To address the excessive consumption of fossil fuels, a tremendous development of clean and renewable energy sources is taking place in modern society, highlighting the significant position of electrochemical e. Benefiting from fast proton diffusion dynamics, aqueous metal-proton batteries (. As the demand for clean and renewable energy source increases, rechargeable batteries are indispensable for electrochemical energy storage,1, 2, 3, 4, 5, 6, 7, 8, 9 and in p. In AMPBs, cathode materials have a strong tendency to store protons, and this can be achieved by rational design of both the cathode and the electrolyte. Although a full understanding of. Organic compoundsThe typical proton-storage organic compounds usually contain carbonyl (C=O) and/or imino moiety (=N−) redox centers (Figure 2), and th. Although many types of materials can store protons, not all of them can be used as the cathode in AMPBs. First, the electrolyte should be compatible with the proton-storage materials.