Electric field-enhanced underground hydrogen storage system and method

An electric field-enhanced underground hydrogen storage system, comprising an injection-withdrawal well, a first electrode column module, and a second electrode column module;

• wherein
• the injection-withdrawal well is used for injection and withdrawal of hydrogen, the first electrode column module represents an electrode of an electric field, and the second electrode column module represents another opposite electrode of the electric field;
• the first electrode column module and the second electrode column module respectively carry charges of equal magnitude but opposite sign, and are located at both sides at a same distance from the injection-withdrawal well, thereby forming a non-uniform electric field in a reservoir;
• the injection-withdrawal well extends from a surface well-site into an interior of the reservoir and is located at a central position in the electric field-enhanced underground hydrogen storage system as a whole;
• the first electrode column module is located at a side of the injection-withdrawal well, and has a height equal to a reservoir thickness of an underground hydrogen storage structure;
• and
• the second electrode column module is located at another side of the injection-withdrawal well opposite to the first electrode column module, and has a height equal to the reservoir thickness of the underground hydrogen storage structure.