Trifunctional Single-Atomic Ru Sites Enable Efficient Overall Water Splitting and Oxygen Reduction in Acidic Media

Mechanochemical Synthesis of Pt/Nb2CTx MXene Composites for Enhanced Electrocatalytic Hydrogen Evolution

“…The following are available online at , Figure S1: Scanning electron microscopic (SEM) images of (a, b) bulk Nb 2 CT x ; (c, d) Pt/ Nb 2 CT x catalyst synthesized by ball milling, Figure S2: Transmission electron microscopic (TEM) images of Pt/ Nb 2 CT x catalyst synthesized by ball milling, Figure S3: Selective area electron diffraction (SAED) of ( a ) pristine Nb 2 CT x and ( b ) Pt/ Nb 2 CT x -600, Figure S4: The intensity profile across the lattice of pristine Nb 2 CT x and Pt/ Nb 2 CT x , Figure S5: The XRD pattern of pristine Nb 2 CT x , Figure S6: The whole spectrum survey of Pt/Nb 2 CT x and Pt/Nb 2 CT x -600 calibrated with the main peak of C 1s at 284.8 eV, Figure S7: The HER polarization curve of the pristine Nb 2 CT x substrate, Figure S8: The HER Tafel plot of the pristine Nb 2 CT x substrate, Figure S9: TEM images of Pt/ Nb 2 CT x -600 after a 5k ADT cycles long-term stability test, Figure S10: XRD patterns of Pt/ Nb 2 CT x -600 and Pt/ Nb 2 CT x -600 after a 5k ADT cycles long-term stability test, Figure S11: Pt 4f XPS spectrum of Pt/ Nb 2 CT x -600 after a 5k ADT cycles long-term stability test, Table S1: The EIS fitting results of Pt/Nb 2 CT x and Pt/Nb 2 CT x -600 catalysts, Table S2: HER activity for recently reported noble metal catalysts in 0.5 M H 2 SO 4 (* represents 0.1M H 2 SO 4 ). References [ 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 ] are cited in the supplementary materials…”