Unlocking Durable and Sustainable Zinc–Iodine Batteries via Molecularly Engineered Polyiodide Reservoirs
imcn | Louvain-la-Neuve
Zinc-iodine batteries (ZIBs) are promising candidates for safe and sustainable energy storage but are hindered by polyiodide shuttling, leading to rapid capacity decay and limited cyclability.
Together with researchers from KULeuven and MPIP in Germany, researcher from BSMA Jean-François Gohy has participated to a work led by Shanghai Jiao Tong University in which a “polyiodide reservoirs” concept has been proposed, utilizing iodophilic covalent organic cages to chemically confine polyiodide through host-guest interactions.
By precisely engineering the nitrogen-active site densities around three-dimensional superphane-based cavities, these cages evolve from open to near-enclosed structure, achieving molecular-level polyiodide entrapment. This work has recently been published in Angewandte Chemie as Very Important Paper and establishes covalent organic superphanes as a platform for long-life ZIBs.
Authors: Leiqian Zhang, Ke Luo, Jiaming Gong, Yazhou Zhou, Hele Guo, Yi Yu, Guanjie He, Jean-François Gohy, Ivan P Parkin, Johan Hofkens, Qing He, Tianxi Liu, Klaus Müllen, Feili Lai