Miniaturized rechargeable batteries with high specific power are required for substitution of the large sized primary batteries currently prevalent in integrated systems since important implications in dimensions and power are expected in future miniaturized applications. Commercially available secondary microbatteries are based on lithium metal which suffers from several well-known safety and manufacturing issues and low specific power when compared to (super) capacitors. A high specific power and novel dual-metal-ion microbattery based on LiMn₂O₄, zinc, and an aqueous electrolyte is presented in this work. Specific power densities similar to the ones exhibited by typical electrochemical supercapacitors (3400 W kg^–1) while maintaining specific energies in the range of typical Li-ion batteries are measured (∼100 Wh kg^–1). Excellent stability with very limited degradation (99.94% capacity retention per cycle) after 300 cycles is also presented. All of these features, together with the intrinsically safe nature of the technology, allow anticipation of this alternative micro power source to have high impact, particularly in the high demand field of newly miniaturized applications.

中文翻译：

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基于LiMn ₂ O ₄和锌的高比功率双金属离子可充电微型电池，用于小型化应用

需要高比功率的微型可再充电电池来替代当前集成系统中普遍使用的大尺寸一次电池，因为在未来的微型化应用中，尺寸和功率的重要影响是可望而不可及的。市售的二次微电池是基于锂金属的，与（超级）电容器相比，锂金属存在一些众所周知的安全性和制造问题，并且比功率较低。在这项工作中提出了一种基于LiMn ₂ O ₄，锌和水性电解质的高比功率和新型双金属离子微电池。比功率密度与典型的电化学超级电容器所显示的功率密度相似（3400 W kg ^–1），同时保持典型锂离子电池范围内的比能量（〜100 Wh kg ^–1）。还介绍了出色的稳定性，在300次循环后具有极有限的降解（每个循环99.94％的容量保持率）。所有这些功能以及该技术的本质安全特性，使人们期望这种替代的微型电源产生巨大的影响，特别是在新小型化应用的高需求领域。