Humans have long wanted to put solar energy in a bottle, carry it everywhere, and access it at any time. The use of renewable energy to electrolysis water to produce hydrogen, and then storage of hydrogen energy in the form of green methanol, with this "storage of solar energy" function, green methanol is graphically called "liquid sunlight" by scientists.
"Liquid sunlight" converts hydrogen energy into liquid fuel methanol on the basis of green hydrogen energy, and its principle is the process from renewable energy such as solar energy to hydrogen energy to methanol. In this process, both hydrogen and methanol act as energy carriers for renewable energy sources such as solar energy. Hydrogen molecular energy density is high, but the bulk density is very low, storage and transportation is difficult, the current high-pressure gas storage and liquid hydrogen storage capacity is not more than 7wt.%. The "liquid sunlight" is converted from green hydrogen energy, and its hydrogen storage capacity is much higher than that of high-pressure gaseous hydrogen and liquid hydrogen, which is easy to store and transport, and easier to achieve long-term storage and safe transportation of hydrogen, greatly alleviating safety problems, which is a huge advantage of green methanol.