Journal: Materials Horizons

Article Title: Hydrogel-based thermoelectrochemical cells for waste heat recovery under passive cooling conditions †

doi: 10.1039/d5mh00771b

Figure Lengend Snippet: (a) The output power measured experimentally for TEC cells with different electrode separation ( i.e. electrolyte or hydrogel thickness) as a function of voltage. (b) V oc and current density calculated with a complete COMSOL multiphysics simulation as a function of electrode separation. (c) The experimental result for the maximum output power as a function of electrode separation along with a 3rd-order polynomial fit just to underline the trend. (d) The convection velocity at the electrode/electrolyte interface obtained for cells with 10 mm width and different heights, explaining the reason for the performance decay after 20 mm (obtained from simulations).

Article Snippet: Using a comprehensive COMSOL Multiphysics model (Fig. S3 with parameters reported in Table S1, ESI ), we compare the thermal behavior of a conventional liquid electrolyte and a hydrogel-based electrolyte as a function of the electrode separations, while keeping the lateral dimensions of the cell constant (width W = 10 mm and depth D = 10 mm).

Techniques: Convection