Can electrochemical energy storage be placed underground

What is deep underground energy storage?

Deep underground energy storage is the use of deep underground spaces for large-scale energy storage, which is an important way to provide a stable supply of clean energy, enable a strategic petroleum reserve, and promote the peak shaving of natural gas.

What is electrochemical energy storage?

So, the production of hydrogen gas by electrochemical methods and its storage should be considered as one of the methods for electrochemical energy storage. Traditionally, electrolysis is used to split a chemical compound into its elemental forms and water electrolysis has been utilized to produce hydrogen gas.

Can electrochemical energy storage be extended to Petrochemical Synthesis and production?

However, the authors believe that with the growth of renewable energy and intermittent energy sources, the concept of electrochemical energy storage can be extended to the electrochemical synthesis and production of fuels, chemicals, petrochemicals, etc. The vision of the approach is shown in Fig. 38.1 .

Why is the underground a good place to store thermal energy?

The underground is suitable for thermal energy storage because it has high thermal inertia, i.e. if undisturbed below 10-15 m depth, the ground temperature is weakly affected by local above ground climate variations and maintains a stable temperature [76, 77, 78].

How can electrical energy be stored at a massive scale?

Another route of storing electrical energy at a massive scale is its conversion into chemical-energy carriers by combining or integrating electrochemistry with biology. Here, we will give an overview of the potential of these biological-storage technologies.

Why are supercapacitors important in electrochemical storage?

These chemicals store energy in their chemical bonds, so the electrochemical synthesis of the hydrogen gas can also contribute towards electrochemical energy storage systems. After batteries, supercapacitors are considered the next most important device in the area of electrochemical storage.