fig3
Figure 3. Thermoelectric performance of the thermocells. (A) Current density versus voltage output and corresponding power density of the pristine, 0.5 M-GTC, 50 mg mL-1-CTC, and 0.5 M-GCTC systems at a ΔT of 50 K; (B) Comparison of ηcr and Se values with various [Fe(CN)6]3-/4--based thermocell systems documented in the literature from perspectives of optimization toward electrolyte, electrode, and both electrolyte and electrode, respectively. A dashed line indicates the commercialization threshold of ~5% for thermocells [Supplementary Table 1]. GCTC: GdnHCl-CH-co-regulated thermocell; GTC: GdnHCl-regulated thermocell; CTC: