Humans live today in a high‐tech and informationalized society. With the development of the emerging electronic information age, various electronic systems are inclined to be multifunctional and miniaturized. It is urgent to develop “small and powerful” micro‐batteries with flexibility and high electrochemical performance to meet the diverse needs of microelectronic components. However, low electrochemical performance exists in traditional microenergy storage devices, which fail to satisfy the energy needs for microdevices. Here, for the first time, a planar integrated flexible rechargeable dual‐ion microbattery (DIMB) is reported, which is fabricated from an interdigital pattern of graphite as an electrode and lithium hexafluorophosphate as an electrolyte. As a microbattery, the DIMB exhibits a high reversible capacity of 56.50 mAh cm⁻³, and excellent cycle stability with 90% capacity retention after 300 cycles under a high working voltage. The application of DIMB in microdevices, such as light‐emitting diodes (LEDs), digital electronic game consoles, and electrochromic glasses is also investigated, fully demonstrating its “small and powerful” performance. The integrated DIMB is a high‐voltage microdevice that reaches a nonpareil discharge voltage of about 100 V and a charging capacity of 102 mAh g⁻¹. This dual ion‐based flexible microbattery could become a promising candidate for energy storage and conversion components in next‐generation microelectronic devices and integrated electronic devices.

中文翻译：

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首款柔性双离子微型电池展现出超强的容量和超高的能量密度：小巧而强大

今天，人类生活在高科技和信息化的社会中。随着新兴的电子信息时代的发展，各种电子系统倾向于多功能化和小型化。迫切需要开发出具有灵活性和高电化学性能的“小而强大”的微型电池，以满足微电子元件的各种需求。然而，传统的微能量存储设备中存在较低的电化学性能，无法满足微设备的能量需求。在这里，首次报道了一种平面集成的柔性可充电双离子微电池（DIMB），该电池由石墨作为电极和六氟磷酸锂作为电解质的叉指图形制作而成。作为微型电池，DIMB具有56.50 mAh cm的高可逆容量⁻³，优异的循环稳定性，在高工作电压下300次循环后仍具有90％的容量保持率。还研究了DIMB在微型设备中的应用，例如发光二极管（LED），数字电子游戏机和电致变色玻璃，充分证明了其“小而强大”的性能。集成的DIMB是一种高压微设备，可达到约100 V的最高放电电压和102 mAh g ^-1的充电容量。这种基于双离子的柔性微电池可以成为下一代微电子设备和集成电子设备中能量存储和转换组件的有前途的候选者。