An ultrahigh-performance magnesium/sodium hybrid-ion battery (MNHB) is developed using ternary CoSe/NiSe/CuSe (CNCS) "micro-flowers" as cathode materials, working with a coordinative [MgCl][AlCl] and bis(trifluoroethylsulfonyl)imide anionic sodium salt in triglyme electrolyte. After 2000 cycles at 2.0 A g, the MNHB shows a stable capacity of 115.5 mA h g and a high Coulombic efficiency exceeding 99.8%. The battery shows very rapid charging, and good stability in extreme environments, providing new opportunities to develop other hybrid-ion systems.
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| http://dx.doi.org/10.1039/d4cc00623b | DOI Listing |
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