fig8

Figure 8. Sweat-based biofuel cells. (A) Illustration of lactate-based sweat-activated BFC. Reproduced under the terms and conditions of the CC BY^[120]. Copyright 2023, Author(s), published by MDPI; (B) Flexible enzymatic fuel cell utilizing 1, 4-naphthoquinone/MWCNT-Modified bio-anode and PVA hydrogel electrolyte. Reproduced with permission^[130]. Copyright 2022, Elsevier; (C) Illustration of glucose-based sweat-activated biofuel cells. Reproduced with permission^[137]. Copyright 2022, Wiley-VCH; (D) Glucose Biofuel Cell on a Cotton Textile Cloth Platform. Reproduced with permission^[138]. Copyright 2019, Elsevier; (E) Illustration and demonstration of ethanol-based sweat-activated biofuel cells. Reproduced with permission^[139]. Copyright 2021, Elsevier; (F) Illustration of bacteria metabolism-based sweat-activated biofuel cells. Reproduced with permission^[140]. Copyright 2022, American Chemical Society; (G) Self-powered e-skins generate electricity from sweat-eating bacteria. Reproduced with permission^[141]. Copyright 2020, Elsevier. BFC: Biofuel cells; MWCNT: multi-walled carbon nanotube; PVA: polyvinyl alcohol.