Low-temperature-resistant ionic conduction hydrogel and preparation method and application thereof

The invention provides low-temperature-resistant ionic conduction hydrogel and a preparation method and application thereof, and relates to the technical field of composites. The preparation method comprises the following steps that mineral, water and organic acid are mixed, and an organic acid coated mineral solution is obtained; a natural polymer compound is dissolved, then heat preservation iscarried out, and a pregel solution is obtained; the organic acid coated mineral solution, acrylamide, ammonium persulfate, N,N-methylene bisacrylamide and tetramethylethylenediamine are added to the pregel solution in sequence, then heat preservation is carried out, and a hydrogel precursor solution is obtained; the hydrogel precursor solution stands after being degassed, and hydrogel is obtained;the hydrogel is soaked in a calcium chloride solution, and the low-temperature-resistant ionic conduction hydrogel is obtained. No conductive material needs to be additionally added, and the preparedhydrogel has a low-tempera