Ruthenium Anchored Laser-Induced Graphene as Binder-Free and Free-Standing Electrode for Selective Electrosynthesis of Ammonia from Nitrate.

Developing effective electrocatalysts for the nitrate reduction reaction (NORR) is a promising alternative to conventional industrial ammonia (NH) synthesis. Herein, starting from a flexible laser-induced graphene (LIG) film with hierarchical and interconnected macroporous architecture, a binder-free and free-standing Ru-modified LIG electrode (Ru-LIG) is fabricated for electrocatalytic NORR via a facile electrodeposition method. The relationship between the laser-scribing parameters and the NORR performance of Ru-LIG electrodes is studied in-depth.