A Gelation‐Assisted Approach for Versatile MXene Inks

Abstract Due to outstanding electrical conductivity and excellent solution processing ability, MXenes show great potential as inks for printed/coated electronic devices. To meet the rheological requirements, an ultra‐high concentration is usually involved formulate into versatile inks, however, low efficiency in rheology regulation, restacking issues of MXene sheets hinder their further applications. Herein, a gelation‐assisted approach proposed prepare with 3D interlinked network well address above issues. With effective combination cross‐linking swelling network, gel ink exhibits tunable properties by simply tuning water amount within sol‐gel system. Among various applicable printing/coating techniques ranging from painting extrusion printing, blade coating selected demonstrate advantage ink. The smooth layer structures greatly beneficial uniform dense zinc deposition high reversibility, endows aqueous ion batteries remarkable rate capability. This work provides alternative would offer new opportunities application advanced printable