| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sel, Ozlem
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Current collector-free symmetric μ-supercapacitor based on a ternary composite of graphene, polydopamine and Co 3 O 4citations
- 2023Current collectors corrosion behaviours and rechargeability of TiO2 in Aqueous Electrolyte Aluminium-ion batteriescitations
- 2023Highly Ordered Graphene Polydopamine Composite Allowing Fast Motion of Cations: Toward a High‐Performance Microsupercapacitorcitations
- 2022Identifying interfacial mechanisms limitations within aqueous Zn-MnO2 batteries and means to cure them with additivescitations
- 2022Identifying interfacial mechanisms limitations within aqueous Zn-MnO2 batteries and means to cure them with additivescitations
- 2022Interface Properties of 2D Graphene–Polydopamine Composite Electrodes in Protic Ionic Liquid-Based Electrolytes Explored by Advanced Electrogravimetrycitations
- 2022Aqueous Multivalent Charge Storage Mechanism in Aromatic Diamine-Based Organic Electrodescitations
- 2021Poly( ortho -phenylenediamine) overlaid fibrous carbon networks exhibiting a synergistic effect for enhanced performance in hybrid micro energy storage devicescitations
- 2021Poly( ortho -phenylenediamine) overlaid fibrous carbon networks exhibiting a synergistic effect for enhanced performance in hybrid micro energy storage devicescitations
- 2021Single Wall Carbon Nanotubes/Polypyrrole Composite Thin Film Electrodes: Investigation of Interfacial Ion Exchange Behaviorcitations
- 2021Scrutiny of the LiCoO 2 Composite Electrode/Electrolyte Interface by Advanced Electrogravimetry and Implications for Aqueous Li-Ion Batteriescitations
- 2021Electrosynthesis of hierarchical Cu2O–Cu(OH)2 nanodendrites supported on carbon nanofibers/poly(para-phenylenediamine) nanocomposite as high-efficiency catalysts for methanol electrooxidationcitations
- 2021Preventing Graphene from Restacking via Bioinspired Chemical Inserts: Toward a Superior 2D Micro-supercapacitor Electrodecitations
- 2020Prompt microwave-assisted synthesis of carbon coated Si nanocomposites as anode for lithium-ion batteriescitations
- 2020Making advanced electrogravimetry as an affordable analytical tool for the battery interface characterizationcitations
- 2019Correlation between the interfacial ion dynamics and charge storage properties of poly(ortho-phenylenediamine) electrodes exhibiting high cycling stability.
- 2019Correlation between the interfacial ion dynamics and charge storage properties of poly(ortho-phenylenediamine) electrodes exhibiting high cycling stability.
- 2019Ion Dynamics at the Single Wall Carbon Nanotube Based Composite Electrode/Electrolyte Interface: Influence of the Cation Size and Electrolyte pHcitations
- 2018Charge storage properties of single wall carbon nanotubes/Prussian blue nanocube composites studied by multi-scale coupled electrogravimetric methodscitations
- 2017Dynamic Resolution of Ion Transfer in Electrochemically Reduced Graphene Oxides Revealed by Electrogravimetric Impedancecitations
- 2017Correlation between the proton conductivity and diffusion coefficient of sulfonic acid functionalized chitosan and Nafion composites via impedance spectroscopy measurementscitations
- 2014Influence of the Incorporation of CeO2 Nanoparticles on the Ion Exchange Behavior of Dodecylsulfate Doped Polypyrrole Films: Ac-Electrogravimetry Investigationscitations
Places of action
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article
Identifying interfacial mechanisms limitations within aqueous Zn-MnO2 batteries and means to cure them with additives
Abstract
Li-ion batteries are playing a key role within the field of electrical mobility, grid applications and related objects owing to their high energy densities and long lifetime, but their sustainability remains to be improved. Pushing in this direction, there is a rising interest towards rechargeable aqueous batteries. Great efforts are devoted to turn the primary alkaline zinc-manganese dioxide batteries that have dominated the primary battery applications into rechargeable systems. This turns out to be a colossal task owing to the complexity of the Zn-MnO2 chemistry that is not yet fully rationalized, thus causing delay in practical deployment. In this work we revisit this chemistry by combining fundamental solution chemistry considerations and complementary analytical techniques (TEM, Raman spectroscopy and EQCM) together with the assembly of cells using either MnO2 or MnO2-free initial positive electrodes. We confirm the key role of the electrolyte together with the inseparable link between its pH and the system's electrochemical response. Moreover, during discharge and charge, we provide experimental evidence for the occurrence of MnO2 electrodissolution and back electrodeposition conjointly with the formation of soluble zinc hydroxides up to chemical precipitation and back dissolution of a Zn4SO4(OH)6.xH2O phase. We show that this phase is essential in the buffering of the system's pH and demonstrate the beneficial role of its initial presence in the positive electrode composite. Further pushing the idea of buffering the pH of the electrolyte, we propose the use of additives such as ZnO, Mg(OH)2 or La(OH)3 that enhance the capacity retention upon cycling, while slightly penalize the cell capacity. These insights provide missing links regarding the interplay between the conjoint electrochemical-chemical reactions ruling the functioning of rechargeable Zn-MnO2 batteries, hence providing a step forward towards their development.