This Brief describes recent progress in the field of metal-ion based hybrid electrical energy storage devices, with emphasis on the effect of different metal ions and other constituent components on the overall electrochemical performance of battery-supercapacitor. . This Brief describes recent progress in the field of metal-ion based hybrid electrical energy storage devices, with emphasis on the effect of different metal ions and other constituent components on the overall electrochemical performance of battery-supercapacitor. . This Brief describes recent progress in the field of metal-ion based hybrid electrical energy storage devices, with emphasis on the effect of different metal ions and other constituent components on the overall electrochemical performance of battery-supercapacitor hybrids (BSHs). Although. . Lithium-ion batteries have been widely applied in the fields of energy storage, but the thermal runaway risks and high lithium prices are restricting their further applications. Rechargeable batteries based on non-lithium metal ions (Na +, Ca 2+, Zn 2+, etc.) have attracted extensive attention to.
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