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. 2021 Dec 10;9(1):2104183. doi: 10.1002/advs.202104183

Figure 8.

Figure 8

a) Schematic illustration of the formation process of NiCoS/C nanocage. b) Free energy diagram of N2 reduction on NiCoS/C and NiCoS. Reproduced with permission.[ 161 ] Copyright 2020, Royal Society of Chemistry. c) Schematic diagram for the synthetic procedure of CoVP@NiFeV–LDHs. d) FEs for NiFeV–LDHs, CoVP, and CoVP@NiFeV–LDHs. Reproduced with permission.[ 162 ] Copyright 2020, Elsevier. e) Schematic illustration of the design concept of work function of M@NCNTs. E vac and E F represent vacuum level and Fermi level, respectively. f) The corresponding energy level diagram. Reproduced with permission.[ 163 ] Copyright 2020, Royal Society of Chemistry.