A New Sodium-Based Aqueous Rechargeable Battery System: The Special Case of Na0.44MnO2/Dissolved Sodium Polysulfide - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ENERGY TECHNOLOGY Année : 2017

A New Sodium-Based Aqueous Rechargeable Battery System: The Special Case of Na0.44MnO2/Dissolved Sodium Polysulfide

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Résumé

Herein, the electrochemical performance of a new sodium-based aqueous rechargeable battery is demonstrated consisting of Na0.44MnO2 as cathode and dissolved sodium polysulfide (i.e., Na2S5) as anolyte. Na0.44MnO2 synthesized through a solid-state reaction method and dissolved Na2S5 anolyte are tested separately in a half-cell configuration, both giving rise to stable cycling performances. As the anode side of the desired full-cell configuration is at present dissolved in the electrolyte, the positive and negative electrodes need to be separated with an ion-selective membrane that is permeable to sodium ions and impermeable to polysulfide species. Hence, Nafion is tested as a barrier to prevent the leakage of the dissolved polysulfides. After careful tuning of the osmotic pressure inside the Nafion membrane, leakage of the dissolved polysulfide from the anode to the cathode side is eliminated, resulting in a 0.8V average voltage, low-cost sodium-ion aqueous cell.

Domaines

Chimie Matériaux
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Dates et versions

hal-03611427 , version 1 (17-03-2022)

Identifiants

Citer

Burak Tekin, Serkan Sevinc, Mathieu Morcrette, Rezan Demir-Cakan. A New Sodium-Based Aqueous Rechargeable Battery System: The Special Case of Na0.44MnO2/Dissolved Sodium Polysulfide. ENERGY TECHNOLOGY, 2017, 5 (12), pp.2182-2188. ⟨10.1002/ente.201700245⟩. ⟨hal-03611427⟩
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