Fig. 5: Osmotic energy conversion. | Nature Communications

Fig. 5: Osmotic energy conversion.

From: Synthesis of crystalline two-dimensional conjugated polymers through irreversible chemistry under mild conditions

Fig. 5

a Schematic of the selective ion transport through 2DCPs. b The I–V curves of the DTMP-DhTPA film in KCl solution at pH = 3.5. Inset: conductance measurement of film under different KCl concentrations. c Osmotic current and osmotic voltage in various KCl salinity gradients. The sample size (n) of the experimental is n = 1, and the error bars are standard deviations with three independent experiments. d I–V curves of the DTMP-DhTPA film recorded under 0.5/0.01 M NaCl of pH = 3.5. Inset: comparison of the output power density in KCl and NaCl with concentration gradient of 50 at pH = 3.5. e Current density and output power density depend on the external load resistance in 0.5/0.01 M NaCl. f Comparison of the osmotic energy generation performance of the DTMP-DhTPA film with previously reported results, except for single MoS2 nanopore, single BN nanotube, and monolayer COF. Corresponding membranes were shown in Supplementary Table 2.

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