▎ 摘　　要

Utilizing ubiquitous thermal evaporation for electrical energy harvesting is considered as an effective way to develop future green energy. In this work, we develop a lyophilized-prepared sponge based moist-electric generator with a supramolecular assembly of poly (3,4-ethylenedioxythiophene): poly (styrene sulfonate) and graphene oxide (PPGO), which could efficiently harvest electric power from thermal evaporation under extreme thermal fluctuations. More importantly, the open circuit voltage of self-power PPGO generator can reach up to 2.13 V in moist air (RH 73%) under a temperature difference of 110 K without any mechanical energy input, and 0.49 V cm(-2) for an apparent area of similar to 1.25 cm(2) under natural evaporation. In addition, the in situ Raman spectra indicate that the spontaneous symmetry breaking induced by assembly of PEDOT:PSS networks is responsible for the enhanced moist-electric power harvesting performance, which provides a convenient paradigm for converting waste heat and humid environmental energy into electricity.