fig9

Figure 9. (A) Schematic diagram of PEDOT: PSS fiber treated by H₂SO₄; (B) Partially enlarged SEM image of PEDOT: PSS fiber; (C) Effect of H₂SO₄ treating time on the S²σ fiber; (D) Evaluation of mechanical properties of PEDOT: PSS fiber and film by post-treatment; (E) Performance of fiber-based F-TEG under a ΔT of 10 K; (F) Practical application of the fiber-based device. Reproduced with permission^[205]. Copyright 2020 ELSEVIER. (G) S and σ of fiber-based materials with different contents of cotton fiber; (H) schematic diagram and photos of the as-fabricated device, and (I) Relationship between device performance and ΔT. Reproduced with permission^[207]. Copyright 2020 ELSEVIER. PEDOT: PSS: Poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate); F-TEG: flexible TE generator.