Electrochemical artificial muscle system and electrochemical artificial muscle testing device

An electrochemical artificial muscle system, comprising:

• a working electrode, wherein the working electrode comprises a conductive yarn having a coiled or helical structure;
• a counter electrode, wherein the counter electrode comprises selected metal elements;
• and
• an electrolyte, wherein the electrolyte comprises an ionic liquid containing selected ions, and the selected ions comprises the selected metal elements;
• wherein the working electrode and the counter electrode are in contact with the electrolyte,
• when a specified voltage is applied to the working and counter electrodes to charge the electrochemical artificial muscle system, the selected ions are allowed to be inserted into the conductive yarn, wherein the conductive yarn contracts along a self-length direction, and when the specified voltage applied to the working and counter electrodes is removed, the inserted ions are lock in the conductive yarn and make the conductive yarn keep a contraction state;
• when the electrochemical artificial muscle system is externally discharged, the selected ions are allowed to detach from the conductive yarn, wherein the conductive yarn is restored to an initial length.