Publication date: 10th April 2024
LiM0.5Mn1.5O4 (where M = Ni, Fe) compositions have emerged as a focal point of extensive research in the context of positive electrode materials for lithium-ion batteries. These materials, crystallizing in the spinel structure, have captivated significant attention owing to their remarkable ability to substantially enhance the average voltage compared to layered oxides or Mn-rich compositions, thereby holding great promise for advancing the performance of Li-ion battery systems. Moreover, these compositions are of particular interest due to their sustainable nature, being cobalt-free. This attribute aligns with the growing emphasis on eco-friendly battery technologies, contributing to a more sustainable and environmentally conscious approach to energy storage.
Exploring the intricate details of the crystal structures and compositional variations within this family of compounds becomes imperative for unlocking their full potential and contributing to the ongoing advancements in energy storage technologies. This study delves into a comprehensive analysis of the crystal chemistry of LiM0.5Mn1.5O4 (M = Ni, Fe) compositions, shedding light on their structural and microstructural details (including disorder and defects) and the pivotal role these play in enhancing the capacity and rate performance of these materials. [1-3]
The authors are grateful to the European Commission for the support of the work, performed within the EU H2020 project 3beLiEVe (grant agreement 875033). The Spanish MCIN/AEI/10.13039/50110001103 and the Basque Government are also acknowledged for their support through the project ION-SELF ref. PID2019-106519RB-I00 and the PhD grant ref. PRE-2021-2-011, respectively.
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