▎ 摘　　要

NOVELTY - Aqueous halogen-hydrogen secondary battery comprises electrolyte an aqueous solution containing halogen ions, where the positive electrode is used to carry out the redox reaction between the different valence states of halogen at the interface between and the electrolyte. The negative electrode is used to carry out the redox reaction of water or hydrogen ion to hydrogen at the interface between it and the electrolyte, and a catalyst carried on it. The separator is arranged between the positive electrode and the negative electrode. USE - Aqueous halogen-hydrogen secondary battery, preferably button cell, cylindrical battery or flow battery (claimed). ADVANTAGE - The aqueous halogen-hydrogen secondary battery has an excellent cycle life, can reach 60,000 cycles with almost no attenuation, high volume capacity of 18.9Ah L-1, and can carry out 100C high current discharge. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic reaction mechanism of an aqueous halogen-hydrogen secondary battery. (Drawing includes non-English language text).