▎ 摘　　要

NOVELTY - Preparing three-dimensional structure electrode without conductive agent and bonding agent comprises (i) adding graphene oxide into deionized water, ultrasonically dispersing, uniformly stirring in water bath, then filtering and washing, and vacuum drying to obtain the product A, (ii) reacting hydrochloric acid with product A in water bath, and vacuum drying to obtain the product B, (iii) stirring gelatin and deionized water in stirrer at 45-65℃, (iv) grinding product B and sodium alginate in a mortar for 20-30 minutes to obtain product C, (v) mixing the product C with the solution A to form uniform slurry, and coating to obtain the product D, (vi) placing the prepared copper(II) nitrate solution into the nano spraying bottle, uniformly spraying on the surface of product D, cross-linking to obtain product E and (vii) freezing and drying the product E and calcining to obtain the three-dimensional structure electrode. USE - Preparing three-dimensional structure electrode without conductive agent and bonding agent. ADVANTAGE - The three-dimensional structure electrode without conductive agent and bonding agent prepared by the method maintains the continuous and stable microstructure of the electrode material, and the carbon network compounded by biomass and gelatin alginate and high-conductivity metal Cu particles synergistically enhance the conductivity of the material, the preparation technique is simple, and the cost is low and no pollution.