Water-in-Polymer Salt Electrolyte for Long-Life Rechargeable Aqueous Zinc-Lignin Battery
Artikel i vetenskaplig tidskrift, 2024

Zinc metal batteries (ZnBs) are poised as the next-generation energy storage solution, complementing lithium-ion batteries, thanks to their cost-effectiveness and safety advantages. These benefits originate from the abundance of zinc and its compatibility with non-flammable aqueous electrolytes. However, the inherent instability of zinc in aqueous environments, manifested through hydrogen evolution reactions (HER) and dendritic growth, has hindered commercialization due to poor cycling stability. Enter potassium polyacrylate (PAAK)-based water-in-polymer salt electrolyte (WiPSE), a novel variant of water-in-salt electrolytes (WiSE), designed to mitigate side reactions associated with water redox processes, thereby enhancing the cyclic stability of ZnBs. In this study, WiPSE was employed in ZnBs featuring lignin and carbon composites as cathode materials. Our research highlights the crucial function of acrylate groups from WiPSE in stabilizing the ionic flux on the surface of the Zn electrode. This stabilization promotes the parallel deposition of Zn along the (002) plane, resulting in a significant reduction in dendritic growth. Notably, our sustainable Zn-lignin battery showcases remarkable cyclic stability, retaining 80% of its initial capacity after 8000 cycles at a high current rate (1 A g−1) and maintaining over 75% capacity retention up to 2000 cycles at a low current rate (0.2 A g−1). This study showcases the practical application of WiPSE for the development of low-cost, dendrite-free, and scalable ZnBs.


Zn-ion battery


water-in-salt electrolyte



Divyaratan Kumar

Linköpings universitet

Leandro R. Franco

Karlstads universitet

Nicole Abdou

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Rui Shu

Linköpings universitet

Anna Martinelli

Chalmers, Kemi och kemiteknik, Tillämpad kemi

C. Moyses Araujo

Uppsala universitet

Karlstads universitet

Johannes Gladisch

Linköpings universitet

Viktor Gueskine

Linköpings universitet

Reverant Crispin

Linköpings universitet

Ziyauddin Khan

Linköpings universitet

Energy and Environmental Materials

25750348 (ISSN) 25750356 (eISSN)

Vol. In Press


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Annan kemiteknik

Annan kemi



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