This invention relates to the field of electrochemical material preparation technology, specifically disclosing an apparatus for large-scale manufacturing of high-performance water
electrolysis electrodes using the
Joule heating effect. The apparatus includes a frame body, an unwinding roller, a winding roller, and a conductive carrier
conveyor belt transporting the materials. A spraying unit, a pre-
drying unit, and a
Joule heating unit are sequentially arranged along the
conveyor belt's movement direction. The
Joule heating unit includes a first conductive roller and a second conductive roller electrically connected to the positive and negative terminals of a DC power supply, respectively. When the second conductive roller contacts the moving conductive carrier
conveyor belt, current flows through the conveyor belt, generating Joule heat and inducing a
thermochemical reaction in the precursor loaded on its surface. This apparatus achieves integrated, streamlined operation from spraying and pre-
drying to high-temperature reaction. Simultaneously, the direct, instantaneous, and localized heating method based on the
Joule effect significantly reduces heat loss and promotes in-situ reaction and firm bonding of the catalyst precursor on the conductive carrier surface, effectively improving the
electrode's catalytic activity and long-term stability.