▎ 摘　　要

NOVELTY - Thermoelectric power generation device comprises ion P-N junction, catalytic layer, gas diffusion layer, and current collecting unit. The ion P-N junction includes intermediate layer, P-type hydrogen ion exchange membrane (110) and an N-type anion exchange membrane arranged on both sides of the intermediate layer, the P-type hydrogen ion exchange membrane and the N-type anion exchange membrane (120) are ion polymer membranes, ion P-N junctions are connected through the intermediate layer. The catalytic layer includes a first catalytic layer (211) and a second catalytic layer(221). The current collecting unit includes a first and second current collecting unit arranged upper end of P-type hydrogen ion exchange membrane and the N-type anion exchange membrane of the ion P-N junction. The gas diffusion layer (222) is arranged on outside of catalytic layer. The collecting unit is arranged on outside of gas diffusion layer. The middle layer (131) is water dissociation unit. USE - Device used for thermoelectric power generation. ADVANTAGE - The device can efficiently utilize low-grade heat energy, environment-friendly, non-carbon discharge, compared with the liquid electrolyte temperature difference battery, not limited by the concentration polarization, no electrolyte pollution, convenient packaging and integration, which is good for batch production and application; has no moving component and can be free of maintenance; and utilizes the catalyst, which has small dosage, no risk, and there is no net consumption in the whole system. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of thermoelectric power generation device. 110P-type hydrogen ion exchange membrane 120N-type anion exchange membrane 131Middle layer 211First catalytic layer 221Second catalytic layer 222Gas diffusion layer