Preparation method of wood-based evaporation-hydrovoltaic cooperative power generation device with sandwich structure

Abstract

The invention provides a preparation method of a wood-based evaporation-hydrovoltaic cooperative power generation device with a sandwich structure. The preparation method comprises the following steps: respectively preparing uniformly dispersed PVA and carbon black dispersion liquid; uniformly mixing the two dispersion liquids according to a certain proportion to obtain PVA carbon black mixed dispersion liquids with different concentrations; uniformly coating the mixed dispersion liquids with different concentrations on the front surface and the back surface of a clean beech chip for later use; coating the back surface of the beech chip with a silver electrode by a blade coating method; placing the beech chip on the water surface in the mode that the included angle between the back face of the beech chip and the water surface is 45 degrees, and then obtaining the wood-based evaporation-water hydrovoltaic cooperative power generation device of the sandwich structure. The device has low cost, strong light absorption capacity, and the beech chip along the wood growth direction is used as a substrate, the sufficient and continuous supply of water in an evaporation layer and a photo-thermal layer can be guaranteed, the photo-thermal efficiency is high, the power generation mode is spontaneous, the performance is stable, solar energy and surrounding environment heat are fully used, and output power and fresh water output are increased.

Description

technical field

[0001] The invention relates to the field of preparation of hydrovoltaic power generation devices, in particular to a method for preparing a wood-based evaporation-hydrovoltaic synergistic power generation device with a sandwich structure. Background technique

[0002] Evaporation is ubiquitous on the earth, and making full use of solar energy to evaporate water can effectively alleviate people's growing concerns about water resources and energy shortages. This despite significant progress in exploring alternative combinations of unutilized or wasted thermal / solar energy for multifunctional applications. However, how to efficiently integrate the desired functions into a photothermal material for widespread solar harvesting remains a great challenge. Contains a vast reservoir of low-level energy in the form of gaseous water molecules and droplets. It has now been found that many functionalized materials can generate electricity directly through the interacti...

Images