Flexible and transparent electronics have light market prospect in future. Flexible and transparent devices, such as LED, displayers, have appeared in recent years. Flexible and transparent power sources are important component electronics. But few researches in the area are reported. The main stream energy devices include solar cells, supercapacitors, lithium ion batteries, alkaline batteries and et al. , which are mostly based on electrochemistry systems. Conventionally, sandwich structure is applied to these devices, which are sandwiched by anode, cathode and electrolyte. However, energy devices like this are hardly flexible or transparent. It is necessary to design a new structure to fabricate flexible and transparent devices.

Recently, Prof. Qing Zhao, Prof. Dapeng Yu and Heng Li have designed a new device structure, which can be applied to electrochemical systems for flexible and transparent energy devices. Anode and cathode are fabricated as comb-teeth shape, and integrated on the same plane, based on flexible and transparent plastic substrate. Theoretically, the new structure can make electrochemical devices flexible and semitransparent. As examples, the comb-teeth structure is applied to dye-sensitized solar cells and supercapacitors. After a series of tests, they perform more transparent and flexible than conventional devices.

The new structure can also be applied to more energy devices, like lithium ion batteries, alkaline batteries, with great application prospect.