The development of a new generation of miniaturized and wearable electronic products has greatly stimulated people's urgent demand for matching new concepts, high safety, and long-life micro energy storage devices, especially planar micro batteries. Planar micro-batteries are highly integrated and overcome the shortcomings of traditional sandwich-configuration batteries such as large size, poor mechanical flexibility, and easy interface separation under bending. They are a new type of wearable electronic device power source with great development prospects. .

　　The team developed a low-cost, simple, efficient, and large-scale screen printing technology, and successfully prepared a new concept of water-based planarized zinc-manganese micro-battery with good mechanical flexibility, high safety, and long life. They first used manganese dioxide, zinc powder, and graphene as functional materials to configure the positive and negative electrodes of zinc-manganese batteries and graphene current collector thixotropic inks, and then used a multi-step screen printing method to achieve planarized zinc-manganese. Low-cost, large-scale preparation of microbatteries.

　　The new zinc-manganese battery is not only environmentally friendly and highly safe, but also exhibits an ultra-long working life. In addition, the diversity of printing substrates can also meet the needs of different application scenarios.

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