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. 2021 Dec 7;13(24):4284. doi: 10.3390/polym13244284

Figure 1.

Figure 1

Schematic diagram of Zn-ion and Mg-ion battery discharge. Reproduced with permission from Renew. Sustain. Energy Rev., 65, Singh et al., Perspectives for solid biopolymer electrolytes in dye sensitized solar cell and battery application, 1098–1117, 2016 [50].