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. 2020 Jun 5;7(14):2000587. doi: 10.1002/advs.202000587

Figure 1.

Figure 1

Fabrication of SPI‐PAAm hydrogel. a) Schematic of preparation of the SPI‐PAAm hydrogel with ammonium persulfate (APS, initiator), N,N′‐methylenebisacrylamide (MBAA, crosslinker) and lithium chloride (LiCl, charge carrier), as well as the construction of hydrogel electrolyte‐based supercapacitors with two PPy‐coated CNTs electrodes directly paving on each side of the electrolyte. b) Energy dispersive X‐ray spectroscopic mapping images show the elemental distribution of C, O, and N on the cross section of freeze‐dried hydrogel.