(Invited) Tailoring the Surface Chemistry and Assembling Structure of 2D Materials for Supercapacitors and Batteries

Energy storage devices are important components in portable electronics, electric vehicles, and the electrical distribution grid. Batteries and supercapacitors have achieved great success as the spearhead of electrochemical energy storage devices, but need to be further developed in order to meet the ever-increasing energy demands, especially attaining higher power and energy density, and longer cycling life. Rational design of electrode materials plays a critical role in developing energy storage systems with higher performance. Starting from the classical 2D material - graphene to the other new 2D materials for example MXene, I will introduce some of our recent works about how to design and tune the surface chemistry of 2D materials and how to tailor the structure of 2D materials. Specifically, the interlayer structure and the self-assembled unique structure will be discussed, and the use of various advanced characterization techniques (in situ/operando) to understand the materials and their energy storage mechanisms will be covered in my talk as well. Most importantly, I will also introduce how can we strategically use 2D materials in different applications from battery, supercapacitors to sensors.