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Huang H, Qiao L, Zhou H, Tang Y, Wahila MJ, Liu H, Liu P, Zhou G, Smeu M, Liu H. Efficacy of atomic layer deposition of Al 2O 3 on composite LiNi 0.8Mn 0.1Co 0.1O 2 electrode for Li-ion batteries. Sci Rep 2024; 14:18180. [PMID: 39107397 PMCID: PMC11303531 DOI: 10.1038/s41598-024-69330-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 08/02/2024] [Indexed: 08/10/2024] Open
Abstract
LiNi0.8Mn0.1Co0.1O2 (NMC811) is a popular cathode material for Li-ion batteries, yet degradation and side reactions at the cathode-electrolyte interface pose significant challenges to their long-term cycling stability. Coating LiNixMnyCo1-x-yO2 (NMC) with refractory materials has been widely used to improve the stability of the cathode-electrolyte interface, but mixed results have been reported for Al2O3 coatings of the Ni-rich NMC811 materials. To elucidate the role and effect of the Al2O3 coating, we have coated commercial-grade NMC811 electrodes with Al2O3 by the atomic layer deposition (ALD) technique. Through a systematic investigation of the long-term cycling stability at different upper cutoff voltages, the stability against ambient storage, the rate capability, and the charger transfer kinetics, our results show no significant differences between the Al2O3-coated and the bare (uncoated) electrodes. This highlights the contentious role of Al2O3 coating on Ni-rich NMC cathodes and calls into question the benefits of coating on commercial-grade electrodes.
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Affiliation(s)
- Heran Huang
- Materials Science and Engineering, Binghamton University, Binghamton, NY, 13902-6000, USA
| | - Linna Qiao
- Materials Science and Engineering, Binghamton University, Binghamton, NY, 13902-6000, USA
| | - Hui Zhou
- Materials Science and Engineering, Binghamton University, Binghamton, NY, 13902-6000, USA
| | - Yalun Tang
- Department of Electrical and Computer Engineering, University of California San Diego, 9500 Gilman Drive, La Jolla, CA, 92093, USA
| | - Matthew J Wahila
- Analytical and Diagnostics Lab, Binghamton University, Binghamton, NY, 13902-6000, USA
| | - Haodong Liu
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Ping Liu
- Department of NanoEngineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Guangwen Zhou
- Materials Science and Engineering, Binghamton University, Binghamton, NY, 13902-6000, USA
- Department of Mechanical Engineering, Binghamton University, Binghamton, NY, 13902-6000, USA
| | - Manuel Smeu
- Materials Science and Engineering, Binghamton University, Binghamton, NY, 13902-6000, USA
- Department of Physics, Applied Physics and Astronomy, Binghamton University, Binghamton, NY, 13902-6000, USA
| | - Hao Liu
- Materials Science and Engineering, Binghamton University, Binghamton, NY, 13902-6000, USA.
- Department of Chemistry, Binghamton University, Binghamton, NY, 13902-6000, USA.
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