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review · Chemistry - A European Journal

Basics and Advances of Manganese‐Based Cathode Materials for Aqueous Zinc‐Ion Batteries

202421 citationsOpen accessBeni Suef University

In plain language

Aqueous zinc-ion batteries represent a promising, low-cost, and safe alternative to conventional alkali metal energy storage systems. Nanostructured manganese-based oxides across various polymorphs are leading cathode candidates for these batteries due to their wide oxidation states and established manufacturing processes. Nevertheless, these materials face practical limitations, notably poor cycling stability alongside weak electronic and ionic conductivity. To tackle these performance constraints, several material engineering techniques have been implemented. These methods include phase and defect engineering, foreign atom doping using metal or nonmetal species, and composite formation with carbonaceous matrices or conducting polymers. An evaluation of these modification approaches outlines their respective strengths and trade-offs in boosting cathode electrochemistry, highlighting the remaining technical hurdles and pathways required to advance manganese oxide electrodes for stable, high-performance battery systems.

Key takeaways

  • Aqueous zinc-ion batteries offer an affordable, safe energy storage alternative to alkali metal systems.
  • Manganese-based oxides are promising cathodes but are limited by low conductivity and poor cycling stability.
  • Performance can be enhanced through defect engineering, foreign atom doping, and combining oxides with conductive polymers or carbon materials.

Why it matters

Transitioning to safer and more sustainable energy systems requires batteries that avoid hazardous or scarce alkali metals. Aqueous zinc-ion batteries offer an inherently safer and less expensive option. Resolving the durability and conductivity issues of manganese-based components is essential for turning these systems into dependable, high-capacity energy storage solutions.

Commercialisation angle

This work informs battery developers and material manufacturers working on next-generation grid and stationary storage systems. By detailing methods to overcome the degradation and conductivity limits of manganese cathodes, it assists early-stage materials optimisation. Because it assesses fundamental modification techniques and existing technical challenges, the underlying technology remains in the early-stage research phase rather than near-market deployment.

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Abstract

It is greatly crucial to develop low-cost energy storage candidates with high safety and stability to replace alkali metal systems for a sustainable future. Recently, aqueous zinc-ion batteries (ZIBs) have received tremendous interest owing to their low cost, high safety, wide oxidation states, and sophisticated fabrication process. Nanostructured manganese (Mn)-based oxides in different polymorphs are the potential cathode materials for the widespread application of ZIBs. However, Mn-based oxide materials suffer from several drawbacks, such as low electronic/ionic conductivity and poor cycling performance. To overcome these issues, various structural modification strategies have been adopted to enhance their electrochemical activity, including phase/defect engineering, doping with foreign atoms (e. g., metal and/or nonmetal atoms), and coupling with carbon materials or conducting polymers. Herein, this review targets to summarize the advantages and disadvantages of the above-mentioned strategies to improve the electrochemical performance of the cathodic part of ZIBs. The challenges and suggestions for the development of manganese oxides for ZIBs are put forward.

Research topics

  • Advanced battery technologies research
  • Electrochemical Analysis and Applications
  • Electrocatalysts for Energy Conversion

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DOI: 10.1002/chem.202403425

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