Mass Transport in “Water-in-Polymer Salt” Electrolytes

Khan, Ziyauddin; Martinelli, Anna; Franco, Leandro R.; Kumar, Divyaratan; Idström, Alexander; Evenäs, Lars; Araujo, C. Moyses; Crispin, Xavier

doi:10.1021/acs.chemmater.3c01089

Cited by 4 publications

(3 citation statements)

References 57 publications

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“…The frequency range was 10 5 -10 Hz. 109,110 In some cases, temperature dependent ionic conductivities were evaluated at different temperatures from -60 to +40 °C varied using an electrical heater and liquid nitrogen within a cryostat, with an error deviation of ±2 °C. 110 The final value of the resistance (R) used for the calculation of the ionic conductivity was considered from the linear fitted data.…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

“…109,110 In some cases, temperature dependent ionic conductivities were evaluated at different temperatures from -60 to +40 °C varied using an electrical heater and liquid nitrogen within a cryostat, with an error deviation of ±2 °C. 110 The final value of the resistance (R) used for the calculation of the ionic conductivity was considered from the linear fitted data. Ionic conductivity was calculated with the following relation σ = d / (R x A), where d, A and R are the distance between the electrodes, area of cross section and resistance, respectively.…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

“…It was established that K + ions move within the water phase instead of adhering to the local dynamics of polyanions. 110 Later, hybrid electrolytes were prepared by adding a small quantity of 0.1 m and 0.2m of various metal TFSI salts.…”

Section: Conclusion and Future Prospects Conclusionmentioning

confidence: 99%

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Water-in-polymer Salt Electrolyte (WIPSE) for Sustainable Lignin Batteries

Kumar

2023

Linköping Studies in Science and Technology. Dissertations

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Description of the cover imageThe illustration represents an example of forest-based Zn-lignin battery convinced by Divyaratan Kumar and designed by Robert Brooke (Conceptualized.tech) Water-in-polymer salt electrolyte (WIPSE) for sustainable lignin batteries Divyaratan KumarDuring the course of the research underlying this thesis, Divyaratan Kumar was enrolled in Wallenberg Wood Science Center (WWSC) Academy, a graduate school from a joint research center between KTH Royal

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Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

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Water-in-polymer Salt Electrolyte (WIPSE) for Sustainable Lignin Batteries

Kumar

2023

Linköping Studies in Science and Technology. Dissertations

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Utilization of sulfonated cellulose membrane for Zn ion hybrid capacitors

Khan,

Kumar,

Lander

et al. 2024

EcoEnergy

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Zinc ion hybrid capacitors (ZHCs) are regarded as sustainable energy storage devices, largely due to the abundance of zinc and its compatibility with aqueous electrolytes. Thick glass microfiber separators are commonly employed in ZHCs because they resist penetration by Zn dendrites, a prevalent issue in these devices. However, glass fiber separators not only reduce the volumetric energy but also raise environmental concerns due to their production processes, which generate significant amounts of greenhouse gases. In this study, we propose using a sulfonated cellulose membrane (SCM) derived from softwood cellulose nanofibrils as an eco‐friendly and sustainable separator for ZHCs. Utilizing this sulfonated cellulose membrane, we achieved 2000 h of continuous plating/stripping of Zn and more than 95% coulombic efficiency. Additionally, the efficacy of SCM as a separator was validated through the successful deployment of a Zn ion hybrid capacitor, which exhibited specific energies of 42 Wh/kg. The ZHC demonstrated remarkable cyclic stability, enduring over 10 000 cycles with minimal self‐discharge behavior. This study highlights the use of a cost‐effective, thin, mechanically robust, and highly cross‐linked cellulose nanofibrils membrane for ZHCs, showcasing its potential for broader utilization in various energy storage devices.

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Water‐in‐Polymer Salt Electrolyte for Long‐Life Rechargeable Aqueous Zinc‐Lignin Battery

Kumar,

Franco,

Abdou

et al. 2024

Energy & Environ Materials

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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.

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Mass Transport in “Water-in-Polymer Salt” Electrolytes

Abstract: Published as part of the Chemistry of Materials virtual special issue "In Honor of Prof. Elsa Reichmanis".

Cited by 4 publications

References 57 publications

Water-in-polymer Salt Electrolyte (WIPSE) for Sustainable Lignin Batteries

Water-in-polymer Salt Electrolyte (WIPSE) for Sustainable Lignin Batteries

Utilization of sulfonated cellulose membrane for Zn ion hybrid capacitors

Water‐in‐Polymer Salt Electrolyte for Long‐Life Rechargeable Aqueous Zinc‐Lignin Battery

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