Harnessing Covalent Chemistry on Two-dimensional Black Phosphorus Nanosheets

Two-dimensional (2D) black phosphorous nanosheets (BPNSs) are a rising star among the family of 2D materials due to the outstanding physicochemical properties .

BPNSs have shown potential utilizations in microelectronics, energy conversion and storage devices, and biological applications. However, the poor ambient stability of BPNSs limits their practical applications. Chemical functionalization has proven to be an effective way to passivate BPNSs with improved ambient stability.

In the proposed project, I will go beyond the state of the art by exploring innovative chemical approaches on covalent functionalization of 2D BPNSs with functional units (organic small molecules, conducting polymers, or other 2D materials) using robust boron chemistry, through a delicate control of the interfacial chemistry.

The as-prepared new BPNSs-based nanostructures will be applied as active electrode materials towards high performance energy storage devices in supercapacitors.

The prototype supercapacitor devices are targeting a capacitance exceeding 50 F cm –3 at a high current density, having high energy density and power density , along with good stability over 10000 cycles.To achieve the goals, the project is planned with four different tasks during the four years at Chalmers.

Within the project, precisely tuning and controlling the surface chemistry of BPNSs, understanding the structure-property-function relationship on the functionalized BPNSs nanostructures, will be fully explored.