fig8

Figure 8. (A) Stable structure models of Pt₁₃ clusters on (i) TiN, (ii) TiC, and (iii) graphene. Reproduced with the permission of Ref.^[134] Copyright 2019, Elsevier. (B) Schematic of Pt/e-TAC catalyst formation. Reproduced with the permission of Ref.^[138]. Copyright 2014, Royal Society of Chemistry. (C) Binding energies of Pt atoms on the ordered Mo₂C surface and the formation of Pt nanorafts on the Mo₂C surface (i) to (iv) Pt deposited growing in a channel, (v) to (viii) Pt atoms deposited outside the channel with an increase in Pt-loading. Purple, blue, and yellow spheres represent C, Mo, and Pt atoms, respectively. Reproduced with the permission of Ref.^[144] Copyright 2018, American Chemical Society. (D) Free energy diagrams of ORR on Pt@Mo₂C(100)_O* and Pt(111). Reproduced with the permission of Ref.^[148]. Copyright 2021, American Chemical Society. (E) Schematic diagram, phase characterization, and performance. (i) Schematic illustrations of the synthesis of various Pt/Mo₂C samples, (ii) XRD patterns of various Pt/Mo₂C samples, (iii) Fitted EXAFS results of Pt_quasi/Mo₂C, without and with Pt-Pt coordination, (iv) Structural models of the cases for quasi-paired Pt single atoms and completely paired Pt atoms, (v) Stability of Pt_quasi/Mo₂C determined by chronoamperometry test conducted at a potential of 0.85 V. Reproduced with the permission of Ref.^[149] Copyright 2021, John Wiley and Sons.