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. 2021 Nov 29;11(12):3246. doi: 10.3390/nano11123246

Figure 5.

Figure 5

(a) TEM image of 2D porous carbon nanosheets; (b) HRTEM image of 2D porous carbon nanosheets; (c) Specific capacitances of 2D porous carbon nanosheets at different current densities. Reprinted with permission from Ref. [57]. Copyright Wiley-VCH, 2015. (d) Schematic diagram of the mechanism for ion exchange reactions; (e) Rate performance of amorphous Ni–Co hydroxide nanosheets. Reprinted with permission from Ref. [58]. Copyright Royal Society of Chemistry, 2018. (f) FESEM image and schematic illustration of the microstructure of NiCoMn–OH on Ni foams. Reprinted with permission from Ref. [60]. Copyright Elsevier, 2019. (g) HRTEM of the Co0.2Ni0.8 pyrophosphate nanosheets. (h) The cycling performance at the current density of 1.5 A g−1 for the Co0.2Ni0.8 pyrophosphate and Co0.2Ni0.8NH4PO4·H2O precursor. Reprinted with permission from Ref. [61]. Copyright Elsevier, 2019.