journal article·2026-09

Solvation engineering in biphasic electrolytes for safe and high-energy zinc-iodine batteries

Hualong Zhu, Yilang Liu, Dahe Zhang, Chao Yang, Limin Zang, Qingyun Dou

Materials Letters· Volume 419
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Abstract

Aqueous zinc-iodine batteries are promising candidates for grid-scale energy storage, yet their practical application is hindered by the shuttle effect of polyiodides. Herein, we design an aqueous-organic biphasic zinc-iodine battery that mitigates this issue via spatially confining polyiodides within the organic phase. The strategic use of propylene carbonate as the organic solvent establishes a liquid-sealed top aqueous phase to enhance safety, and boosts ionic transport in the bottom organic phase. The as-assembled biphasic battery exhibits a specific capacity of 10 Ah L−1 along with stable cycling performance exceeding 650 hours.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Advanced battery technologies research · Electrocatalysts for Energy Conversion · Advanced Battery Materials and Technologies

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References (6)

Show source-provided references
1. Soft–hard zwitterionic additives for aqueous halide flow batteries10.1038/s41586-024-08079-4 ↗
2. Tailoring solvation sheath and desolvation processes of weakly solvated Zn2+ through heterointerfaces built-in electric field effects for ultra-stable aqueous zinc batteries10.1016/j.apmate.2025.100282 ↗
3. Hierarchical micro-mesoporous carbon firmly confined iodine for high performance zinc-iodine batteries10.1016/j.matlet.2023.135241 ↗
4. A biphasic membraneless zinc-iodine battery with high volumetric capacity
5. Manipulating ion chemistry in biphasic electrolytes toward durable high-energy zinc–bromine batteries10.1002/adma.72591 ↗
6. Principles and Design of Biphasic Self-Stratifying Batteries Toward Next-Generation Energy Storage10.1002/anie.202320258 ↗