Controlled Atomic Solubility in Mn‐Rich Composite Material to Achieve Superior Electrochemical Performance for Li‐Ion Batteries

Junghwa Lee , Qinghua Zhang , Jieun Kim , Nicolas Dupre (1) , Maxim Avdeev , Mihee Jeong , Won‐sub Yoon , Lin Gu , Byoungwoo Kang

1 CNRS - Centre National de la Recherche Scientifique

The impending quest for high energy density and high power density electrode materials for lithium-ion batteries has been intensified to meet strongly growing demand for powering electric vehicles. Conventional layered oxides such as Co-rich LiCoO2 and Ni-rich Li(NixMnyCoz)O2 that rely on only transition metal redox reaction have been faced with growing constraints on the resources and the availability due to soaring price on cobalt. Therefore, Mn-rich electrode materials excluding cobalt would be desirable with respect to available resources and low cost. Here, we report on the strategy of achieving both high energy density and high power density in Mn-rich electrode materials by controlling of the atoms solubility between phases in a composite. The resulting Mn-rich material that is composed of defective spinel phase and partially cation-disordered layered phase can achieve the highest

Domaines: Matériaux

Junghwa Lee, Qinghua Zhang, Jieun Kim, Nicolas Dupre, Maxim Avdeev, et al.. Controlled Atomic Solubility in Mn‐Rich Composite Material to Achieve Superior Electrochemical Performance for Li‐Ion Batteries. Advanced Energy Materials, 2019, 10 (5), pp.1902231. ⟨10.1002/aenm.201902231⟩. ⟨hal-02992234⟩