Zincke‐Derived Viologen Covalent Organic Framework as a High‐Performance Cathode for Aqueous Zinc‐Iodine Batteries
Source abstract
Abstract
Abstract Aqueous zinc–iodine (Zn–I 2 ) batteries are among the most promising energy storage technologies, offering high energy density, low cost, and intrinsic safety. However, their practical deployment is hindered by the polyiodide shuttle effect, leading to rapid capacity fading and poor cycling performance. This work demonstrates the application of a crystalline viologen‐based covalent organic framework (TAB‐DNP‐BP COF), synthesized via a one‐pot Zincke reaction, as an efficient iodine host material. The cationic backbone of the TAB‐DNP‐BP COF effectively confines iodine (I 2 ) species and electrostatically traps polyiodides, suppressing their migration and protecting the zinc anode. Zinc–iodine batteries assembled with an I 2 ‐enriched TAB‐DNP‐BP COF (TAB‐DNP‐BP COF@I 2 ) cathode deliver a high specific capacity of 337 mAh g −1 at 0.5 C, surpassing the performance of most reported COF‐, MOF‐, and cage‐based systems, while exhibiting excellent cycling stability over 5000 cycles. This work highlights the potential of ionic COFs for stabilizing iodine chemistry and offers a promising strategy toward the development of high‐performance, durable aqueous Zn–I 2 batteries.
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Research context
OpenAlex topics: Advanced battery technologies research · Covalent Organic Framework Applications · Advanced oxidation water treatment
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chemistry Program New York University Abu Dhabi (NYUAD) Saadiyat Island Abu Dhabi PO Box 129188 United Arab Emirates
Physical and Materials Chemistry Division CSIR‐National Chemical Laboratory Pune Maharashtra 411008 India
Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
Core Technology Platform New York University Abu Dhabi (NYUAD) Abu Dhabi 129188 United Arab Emirates
Technology Innovative Institute Abu Dhabi 9639 United Arab Emirates
Instituto de Ciencia de Materiales de Madrid‐CSIC C. Sor Juana Inés de la Cruz 3 Madrid 28049 Spain
Department of Physical and Environmental Sciences Texas A&M University Corpus Christi 6300 Ocean Dr. Corpus Christi TX 78412 United States
Department of Chemistry Faculty of Arts and Sciences University of Balamand Tripoli PO Box 100 Lebanon
NYUAD Water Research Center New York University Abu Dhabi (NYUAD) Saadiyat Island Abu Dhabi PO Box 129188 United Arab Emirates
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