics in trilayer graphene. We identify a
counterintuitive rate enhancement region spanning the magic angle curve and
incommensurate twists of the system geometry. We find a broad activity peak
with a ruthenium hexamine redox couple in regions corresponding to both magic
angles and incommensurate angles, a result qualitatively distinct from the
twisted bilayer case. Flat bands and incommensurability offer new avenues for
reaction rate enhancements in electrochemical transformations.
