Research Interests Energy harvesting and storage (photocatalysis, electrocatalysis, biomass, CO2 and N2 reductions, fuel cell, solar cell, battery, supercapacitor, and hydrogen production/storage) Spintronics Nanodevices (ReRAM and PRAM) Magnetism Fabrication and first-principles design of materials Condensed Matter Physics In his research, a combined computational and experimental method is used to design and fabricate novel nanomaterials for applications in energy conversion and storage (such as electrocatalysis, photocatalysis, supercapacitors, hydrogen storage, and fuel cells), electronic devices, spintronics, and quantum devices. He has published more than 200 papers in international peer-reviewed journals, such as Phys. Rev. Lett., Phys. Rev. B, Adv. Energy Mater., Chem. Mater., ACS Nano, and J. Phys. Chem. B&C. The total citation is more than 9700 (google scholar) / 8100 (SCI). Additionally, he is the author of 5 book chapters and the inventor of 4 USA and 6 China patents. His present h-index is 48 (google scholar) / 46 (SCI). (updated in Aug. 2021).