Comparative Study Nickel Rich Layered Oxides: NMC 622, NMC ...

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The following article is Free articleComparative Study Nickel Rich Layered Oxides: NMC 622, NMC 811 and NCA Cathode Materials for Lithium Ion Battery

Fredrick Omenya, Natasha A. Chernova, Hui Zhou, Carrie Siu and M. Stanley Whittingham

© 2018 ECS - The Electrochemical Society ECS Meeting Abstracts, Volume MA2018-01, A03-Li-ion Batteries and BeyondCitation Fredrick Omenya et al 2018 Meet. Abstr. MA2018-01 531DOI 10.1149/MA2018-01/3/531

Authors

Fredrick Omenya

AFFILIATIONS

Binghamton University

Natasha A. Chernova

AFFILIATIONS

NECCES at Binghamton University

Hui Zhou

AFFILIATIONS

Binghamton University

Carrie Siu

AFFILIATIONS

NECCES at Binghamton University

M. Stanley Whittingham

AFFILIATIONS

NECCES at Binghamton University

Notes

3 E-mail: [email protected]

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Open scienceAuthors

Fredrick Omenya

AFFILIATIONS

Binghamton University

Natasha A. Chernova

AFFILIATIONS

NECCES at Binghamton University

Hui Zhou

AFFILIATIONS

Binghamton University

Carrie Siu

AFFILIATIONS

NECCES at Binghamton University

M. Stanley Whittingham

AFFILIATIONS

NECCES at Binghamton University

Notes

3 E-mail: [email protected]

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Article information2151-2043/MA2018-01/3/531

Abstract

LiCoO2 has conquered the cathode market for lithium ion batteries; recently the mixed transition metal oxide lithium nickel manganese cobalt dioxide have gained attention due to their superior electrochemical properties, better thermal stability, and lower cost. Nickel-rich compositions of lithium nickel manganese cobalt oxide (NMC) have been developed as promising high-energy, high-voltage and improved rate cathode materials capable of significantly increasing the energy density of lithium-ion batteries.

Here we report a systematic comparative study on rate capability, charge discharge behavior and nickel/lithium mixing of the nickel-rich layered oxides, NMC622, NMC811 and NCA. The results showed that both NMC622 and NMC811 have pure hexagonal layered phase with Ni/Li mixing below 4%. Both samples have similar specific capacity of about 220 mAh/g at current densities, C/10; however, NMC811 demonstrated superior electrochemical performance compared to NMC611 at higher rates. The 622 sample showed a strong dependence on the electrode loading, higher electrode loading above 15 mg/cm2 had poor performance compared to lower loading at the same current density in mA/cm2 while NMC811 sample does not show such loading dependence. This work was supported by the DOE-EERE-Battery500 consortium.

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