How to increase the potential of aqueous Zn-MnO2 batteries: The effect of pH gradient electrolyte

Durena, Ramona; Zukuls, Anzelms; Vanags, Mārtiņš; Šutka, Andris

doi:10.1016/j.electacta.2022.141275

Cited by 5 publications

(7 citation statements)

References 44 publications

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“…Hydrogels have emerged as a viable solution for addressing the electrolyte challenges of ZIBs. Dūrena et al reported on a rechargeable film-free amphiphilic zinc-manganese dioxide aqueous solution battery with an open-circuit potential of 2.4 V. 92 They utilized alkaline (KOH), acidic (H 2 SO 4 ), and neutral (K 2 SO 4 ) Pluronic F-127 hydrogels as electrolytes. By placing the anode in an alkaline environment and the cathode in an acidic environ- ment, they successfully expanded the potential window in the aqueous medium and avoided precipitation reactions of hydrogen and oxygen.…”

Section: Hydrogel For Electrolytementioning

confidence: 99%

Hydrogel-stabilized zinc ion batteries: progress and outlook

Li,

Jia,

Yue

et al. 2024

Green Chem.

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Section: Hydrogel For Electrolytementioning

confidence: 99%

Hydrogel-stabilized zinc ion batteries: progress and outlook

Li,

Jia,

Yue

et al. 2024

Green Chem.

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“…This has been realized by placing the Zn anode in an alkaline electrolyte and the MnO 2 cathode in an acidic electrolyte, as shown in Figure 5. By creating such a unique battery cell type, it is possible to increase the OCP to 2.45 V according to reactions ( 8)- (10) [32,58,59].…”

Section: Dual/amphoteric Electrolyte Zn-mno 2 Batteriesmentioning

confidence: 99%

A Short Review: Comparison of Zinc–Manganese Dioxide Batteries with Different pH Aqueous Electrolytes

Durena¹,

Zukuls²

2023

Batteries

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As the world moves towards sustainable and renewable energy sources, there is a need for reliable energy storage systems. A good candidate for such an application could be to improve secondary aqueous zinc–manganese dioxide (Zn-MnO2) batteries. For this reason, different aqueous Zn-MnO2 battery technologies are discussed in this short review, focusing on how electrolytes with different pH affect the battery. Improvements and achievements in alkaline aqueous Zn-MnO2 batteries the recent years have been briefly reviewed. Additionally, mild to acidic aqueous electrolyte employment in Zn-MnO2 batteries has been described, acknowledging their potential success, as such a battery design can increase the potential by up to 2 V. However, we have also recognized a novel battery electrolyte type that could increase even more scientific interest in aqueous Zn-MnO2 batteries. Consisting of an alkaline electrolyte in the anode compartment and an acidic electrolyte in the cathode compartment, this dual (amphoteric) electrolyte system permits the extension of the battery cell potential above 2 V without water decomposition. In addition, papers describing pH immobilization in aqueous zinc–manganese compound batteries and the achieved results are reported and discussed.

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“…Furthermore, there is also the approach of decoupling the electrolyte ranges, so that the optimum pH value can be selected in each case regarding performance [113]. In this case, however, the different areas must be separated by suitable measures, such as jellification [57,[113][114][115] or through special membranes [58,116,117], since otherwise they would mix due to diffusion processes. Shen et al, for example, use hydrogel electrolyte in which three layers with different pH values are applied on top of each other [115].…”

Section: Cell-level Engineeringmentioning

confidence: 99%

Post-Lithium Batteries with Zinc for the Energy Transition

et al. 2023

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The energy transition is only feasible by using household or large photovoltaic powerplants. However, efficient use of photovoltaic power independently of other energy sources can only be accomplished employing batteries. The ever-growing demand for the stationary storage of volatile renewable energy poses new challenges in terms of cost, resource availability and safety. The development of Lithium-Ion Batteries (LIB) has been tremendously pushed by the mobile phone industry and the current need for high-voltage traction batteries. This path of global success is primarily based on its high energy density. Due to changing requirements, other aspects come to the fore that require a rebalancing of different technologies in the “Battery Ecosystem”. In this paper we discuss the evolution of zinc and manganese dioxide-based aqueous battery technologies and identify why recent findings in the field of the reaction mechanism and the electrolyte make rechargeable Zn-MnO2 batteries (ZMB), commonly known as so-called Zinc-Ion batteries (ZIB), competitive for stationary applications. Finally, a perspective on current challenges for practical application and concepts for future research is provided. This work is intended to classify the current state of research on ZMB and to highlight the further potential on its way to the market within the “Battery Ecosystem”, discussing key parameters such as safety, cost, cycle life, energy and power density, material abundancy, sustainability, modelling and cell/module development.

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How to increase the potential of aqueous Zn-MnO2 batteries: The effect of pH gradient electrolyte

Cited by 5 publications

References 44 publications

Hydrogel-stabilized zinc ion batteries: progress and outlook

Hydrogel-stabilized zinc ion batteries: progress and outlook

A Short Review: Comparison of Zinc–Manganese Dioxide Batteries with Different pH Aqueous Electrolytes

Post-Lithium Batteries with Zinc for the Energy Transition

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