Junyuan Xu has obtained his B.S. degree in Electrochemistry from Harbin Institute of Technology (HIT) in September 2008, and his PhD degree from University of Science and Technology Beijing (USTB) in January 2014 under the supervision of Prof. Xindong Wang with a thesis entitled “High performance oxygen evolution reaction catalyst in acid for Proton Exchange Membrane (PEM) water electrolysis”. During his PhD study, he has worked as a Scientific Visitor at Technical University of Denmark (DTU) for one year under the supervision of Prof. Qingfeng Li and Erik Christensen. In March 2014, he became a Post-doctorate Fellow at the Catalysis and Materials Division (CMD) of the Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), under the supervision of the late Professor Dangsheng Su, where his research focused on electrocatalytic mechanisms of carbon dioxide conversion using heteroatom doped nanocarbon electro-catalysts. In August 2016, he joined International Iberian Nanotechnology Laboratory as Research Fellow, where developed series of high-performance non-precious earth-abundant electro-catalysts for hydrogen/oxygen evolution reactions under the supervision of Prof. Lifeng Liu. In November 2020, he moved to Dalian Institute of Chemical Physics, CAS, started his independent research career and became the head of “Oxygen Electrochemistry” group. His present interest is mainly focused on the mechanism study using advanced in-situ/operando characterization, fabrication of high-efficient atomically dispersed catalysts and device application. So far, he has authored/co-authored more than 50 peer-reviewed papers in major international journals, which have been cited >2400 times, leading to an h-index of 24 (Web Google Scholar). In addition, he has delivered ca. 8 oral presentations at different international conferences. Honors and awards he got recently include: “GeTingSui” research fellowship and JSPS fellowship.