The　development　of　flexible　wearable　devices　requires　energy　supply　devices　with　high　flexibility　and　stretchability.　Thermoelectric　ionic　hydrogels　possess　characteristics　of　high　flexibility　and　stretchability　and　can　be　used　as　heat　conversion　devices　to　transform　low-grade　heat　energy　into　electrical　energy.　Recently,　studies　of　ionic-thermoelectric　hydrogels　exhibit　high　thermopower　(or　Seebeck　coefficient),　but　their　raw　materials　are　typically　laced　with　strong　alkalis　or　heavy　metals,　which　makes　them　highly　toxic　and　limits　their　potential　applications.　In　order　to　enhance　the　thermopower　in　this　study,　we　employed　PEDOT:PSS　as　an　n-type　dopant　in　PAAm　hydrogels　to　induce　counterion　condensation.　This　process　immobilizes　cations,　thereby　amplifying　the　ion-thermal　migration　rate　disparity　in　the　Soret　effect　and　enhancing　the　thermopower.　Furthermore,　the　thermoelectric　performance　was　optimized　by　adjusting　the　dosage　of　the　initiator　ammonium　persulfate　(APS).　The　experimental　results　showed　that　the　PEDOT:PSS/PAAm-based　ionic　hydrogel　exhibited　a　high　thermopower　of　-4.45　mV/K　when　the　concentration　of　APS　was　1　wt　%.　This　study　provides　an　approach　for　the　preparation　of　low-toxicity,　high-thermopower　n-type　thermoelectric　ionic　hydrogels.