Constructing “Li-rich Ni-rich” oxide cathodes for high-energy-density Li-ion batteries - Chimie du solide et de l'énergie Access content directly
Journal Articles Energy & Environmental Science Year : 2023

Constructing “Li-rich Ni-rich” oxide cathodes for high-energy-density Li-ion batteries


The current exploration of high-energy-density cathode materials for Li-ion batteries is mainly concentrated on either so-called “Li-rich” or “Ni-rich” oxides. However, both are suffering from formidable practical challenges. Here, we combine these two concepts to obtain “Li-rich Ni-rich” oxides in pursuit of more practical high-energy-density cathodes. As a proof of concept, we synthesized an array of Li1+yNi(3−5y)/3Mo2y/3O2 oxides, whose structures were identified to be the coexistence of LiNiO2-rich and Li4MoO5-rich domains with the aid of XRD, TEM, and NMR techniques. Such an intergrowth structure of 5–20 nm size enables excellent mechanical and structural reversibility for the layered rock-salt LiNiO2-rich domain upon cycling thanks to the robust cubic rock-salt Li4MoO5-rich domain enabling an “epitaxial stabilization” effect. As a result, we achieved high capacities (>220 mA h g−1) with Ni contents as low as 80%; the Li1.09Ni0.85Mo0.06O2 member (y = 0.09) shows much improved cycling performances (91% capacity retention for 100 cycles at C/10) compared with pure LiNiO2. This work validates the feasibility of constructing Li-rich Ni-rich compounds in the form of intergrowing domains and hence unlocks vast possibilities for future cathode design.
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Dates and versions

hal-04047592 , version 1 (27-03-2023)
hal-04047592 , version 2 (07-04-2023)



Biao Li, Gwenaëlle Rousse, Leiting Zhang, Maxim Avdeev, Michaël Deschamps, et al.. Constructing “Li-rich Ni-rich” oxide cathodes for high-energy-density Li-ion batteries. Energy & Environmental Science, 2023, 16 (3), pp.1210-1222. ⟨10.1039/D2EE03969A⟩. ⟨hal-04047592v2⟩
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