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A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value-Added and Ultra-Stable Zinc-Iodine Batteries

Zhang, L; Zhang, M; Guo, H; Tian, Z; Ge, L; He, G; Huang, J; ... Lai, F; + view all (2022) A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value-Added and Ultra-Stable Zinc-Iodine Batteries. Advanced Science , Article e2105598. 10.1002/advs.202105598. (In press). Green open access

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Abstract

The development of aqueous rechargeable zinc-iodine (Zn-I2) batteries is still plagued by the polyiodide shuttle issue, which frequently causes batteries to have inadequate cycle lifetimes. In this study, quaternization engineering based on the concept of “electric double layer” is developed on a commercial acrylic fiber skeleton ($1.55–1.7 kg−1) to precisely constrain the polyiodide and enhance the cycling durability of Zn-I2 batteries. Consequently, a high-rate (1 C–146.1 mAh g−1, 10 C–133.8 mAh g−1) as well as, ultra-stable (2000 cycles at 20 C with 97.24% capacity retention) polymer-based Zn-I2 battery is reported. These traits are derived from the strong electrostatic interaction generated by quaternization engineering, which significantly eliminates the polyiodide shuttle issue and simultaneously realizes peculiar solution-based iodine chemistry (I−/I3−) in Zn-I2 batteries. The quaternization strategy also presents high practicability, reliability, and extensibility in various complicated environments. In particular, cutting-edge Zn-I2 batteries based on the concept of derivative material (commercially available quaternized resin) demonstrate ≈100% capacity retention over 17 000 cycles at 20 C. This work provides a general and fresh insight into the design and development of large-scale, low-cost, and high-performance zinc-iodine batteries, as well as, other novel iodine storage systems.

Type: Article
Title: A Universal Polyiodide Regulation Using Quaternization Engineering toward High Value-Added and Ultra-Stable Zinc-Iodine Batteries
Location: Germany
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/advs.202105598
Publisher version: https://doi.org/10.1002/advs.202105598
Language: English
Additional information: © 2022 The Authors. Advanced Science published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Keywords: electrostatic interaction, mechanism, quaternization, solution-based iodine chemistry, zinc-iodine battery
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL
URI: https://discovery.ucl.ac.uk/id/eprint/10145137
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