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Updated: Sep 19, 2026

Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Chirality-Engineered Supramolecular Gel Networks: Manipulating Interfacial Chemistry for Ultrastable Zinc Metal
Yiwen Zhang1, Qiang Hu2, Dajiang Tang1
1School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, P. R. China.
Abstract:
While gel polymer electrolytes buffer interfacial stress in aqueous zinc metal batteries (AZMBs), traditional designs rely on isotropic chemical affinities, lacking the spatial precision to actively regulate complex interfacial electrochemistry. To transcend passive physical scaffolds, we embed pure R-configured enantiomers into an achiral polymer host, translating molecular chirality into configuration-dependent supramolecular assembly. Unlike S-enantiomeric and racemic counterparts, the R-enantiomer develops more favorable configuration-dependent associations with the polymer backbone via multiplexed non-covalent interactions, yielding a more integrated and mechanically reinforced supramolecular network. This configuration-dependent network organization facilitates Zn2+ transport by establishing more continuous ion-conduction pathways, successfully circumventing the racemic self-quenching effect and mitigating the steric penalties of the S-enantiomer. Thermodynamically, the network strictly confines highly reactive free water to eradicate parasitic reactions and block cathode dissolution. Kinetically, it reshapes the Zn2+ solvation sheath and constructs sub-nanoscale channels guiding homogeneous zinc deposition. Consequently, the optimized R-gel symmetric cells achieve a prolonged lifespan of 5800 h. Assembled Zn||VO2 full cells deliver an outstanding 91.2% capacity retention after 8000 cycles at 1 A g-1, alongside robust durability (81.0% retention after 3000 cycles) at 5 A g-1. This work elevates stereochemical configuration into an active structural parameter, establishing a molecularly precise design paradigm for durable AZMBs.

