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A Review on the Features and Progress of Dual-Ion Batteries

机译：双离子电池的特点和进展综述

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摘要

Despite the wide application of lithium-ion batteries in portable electronic devices and electric vehicles, the demand for new battery systems with the merits of high voltage, environmental friendliness, safety, and cost efficiency is still quite urgent. This perspective focuses on dual-ion batteries (DIBs), in which, both the cations and anions are involved in the battery reaction. An anion's intercalation/deintercalation process on the cathode side allows the DIBs to operate at high voltages, which is favorable for enhanced energy density. However, electrolytes with a wide electrochemical window and suitable anion-intercalation materials with highly reversible capacities should be developed. The progress of research into stable organic electrolytes, ionic liquids, and their effects on the electrochemical performances of DIBs are first discussed. Thereafter, the anion-host materials including graphitic materials, organic materials, and their working mechanisms are discussed in detail. In addition, recently emerging DIB systems with high-capacity anodes, or sodium-, potassium-ion involved battery reactions are also reviewed. The authors' recent work, demonstrating a generalized DIB construction using metal foil as both current collector and alloying anode material, which is successfully extended into lithium-, sodium-, and potassium-based DIBs, is also discussed.
机译：尽管锂离子电池在便携式电子设备和电动汽车中得到了广泛的应用，但是对具有高电压，环境友好，安全和成本效率的优点的新型电池系统的需求仍然非常迫切。这种观点集中于双离子电池（DIB），其中阳离子和阴离子都参与电池反应。阴极侧的阴离子嵌入/脱嵌过程使DIB可以在高电压下运行，这有利于提高能量密度。然而，应开发具有宽电化学窗口的电解质和具有高可逆容量的合适的阴离子嵌入材料。首先讨论了稳定的有机电解质，离子液体及其对DIB电化学性能的影响的研究进展。此后，详细讨论了包括石墨材料，有机材料在内的阴离子主体材料及其工作机理。此外，还对最近出现的具有高容量阳极或与钠，钾离子有关的电池反应的DIB系统进行了综述。作者的最新工作还展示了使用金属箔作为集电器和合金阳极材料的通用DIB结构，该结构已成功扩展到锂，钠和钾基DIB。

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