Manganese Dissolution: Mechanisms and Factors for Structural Stability of Mn oxide-based materials.

Saman Mesvari¹ Mojtaba Shariati Niasar² Javad Karimi-Sabet³

1) Department of Chemical Engineering, Faculty of Engineering, University of Tehran,
2) Department of Chemical Engineering, Faculty of Engineering, University of Tehran,
3) Material and Nuclear Fuel Research School (MNFRS), Nuclear Science and Technology Research Institute, Tehran,

Publication : 2nd International Conference on Recent Advances in Engineering, Innovation and Technology - Belgium(eitconf.com)
Abstract :
Manganese oxide-based materials (such as Hydrogen Manganese Oxide, HMO) are used in rechargeable batteries and lithium adsorption. Material development in these industries is focused on improving structural stability. Process conditions can increase Mn dissolution, which leads to phase changes and decrease structural stability. The Jahn-Teller effect is a distortion of the molecular structure caused by electron-electron repulsion, leading to increased Mn dissolution and reduced structural stability. By controlling the process and material parameters, such as doping, temperature, and coating, the Jahn-Teller effect can be suppressed, thus decreasing the rate of Mn dissolution and improving the structural stability of the material. In this study, the effect of these factors on Mn dissolution and the structural stability of HMO (or Lithium Manganese Oxide, LMO) is described. Controlling parameters to reduce Mn dissolution and increase structural stability is crucial for the development of advanced materials for various applications. Understanding the relationship between Mn dissolution and structural evolution is essential to solve capacity fading and stability issues.
Keywords : Lithium manganese oxide LMO HMO Lithium Mn dissolution Li-Battery.