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

A sandwich and wood-based technology, applied in the direction of electrical components, generators/motors, etc., to achieve the effects of easy material availability, increased evaporation area, and easy large-scale preparation

Active Publication Date: 2021-04-30
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, how to efficiently integrate the required functions into a photothermal material for widespread solar harvesting remains a great challenge.

Method used

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

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Embodiment 1

[0031] A method for preparing a wood-based evaporation-hydrovoltaic synergistic power generation device with a sandwich structure: comprising the following preparation steps:

[0032] S1, cutting the beech wood with uniform thickness into rectangular beech wood chips, washing them with absolute ethanol and deionized water for subsequent use;

[0033] S2. Use 1799 type PVA and deionized water to prepare the PVA dispersion at a concentration of 100mg / ml, and then heat the PVA dispersion in an oil bath at a temperature of 95°C for 2 hours;

[0034] S3, use carbon black particles with an average particle diameter of 35-40nm and deionized water as a 50mg / ml proportioning carbon black particle dispersion, utilize a magnetic stirrer to stir for 15min, and then utilize a cell disruptor to carry out the carbon black particle dispersion Disperse to obtain a uniform carbon black dispersion, wherein the ultrasonic power of the cell disruptor is 450W, the diameter of the horn is 6mm, and t...

Embodiment 2

[0041] A method for preparing a wood-based evaporation-hydrovoltaic synergistic power generation device with a sandwich structure: comprising the following preparation steps:

[0042] S1. Cut the beech wood with a uniform thickness of 0.3cm into 3cm×4cm rectangular beech wood pieces, wherein the length along the wood growth direction is 4cm, first use 200mL absolute ethanol and 200mL acetone to clean, and then use 200mL deionized water to wash and set aside;

[0043] S2. Use 1799 type PVA and deionized water to mix 100ml of PVA dispersion at a concentration of 100mg / ml, and then heat the PVA dispersion in an oil bath at a temperature of 95°C for 2 hours;

[0044] S3, use carbon black particles with an average particle size of 20-35nm and deionized water to form a 50ml carbon black particle dispersion according to the concentration of 50mg / ml, stir with a magnetic stirrer for 15min, and then use a cell disruptor to crush the carbon black particle dispersion Disperse to obtain a...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N11/00
CPCH02N11/002
Inventor 黄玮曹阳涂进春王小红王洁琼张可喜丁雷刘晶
Owner HAINAN UNIVERSITY
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