Co2P encapsulated in N, O co-doped carbons as bifunctional electrocatalysts for oxygen evolution and reduction reactions

A Green Synthesis Strategy for Cobalt Phosphide Deposited on N, P Co-Doped Graphene for Efficient Hydrogen Evolution

“…It should be noted that the P 2p 3/2 shows a negative shift of 0.6 eV compared with the elemental P (130.1 eV) [ 26 ]. While, compared with the energy level of the zero valent state of the metal cobalt (778 eV) [ 23 ], the binding energy of Co 2p 1/2 in the composite shows a slightly positive shift of 0.3 eV, indicating the transfer of electrons from cobalt to P. All of the above characterizations imply the successful fabrication of Co 2 P/NPG.…”

“…As displayed in Figure 4 a, the peaks can be divided into four peaks at 284.7, 286, 287.1, and 289.3 eV, contributing to the C-C, C-P, C-N, and C-O, respectively. The high-resolution spectrum of N 1s ( Figure 4 b) can be deconvoluted into two peaks, which can be ascribed to pyridinic N (398.2 eV) and graphitic N (400.6 eV), indicating the successful doping of N to the graphene sheet [ 23 ]. Figure 4 c is the high-resolution spectrum of Co 2p, in which two peaks at 778.3 and 793.4 eV can be ascribed to Co 2p 1/2 and 2p 3/2 in Co 2 P [ 24 ].…”

The Effect of N‐Defect and Axial Halogen Atom on Electrocatalytic Oxygen Reduction Reaction Activity of FeN4 Single‐Atom Catalysts: A Density Functional Theory Study

“…The rapid development of human society has led to the consumption of non-renewable energy, resulting in various problems including energy security and environmental pollution. [1][2][3][4][5][6] There was a growing demand for renewable green energy, for example, water splitting, metal-air cells and rechargeable fuel cells. [7,8] Fuel cells and metal-air cells had garnered significant attention due to their high-power density, high energy conversion efficiency, and low pollution levels.…”

“…The rapid development of human society has led to the consumption of non‐renewable energy, resulting in various problems including energy security and environmental pollution [1–6] . There was a growing demand for renewable green energy, for example, water splitting, metal‐air cells and rechargeable fuel cells [7,8] .…”