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Figure 2. The preparation process and performance of biocompatible electrode patch. (A) The preparation process of the chitosan-acetate biocompatible conductive film; (B) The adhesion mechanism of the chitosan-acetic acid biocompatible conductive film; (C and D) Stress-strain curve alterations and impedance modifications following the formation of films through the addition of glycerol at varying volume ratios; (E) Volt-Ampere characteristic response of chitosan-acetate (8%) flexible films at varying scan rates; (F and G) The impedance-frequency curve response of a commercial conductive gel and chitosan-acetic acid conductive gel under both dry and sweaty human skin conditions.