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Recently, the Mn\n                    <jats:sup>2<\/jats:sup>\n                    \u207a\/MnO\n                    <jats:sub>2<\/jats:sub>\n                    deposition\u2013dissolution mechanism has gained attention because of its high specific capacity and cycling stability. High\u2010porosity, high\u2010surface area carbon felt has been widely employed as a cathode to facilitate Mn\n                    <jats:sup>2<\/jats:sup>\n                    \u207a transport and MnO\n                    <jats:sub>2<\/jats:sub>\n                    deposition, it suffers from non\u2010weldability, high cost, as well as low volumetric energy density. Constructing coat\u2010able slurries offers an alternative. Naturally abundant, low\u2010cost flake graphite is an ideal building block for slurry\u2010processed, weldable cathodes. However, flake graphite cathodes suffer from ion\u2010channel blockage by MnO\n                    <jats:sub>2<\/jats:sub>\n                    deposition due to their tightly packed structure. We found that incorporating spherical graphite (SG) expands the electrode framework, thereby creating additional mesopores and macropores. This structural modification enhances Mn\n                    <jats:sup>2<\/jats:sup>\n                    \u207a transport and effectively alleviates pore blockage. The optimized SG\u201050 electrode sustained over 300 cycles at an areal capacity of 1.5\u00a0mAh\u00a0cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    , with a coulombic efficiency of \u223c94% and energy densities of 166\u00a0Wh\u00a0L\n                    <jats:sup>\u22121<\/jats:sup>\n                    . The estimated cost is 3.4\u00a0$\/m\n                    <jats:sup>2<\/jats:sup>\n                    , demonstrating a remarkable advantage over conventional carbon felt (60\u00a0$\/m\n                    <jats:sup>2<\/jats:sup>\n                    , 11\u00a0Wh\u00a0L\n                    <jats:sup>\u22121<\/jats:sup>\n                    ). This work provides a practical electrode design strategy for slurry\u2010coated, weldable cathodes in aqueous zinc\u2013manganese systems involving dissolved redox species.\n                  <\/jats:p>","DOI":"10.1002\/smll.202512899","type":"journal-article","created":{"date-parts":[[2025,12,23]],"date-time":"2025-12-23T11:39:59Z","timestamp":1766489999000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A Weldable, Low\u2010Cost Graphite\u2010Based Electrode for Mn\n                    <sup>2+<\/sup>\n                    \/MnO\n                    <sub>2<\/sub>\n                    Redox Chemistry with High Volumetric Energy Density"],"prefix":"10.1002","volume":"22","author":[{"given":"Zeqin","family":"Hu","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering and Energy Technology Shanghai Institute of Technology  Shanghai P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianjun","family":"Su","sequence":"additional","affiliation":[{"name":"Department of Chemistry City University of Hong Kong  Hong Kong P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yiting","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering and Energy Technology Shanghai Institute of Technology  Shanghai P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Youyi","family":"Peng","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering and Energy Technology Shanghai Institute of Technology  Shanghai P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering and Energy Technology Shanghai Institute of Technology  Shanghai P. R. China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-5290-3533","authenticated-orcid":false,"given":"Huan","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering and Energy Technology Shanghai Institute of Technology  Shanghai P. R. China"},{"name":"Applied Electrochemistry School of Engineering Sciences in Chemistry Biotechnology and Health KTH  Stockholm Sweden"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sheng","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering and Energy Technology Shanghai Institute of Technology  Shanghai P. R. 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