fig15

Figure 15. (A) Schematic diagram of the synthesis of the P/C composite. Copyright 2018, Journal of Power Sources^[157]. (B) Schematic illustration of the fabrication process of red P@AC and red P@AC@PPy composite. Copyright 2020, Nano energy^[165]. (C) DFT computations of P atoms adsorbed on nondefective or nitrogen-doped carbon surface and corresponding adsorption energy (E_ad). The brown, blue, and red balls represent C, N, and P atoms, respectively. Copyright 2019, Nano Letters^[92]. (D) The corresponding three-dimensional charge density and two-dimensional charge density maps in V₃Se₄/CNF system and V₃Se₄/NPCNF system, respectively. The three-dimensional charge density par value is set at 0.14 e/bohr³. Saturation values are marked on the two-dimensional charge density scale, and high values correspond to electron abundance. Copyright 2021, Chemical Engineering Journal^[168].