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The Future Of Solar Energy Industry Development Depends On Energy Storage Technology
- May 24, 2018 -

Fossil energy can not be used for a long time. At present, the fossil energy stored is only enough for us to consume for 300 years, and there is a maximum of 150 years for the development of new energy in the world. Among them, the development of solar energy is the most important issue. Here's the power management Xiaobian together to find out about the relevant content.

Zhang Jiujun, a member of the Canadian Academy of Engineering, believes that energy is an indispensable part of human life, but the environment of the earth is also a prerequisite for human beings to live a healthy life. However, the current energy development model damages the global environment. In the case of essential energy, we urgently need to develop clean energy. The current use of fossil energy makes the world emit 31.6 Gt of carbon dioxide each year, resulting in the greenhouse effect that is causing the dissolution of glaciers, extreme weather (droughts, floods, etc.) and the demise of species.

In this context, solar energy has become an important direction for the adjustment of energy structure models in various countries because of its sustainability and cleanliness. However, according to statistics, solar power currently accounts for only 2% of all energy use. Why is such a promising energy development so slow?

Zhang Jiujun believes that the main reasons are the instability of solar power generation, the difficulty of power transmission, the difficulty of network integration, large investment, and long return period. However, as long as related energy storage technologies are developed, solar power generation can be stored, and problems such as unstable power generation can also be solved. Therefore, to develop clean energy such as solar energy, it is necessary to develop energy storage.

Mainstream energy storage technologies and trends

The most reliable energy storage method at present is electrochemical energy storage. Among them, the flow battery stores energy in the electrolyte, which has the advantage of being able to arbitrarily increase the capacity. However, the energy density is low, and new electrode materials need to be developed and the system optimized. Lithium-ion batteries are mainly used in the field of new energy vehicles. Eighty percent of the lithium-ion batteries that have been replaced by new energy vehicles can be used in energy storage. They have the advantages of high energy density and long life. However, lithium-ion battery life is still not enough compared to new energy vehicles and still needs development.

Taken together, lead-acid batteries are the most reliable and most commercially available large-scale batteries. It has the advantages of low cost and high safety, and the lead-acid battery material can be completely recycled and reused, which is its unique advantage. Therefore, lead-acid batteries can be well developed in solar energy storage. In the future, it is also necessary to optimize and develop electrodes, increase energy density, and reduce lead content.

In terms of new technologies, supercapacitors charge and discharge very quickly, but their energy density is relatively low and they need to be improved. In addition, carbon dioxide electrochemical reduction of energy storage, this technology can save energy while reducing carbon dioxide emissions, but there are problems such as catalyst life is too short, which is a very strategic direction of development.

Finally, Zhang Jiujun predicts that by 2025, the energy storage battery will be used in a large-scale application in the solar field, in which the flow battery will reach 3.8 billion US dollars, the lithium-ion battery can reach 26.1 billion US dollars, and the lead-acid battery market scale will reach 40 billion U.S. dollars.