Jiang Kang, Zhou Zeyan, Wen Xi, Weng Qunhong
College of Materials Science and Engineering, Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy, Hunan University, Changsha, 410082, P. R. China.
Small. 2021 Mar;17(12):e2007389. doi: 10.1002/smll.202007389. Epub 2021 Mar 3.
Miniaturized energy storage devices (MESDs) provide future solutions for powering dispersive electronics and small devices. Among them, aqueous zinc ion microbatteries (ZIMBs) are a type of promising MESDs because of their high-capacity Zn anode, safe and green aqueous electrolytes, and good battery performances. Herein, for the first time, a simple and powerful strategy to fabricate flexible ZIMBs based on tailored soft templates is reported, which are patterned by engraving and enables to design the ZIMBs featured with arbitrary shapes and on various substrates. The assembled ZIMBs employing α-MnS as the cathode materials and guar gum gel as the quasi-solid-state electrolyte exhibited very high areal specific capacity of up to 178 μAh cm , a notable areal energy density of 322 μWh cm and power density of 710 μW cm . Footprint areas of the manufactured ZIMBs as small as 40 mm can be achieved. The proposed method based on the engraved soft templates provides a practical route for ZIMB and other MESD designs, which is critical for portable and wearable electronics development.
微型储能设备（MESDs）为分散式电子设备和小型设备供电提供了未来的解决方案。其中，水系锌离子微型电池（ZIMBs）是一类很有前景的MESDs，因为它们具有高容量的锌负极、安全绿色的水系电解质以及良好的电池性能。在此，首次报道了一种基于定制软模板制造柔性ZIMBs的简单而有效的策略，该模板通过雕刻进行图案化，能够设计出具有任意形状且可在各种基板上的ZIMBs。采用α-MnS作为正极材料和瓜尔胶凝胶作为准固态电解质组装的ZIMBs表现出高达178 μAh cm 的非常高的面积比容量、322 μWh cm 的显著面积能量密度和710 μW cm 的功率密度。所制造的ZIMBs的占地面积可小至40 mm 。基于雕刻软模板提出的方法为ZIMB和其他MESD设计提供了一条实用途径，这对便携式和可穿戴电子产品的发展至关重要。
