Studies of nickel-rich LiNi0.85Co0.10Mn0.05O2 cathode materials doped with molybdenum ions for lithium-ion batteries

Francis Amalraj Susai, Daniela Kovacheva, Tatyana Kravchuk, Yaron Kauffmann, Sandipan Maiti, Arup Chakraborty, Sooraj Kunnikuruvan, Michael Talianker, Hadar Sclar, Yafit Fleger, Boris Markovsky, Doron Aurbach

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


In this work, we continued our systematic investigations on synthesis, structural studies, and electrochemical behavior of Ni-rich materials Li[NixCoyMnz]O2 (x + y + z = 1; x ≥ 0.8) for advanced lithium-ion batteries (LIBs). We focused, herein, on LiNi0.85Co0.10Mn0.05O2 (NCM85) and demonstrated that doping this material with high-charge cation Mo6+ (1 at. %, by a minor nickel substitution) results in substantially stable cycling performance, increased rate capability, lowering of the voltage hysteresis, and impedance in Li-cells with EC-EMC/LiPF6 solutions. Incorporation of Mo-dopant into the NCM85 structure was carried out by in-situ approach, upon the synthesis using ammonium molybdate as the precursor. From X-ray diffraction studies and based on our previous investigation of Mo-doped NCM523 and Ni-rich NCM811 materials, it was revealed that Mo6+ preferably substitutes Ni residing either in 3a or 3b sites. We correlated the improved behavior of the doped NCM85 electrode materials in Li-cells with a partial Mo segregation at the surface and at the grain boundaries, a tendency established previously in our lab for the other members of the Li[NixCoyMnz ]O2 family.

Original languageEnglish
Article number2070
Issue number8
StatePublished - 2 Apr 2021


  • Cycling behavior
  • Dopant segregation at the surface
  • LiNiCoMnO cathode materials
  • Lithium-ion batteries
  • Mo-doping

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics


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