The invention discloses a
brownish red flexible electrochromic
assembly and a preparation method thereof, and belongs to the technical field of flexible
electrochromism. The prepared electrochromic
assembly comprises a flexible substrate, a
working electrode, an
electrolyte, a counter
electrode and a flexible packaging material with a structural color, the structural color is prepared on the flexible packaging material, so that the
assembly is endowed with color and color changing effects; the production cost of the assembly is effectively reduced by adopting a full-liquid-phase
coating process; the Li < + > doped Zn (PO4) x gel is adopted, so that the
ion conduction efficiency of the
electrolyte layer can be effectively improved, and the cycle life of the electrochromic assembly can be prolonged; the composite color-changing layer enables the assembly to be high in
color saturation and not easy to fade; therefore, the prepared electrochromic assembly is high in flexibility, flexible in size, multiple in color variety, high in saturation degree, not prone to color
fading, long in cycle life and high in
ion conduction efficiency; and the preparation process is simple, large-scale production operation is easy, and the preparation method has important application value in the technical field of flexible
electrochromism.