Low-cost reverse electroosmosis method salt difference power generation device and preparation method

Abstract

The invention discloses a low-cost reverse electroosmosis method salt difference power generation device and a preparation method. The low-cost reverse electroosmosis method salt difference power generation device is formed by connecting a plurality of power generation units in series, wherein each power generation unit comprises a low-salt water cavity, high-salt water cavities, a cation directional movement ion exchange device and an anion directional movement ion exchange device, wherein the above cavities and the devices are independently arranged; a salt difference is formed between the low-salt water cavity and the high-salt water cavity; the cation directional movement ion exchange device and the anion directional movement ion exchange device are arranged between the adjacent high-salt water cavity and the low-salt water cavity; and the cation directional movement ion exchange device can independently select cation selective gel, cation and anion exchange resin or cation and anion exchange paper. By use of the method, the problem of high power generation cost of a salt difference battery which uses an ion exchange membrane at present can be avoided, the cation selective gelor the ion exchange resin with a low price is used, in addition, an assembling structure is simple, and salt difference energy can be more economically utilized.

Description

technical field [0001] The invention relates to a low-cost reverse electroosmosis salinity difference power generation device and a preparation method. Background technique [0002] Energy is an important material basis for economic development and a prerequisite for improving people's living standards. The fossil energy that the world relies on today is being exhausted, and the energy crisis is approaching mankind step by step. In addition, the use of a large amount of fossil fuels has also caused global Environmental pollution and destruction of the ecological environment. Therefore, the development and utilization of clean renewable energy has become a top priority. [0003] Salt difference energy is the chemical potential difference energy between seawater and freshwater or between two kinds of seawater with different salinity concentrations. It is a renewable energy source with the highest energy density in ocean energy. Usually, salt water power supply uses the differ...

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Problems solved by technology

like figure 1 As shown, the high-salt gel 5 is polymerized from neutral monomers and contains a high concentration of NaCl, and the anion-exchange gel 7 is a gel polymerized from anionic monomers, which can only allow sodium ions to pass through; Salt gel 6 is a neutral gel containing a very low concentration of NaCl; cation exchange gel 8 is a gel polymerized by cationic monomers, which can only allow chloride ions to pass through. The above four different gels are connected in series A gel battery with a voltage of 80mV can be obtained. If thousands of gel batteries are connected in series, the obtained power supply can generate a voltage similar to that of an electric eel. The battery formed by this method has disadvantages, that is, high-salt gel The preparation process of low-salt gel is relatively complicated, and if it is fixed in the battery, it cannot be replaced. As time goes by, the battery will obviously age and the electric shock will be weakened.

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