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There are different strategies to increase supercapacitor performance by improving the active materials used in the electrodes, the type of electrolyte used or even the configuration employed in the cell. In this work, a combination of these strategies is presented with the use of different active materials, electrolytes, and symmetric vs. asymmetric configuration. The supercapacitor with asymmetric configuration using the graphene\u2010doped carbon xerogel in the negative electrode and the manganese oxide in the positive electrode, along with the use of Na<jats:sup>+<\/jats:sup>\u2010form Aquivion electrolyte membrane as solid electrolyte, seems to be a promising combination to obtain a substantial enhancement of both gravimetric and volumetric capacitance. Furthermore, the device presents great stability in a wide operational voltage window from 0 to 1.8\u2005V and with a neutral pH polymer electrolyte which contributes to improve the performance, safety, and long cycle life of the device.<\/jats:p>","DOI":"10.1002\/celc.202300161","type":"journal-article","created":{"date-parts":[[2023,10,5]],"date-time":"2023-10-05T06:20:59Z","timestamp":1696486859000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Graphene Doped Carbon\u2010Gels and MnO<sub>2<\/sub> for Next Generation of Solid\u2010State Asymmetric Supercapacitors"],"prefix":"10.1002","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5003-0035","authenticated-orcid":false,"given":"Natalia","family":"Rey\u2010Raap","sequence":"first","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda del Carbono (INCAR) CSIC  33011 Oviedo Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6954-2348","authenticated-orcid":false,"given":"Samantha L.","family":"Flores\u2010L\u00f3pez","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda del Carbono (INCAR) CSIC  33011 Oviedo Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1377-8351","authenticated-orcid":false,"given":"Luc\u00eda","family":"dos Santos\u2010G\u00f3mez","sequence":"additional","affiliation":[{"name":"Universidad de M\u00e1laga, Dpto. de Qu\u00edmica Inorg\u00e1nica Cristalograf\u00eda y Mineralog\u00eda  29071 M\u00e1laga Spain"}]},{"given":"Antonino","family":"Brigand\u00ec","sequence":"additional","affiliation":[{"name":"Istituto di Tecnologie Avanzate per L'Energia \u201cNicola Giordano\u201d CNR-ITAE  98126 Messina Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8928-2857","authenticated-orcid":false,"given":"Minju","family":"Thomas","sequence":"additional","affiliation":[{"name":"Istituto di Tecnologie Avanzate per L'Energia \u201cNicola Giordano\u201d CNR-ITAE  98126 Messina Italy"}]},{"given":"Antonia E.","family":"Stoyanova","sequence":"additional","affiliation":[{"name":"Institute of Electrochemistry and Energy Systems Bulgarian Academy of Sciences  1113 Sofia Bulgaria"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9181-6667","authenticated-orcid":false,"given":"Francesco","family":"Lufrano","sequence":"additional","affiliation":[{"name":"Istituto di Tecnologie Avanzate per L'Energia \u201cNicola Giordano\u201d CNR-ITAE  98126 Messina Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5388-1169","authenticated-orcid":false,"given":"Ana","family":"Arenillas","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia y Tecnolog\u00eda del Carbono (INCAR) CSIC  33011 Oviedo Spain"}]}],"member":"311","published-online":{"date-parts":[[2023,10,5]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1002\/adfm.202108107"},{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1109\/ACCESS.2019.2908558"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.matre.2020.12.002"},{"key":"e_1_2_8_4_1","unstructured":"M. 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