{
    "protocol": "A thermogalvanic dual-network hydrogel is fabricated using [Fe(CN)6]^{3-/4-} as a redox couple along with lithium magnesium silicate, Cdm^{+}, and lithium bromide as key electrolytes. These components are combined to optimize the interconnected porous structure of the gel, which is designed to exhibit excellent mechanical and thermoelectric properties.Synthesize a thermogalvanic hydrogel using acrylamide as the matrix, gelatin as the reinforcing agent, and [Fe(CN)6]^{3-/4-} as the redox couple. Incorporate lithium magnesium silicate (LMS) to enlarge pore size and include Li+ and Br- to extend effective working time, while adding Gdm+ to significantly increase thermopower to 4.01 mV K^{-1}.The TG-DNH is prepared primarily based on an aqueous solution polymerization method. First, acrylamide, LMS, and gelatin were added to 70 mL of deionized water and stirred at 70 °C until wholly dissolved to obtain a mixed solution. After the mixed solution was cooled down, N,N'-methylene bisacrylamide and initiator ammonium persulfate were added sequentially and stirred at room temperature until completely dissolved. Then, catalyst N,N,N',N'-Tetramethylethylenediamine was added, gently mixed, and quickly poured into the prepared mold for approximately 2 hours to obtain DNH. Finally, the prepared DNH was immersed in a mixture of [Fe(CN)6]3-/4-, guanidine hydrochloride, and lithium bromide for 2 hours to obtain the TG-DNH."
}