fig1
Figure 1. Overview of hydrogel-based ionic thermoelectric (i-TE) materials. Reproduced with permission[35-40]. Copyright 2024, Elsevier Ltd.; Copyright 2025, Royal Society of Chemistry; Copyright 2023, Elsevier Ltd.; Copyright 2024, Elsevier Ltd.; Copyright 2022, Elsevier Ltd.; Copyright 2023, Wiley-VCH GmbH.