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While its application for symmetric aqueous proton batteries is still in its infancy. Herein, a symmetric aqueous proton battery (APB) based on a bipolar poly(aminoanthraquinone) (PNAQ) is developed. The conductivity and solubility of PNAQ are significantly improved by introducing a polyaniline\u2010like skeleton. It is demonstrated that the quinone\u2010based moieties allow H<jats:sup>+<\/jats:sup> reversible uptake\/removal and the benzene ring\u2010based units achieve HSO<jats:sub>4<\/jats:sub><jats:sup>\u2013<\/jats:sup> adsorption\/desorption. The fabricated symmetric APB exhibits a high discharge capacity of 85.3\u00a0mA h g<jats:sup>\u20131<\/jats:sup> at 5 C and excellent rate performance (77\u00a0mA h g<jats:sup>\u20131<\/jats:sup> at 100 C). The good rate performance benefits from capacitance\u2010like ions diffusion mechanism. Furthermore, surprisingly, the system can also operate at \u221270 \u00b0C and shows superior electrochemical performance (60.4\u00a0mA h g<jats:sup>\u20131<\/jats:sup> at \u221270 \u00b0C).<\/jats:p>","DOI":"10.1002\/smtd.202100367","type":"journal-article","created":{"date-parts":[[2021,6,26]],"date-time":"2021-06-26T16:56:02Z","timestamp":1624726562000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":92,"title":["Bipolar Organic Polymer for High Performance Symmetric Aqueous Proton Battery"],"prefix":"10.1002","volume":"5","author":[{"given":"Tianjiang","family":"Sun","sequence":"first","affiliation":[{"name":"Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Nankai University  Tianjin 300071 P. R. 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