A highly conductive gel electrolyte with favorable ion transfer channels for long-lived zinc-iodine batteries.

ABSTRACT: Aqueous rechargeable zinc-iodine batteries (ARZIBs), as a powerful energy alternative, have inherent advantages, such as low cost, good safety and environmental friendliness. Unfortunately, uneven Zn deposition with dendrite growth and undesirable side reactions seriously compromises the safety and stability of ARZIBs. Herein, a novel strategy is demonstrated to fabricate highly conductive iota-carrageenan (IC) gel electrolyte. The unique double helix structure with good mechanical properties provides favorable Zn²⁺ channels guided by sulfate groups, which enables confinement effect and orderly guidance of Zn deposition. Additionally, the activity of water molecules confined in the gel electrolyte is reduced, thus inhibiting the corrosion reactions of the zinc electrode. As a re

SUBMITTER: Tian Y 

PROVIDER: S-EPMC9811518 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature