2020同步年報

T he following research highlights published by the NSRRC user communities during year 2020 are selected for Energy Science. These highlights outline synchrotron X-ray techniques that are suitable for addressing research questions in this domain, as well as future directions for the field. For example, the science highlights from NSRRC beamlines TLS 16A1 and TLS 20A1 show how the X-ray ab- sorption technique can reveal the reaction mechanisms for Li + transport for applications of a lithium-ion battery. The selection from TPS 44A demonstrates how operando X-ray absorption spectra can illuminate the defect mechanism and investigate the dynamic behavior of defect sites during an electrocatalytic reaction. The highlight from TLS 01C1 shows that simultaneously introducing single-atomic Ru into Mo 2 CT X MXene nanosheets plays a significant role as active sites for catalytic intermediate adsorption and elec- tron back-donation centers, which can effectively promote N 2 activation and decrease the thermodynamic energy barrier of the first hydrogenation step, thereby facilitating further hydrogenation of absorbed N 2 . The last highlight from TLS 01C1 , TLS 01C2 and TLS 24A1 reveals that a sub-nanometer heterogeneous interface induces a lattice strain and an electronegativity gradient in neighboring local domains, thus enabling a high selectivity and activity for CO 2 reduction in nanocatalysts. (by Yan-Gu Lin) Energy Science