| 초록 |
Here, we present straightforward strategy to stabilize Zn anodes via building a hydrogel protective layer interphase derived from a biopolymer. Agarose, one of the natural linear polysaccharides, forms a thin hydrogel protective layer (~10 µm) on the surface of the Zn anodes via an environmentally friendly cross-linking process, which suppresses parasitic side reactions and notorious dendrite formation. Furthermore, the hydrophilic polar functional groups in the protective layer allow excellent electrolyte retention. As a result, the aqueous ZIBs with the hydrogel protective layer coated Zn anodes deliver a high capacity (111 mAh g-1) and maintain excellent retention of 93% at 2 Ah g-1 after 3000 cycles. Our findings open up a novel avenue in utilizing biomaterials in aqueous ZIBs, which would facilitate the development of highly efficient energy storage systems by employing sustainable materials. |
