3D printable ink for double-electrical-layer-enhanced electrode of microsupercapaitors

The key of the development of interdigital microsupercapacitors (MSCs) is to increase their areal energy density. 3D printing technology can build the pseudocapacitive electrodes companying with increasing the load capacity of pseudocapacitive materials in electrodes, resulting in the great increase of the areal energy density of MSCs. However, its major challenge is to design high electrical conductive pseudocapacitive materials and the related 3D printable inks. Here, a double-electrical-layer-enhanced structure of pseudocapacitive materials for electrodes is designed and its 3D printable ink is proposed and prepared in a simple method. The ink is used directly to 3D print the MSCs electrodes with double-electrical-layer-enhanced structure of pseudocapacitive materials simultaneously. The structure enhanced electrical conductivity of pseudocapacitive electrodes and their high load capacity boom the electrochemical performance of MSCs, especially the areal energy density. The method developed here is a good reference for research communities in this field.

Automated summary

The development of interdigital microsupercapacitors focuses on increasing their areal energy density, which can be achieved by using 3D printing technology to build pseudocapacitive electrodes with high load capacity pseudocapacitive materials. A double-electrical-layer-enhanced structure of pseudocapacitive materials for electrodes has been designed, along with a 3D printable ink. This method improves the electrical conductivity and load capacity of the electrodes, leading to enhanced electrochemical performance of MSCs.