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Herein, we demonstrate this concept through the rational design of high\u2010entropy spinel oxide\u2010decorated Ti\n                    <jats:sub>3<\/jats:sub>\n                    C\n                    <jats:sub>2<\/jats:sub>\n                    T\n                    <jats:italic>\n                      <jats:sub>x<\/jats:sub>\n                    <\/jats:italic>\n                    MXene (HEO\/MX) nanoarchitectures that simultaneously catalyze both hydrogen evolution reaction (HER) and selective methanol\u2010to\u2010formate conversion. The well\u2010dispersive high\u2010entropy spinel oxides afford numerous catalytically active centers as well as multiple electronic hybridizations, while the ultrathin MXene nanosheets enable the intimate interfacial interactions and guarantee a rapid electron transport rate. Accordingly, the newly\u2010developed HEO\/MX hybrid nanoarchitecture exhibits optimized anodic MOR performance with an oxidation voltage of 1.53\u00a0V vs RHE (0.12\u00a0V lower than that of OER) to achieve a current density of 100\u00a0mA cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    , and simultaneously it requires a cathodic HER overpotential of 140\u00a0mV to achieve 10\u00a0mA cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    in alkaline medium. Strikingly, a coupled alkaline HER\u2010MOR electrolytic cell assembled with the bifunctional HEO\/MX electrocatalyst requires only 1.59\u00a0V to derive a current density of 10\u00a0mA cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    , more competitive than that of conventional HER\u2013OER system based on commercial Pt\/C || RuO\n                    <jats:sub>2<\/jats:sub>\n                    combination (1.68\u00a0V).\n                  <\/jats:p>","DOI":"10.1002\/smll.202514116","type":"journal-article","created":{"date-parts":[[2026,1,27]],"date-time":"2026-01-27T12:10:51Z","timestamp":1769515851000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["High\u2010Entropy Spinel Oxides\u2010Decorated MXene Nanoarchitectures for Efficient Methanol Oxidation\u2010Assisted Hydrogen 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