过渡金属元素硫化物磷化物电.pptx

;目录;;Fig.1 Relationship between the M-H Adsorption Bonding Strength and the Exchange Current Densities in HER ;;Volmer-Tafel mechanism;;;;;Fig.4 SEM and EDX elemental mapping images of Mo–W–O/CC (a–c); SEM, HRTEM, TEM and EDX elemental mapping images of Mo–W–P/CC (d–h);and XRD patterns of Mo–W–P/CC (i), the positions of the peaks belonging to the phases used in the Rietveld fit of the spectrum are indicated with vertical markers.;Fig.5 (a) Polarization data for Mo–W–P/CC (iR corrected) in 0.50 M H2SO4 electrolyte at 2 mV s-1, along with plots of MoP/CC, WP2/CC and Pt/C/CC for comparison; (b) the corresponding Tafel plots of samples in (a); (c) stability of Mo–W–P/CC in H2SO4 solution (0.5 M) at a scan rate of 100 mV s-1 before and after 4000 cycles between -0.2 and +0.2 V (RHE); and (d) time dependence of catalytic current density during electrolysis for Mo–W–P/CC at -100 mV (RHE).;亮点：用冶金法和电化学刻蚀两种方法合成了多孔、组分可控制的双金属磷化物。;Figure.6 (a) Schemical description of the fabrication process of free-standing nanoporous (Co1-xFex)2P. (b) The optical photograph of a mother alloy ingot; (c) meltspun ribbon precursors; and (d) an as-prepared nanoporous (Co1-xFex)2P ribbon. Scalebar.;Fig. 7 Microstructure characterization of three-dimensional nanoporous bimetallic phosphides. (a) SEM images of np-(Co0.52Fe0.48)2P. Inset shows the microstructure of cross-section of np-(Co0.52Fe0.48)2P. (b) X-ray diffraction pattern of the np-(Co1xFex)2P with various Co/Fe ratios. (c) XRD results at the (112) peak in the marked region of (b). The peak intensities of different samples were normalized to unity for comparison .Scale bars: (a) 500 nm, inset: 5 mm.;DOI: 10.1021/acsami.6b07785;Figure.9 (A) XPS spectra in the Co 2p regions and (B) P2p regions of Co/CoP-NF catalyst; (C) HRTEM images of Co/CoP-NF; (D) XRD pattern of Co/CoP-NF.;亮点：用水热法合成了S、N、Co掺杂的石墨烯上负载硫化镍钴气凝胶的催化剂，有效的提高了金属硫化物的循环性能。;Figure.10 a) Schematic diagram of the synthesis of Ni-Co-S/SNGA; b) digital camera photo of the typical