Sunlight liquid energy storage-solar hydrogen production-fuel cell cyclic utilization method

Abstract

The invention discloses a sunlight liquid energy storage-solar hydrogen production-fuel cell cyclic utilization method. The sunlight liquid energy storage-solar hydrogen production-fuel cell cyclic utilization method is characterized by comprising the following steps: (1) concentrating solar energy, introducing carbon dioxide and water into a reactor, generating organic liquid under the action of a first catalyst, and storing the obtained organic liquid; and (2) catalyzing the organic liquid to generate hydrogen and carbon dioxide by using a second catalyst under the condition of solar energy concentration and heating, and driving a fuel cell by using the generated hydrogen to generate electric energy. The first catalyst adopts, but is not limited to, at least one of titanium dioxide (TiO2), a carbon nitride material (g-C3N4) and cadmium sulfide (CdS). According to the sunlight liquid energy storage-solar hydrogen production-fuel cell cyclic utilization method, cyclic conversion of solar energy-liquid fuel energy-hydrogen energy-electric energy can be achieved, and meanwhile, a series reaction of solar energy storage, clean new energy preparation and fuel cell utilization is achieved.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, in particular to a sunlight liquid energy storage-solar hydrogen production-fuel cell recycling method. Background technique [0002] At present, humans mainly rely on non-renewable fossil fuels (such as coal, oil, natural gas, etc.) as the main energy source, which not only brings about a huge energy crisis, but also causes serious air pollution (such as carbon dioxide CO 2 Explosive growth causing the greenhouse effect, etc.). With the rapid development of global industry, energy consumption is increasing day by day. According to statistics, it reached 15 terawatts (TW) in 2010 and is expected to reach 27 TW by 2050; 2 The total will reach 590ppm, and the global average temperature will rise by 1.9℃, which will have catastrophic consequences. Therefore, there is an urgent need to develop green, clean, and renewable new energy sources to replace traditional fossil fuels and re...

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Problems solved by technology

But currently CO 2 The reduction efficiency is low and the selectivity is poor, which seriously inhibits the conversion rate of solar energy, which is a huge challenge for us

In addition, the energy density of liquid fuels such as methanol is low, which cannot achieve efficient energy utilization and cannot meet the energy needs of new energy vehicles and other fields. Therefore, how to realize the conversion of sunlight liquid energy (fuels such as methanol) into hydrogen with high energy density Difficulties of current research

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