Lithium nickel cobalt aluminium oxides

Source: Wikipedia, the free encyclopedia.

The lithium nickel cobalt aluminium oxides (abbreviated as Li-NCA, LNCA, or NCA) are a group of mixed

electric appliances
, x ≈ 0.8, and the voltage of those batteries is between 3.6 V and 4.0 V, at a nominal voltage of 3.6 V or 3.7 V. A version of the oxides currently in use in 2019 is LiNi0.84Co0.12Al0.04O2.

Properties of NCA

The usable charge storage capacity of NCA is about 180 to 200 mAh/g.[1] This is well below the theoretical values; for LiNi0.8Co0.15Al0.05O2 this is 279 mAh/g.[2] However, the capacity of NCA is significantly higher than that of alternative materials such as lithium cobalt oxide LiCoO2 with 148 mAh/g, lithium iron phosphate LiFePO4 with 165 mAh/g and NMC 333 LiNi0.33Mn0.33Co0.33O2 with 170 mAh/g.[2] Like LiCoO2 and NMC, NCA belongs to the cathode materials with layer structure.[1] Due to the high voltage, NCA enables batteries with high energy density. Another advantage of NCA is its excellent fast charging capability.[1] Disadvantages are the high costs and the limited resources of cobalt and nickel.[1]

The two materials NCA and NMC have related structures, quite similar electrochemical behaviour and show similar performance, in particular relatively high energy densities and relatively high performance. Noteworthy, Ni is cycled during the battery operation between

oxidation states +2 and +3.5, Co- between +2 and +3, and Mn and Al remain electrochemically inactive.[3]

It is estimated that the NCA battery pack Tesla Model 3 contains between 4.5 and 9.5 kg of cobalt and 11.6 kg of lithium.[4]

Kristallstruktur von Nickel(IV)-oxid

Lithium nickel oxide LiNiO2, which is closely related to NCA, or nickel oxide NiO2 itself, cannot yet be used as a battery material because it is mechanically unstable, shows a rapid loss of capacity and has safety issues.[5]

Nickel-rich NCA: advantages and limitations

NCAs LiNixCoyAlzO2 with x ≥ 0.8 are called nickel rich;

molar fraction of nickel in the posode increases both the mAh/g number and the cell voltage. However, as the nickel content increases, the risk of thermal breakdown and premature aging of the battery also increases. When a typical NCA battery is heated to 180 °C, it will thermally run away.[7] If the battery was previously overcharged, thermal run away can occur even at 65 °C.[7]
The aluminium ions in NCA increase stability and safety, but they reduce capacity because they do not participate in oxidation and reduction themselves.

Modifications of the material

To make NCA more resistant, in particular for batteries that need to operate at temperatures above 50 °C, the NCA active material is usually coated. The coatings demonstrated in research may comprise fluorides such as aluminium fluoride AlF3, crystalline oxides (e.g. CoO2, TiO2, NMC) or glassy oxides (silicon dioxide SiO2) or phosphates such as FePO4.[2]

NCA batteries: Manufacturers and use

The main producers of NCA and their market shares in 2015 were

Tongren County in Qinghai Province, a plant has been under construction since 2019, which will initially produce 1500 tons of NCA per month.[11]

As of 2018, the most important manufacturer of NCA batteries was reportedly

better source needed
]

References

  1. ^ a b c d Marca M. Doeff (2013), Ralph J. Brodd (ed.), "Battery Cathodes: Selected Entries from the Encyclopedia of Sustainability Science and Technology", Batteries for Sustainability, New York, NY: Springer, p. 5–49,
    ISBN 978-1-4614-5790-9
  2. ^ a b c d Agus Purwanto; Cornelius Satria Yudha; U Ubaidillah; Hendri Widiyandari; Takashi Ogi (2018-09-26), "NCA cathode material: synthesis methods and performance enhancement efforts", Materials Research Express, vol. 5, no. 12, IOP Publishing, p. 122001,
    S2CID 106388037
  3. ^ A reflection on lithium-ion battery cathode chemistry. 2020. Nature Communications. 11/1, 9. A. Manthiram. doi: 10.1038/s41467-020-15355-0.
  4. ^ Evan Leon (2018-10-26). "From Mine to Market: Energy Metals & Electric Vehicle Industrialization" (PDF). Energy.umich.edu. University of Michigan Energy Institute. Archived from the original (PDF) on 2019-06-16.
  5. ^ a b c Matteo Bianchini; Maria Roca-Ayats; Pascal Hartmann; Torsten Brezesinski; Jürgen Janek (2019-07-29), "There and Back Again-The Journey of LiNiO2 as a Cathode Active Material", Angewandte Chemie International Edition, vol. 58, no. 31, Wiley-VCH, pp. 10434–10458,
    S2CID 54479125
    , retrieved 2021-11-26
  6. ^ Sheng S. Zhang (January 2020), "Problems and their origins of Ni-rich layered oxide cathode materials", Energy Storage Materials, vol. 24, pp. 247–254, retrieved 2021-11-26
  7. ^ a b Xuan Liu; Kang Li; Xiang Li (2018). "The Electrochemical Performance and Applications of Several Popular Lithium-ion Batteries for Electric Vehicles - A Review". In K. Li; J. Zhang; M. Chen; Z. Yang; Q. Niu (eds.). Advances in Green Energy Systems and Smart Grid. ICSEE 2018, IMIOT 2018. Communications in Computer and Information Science. Vol. 925. Springer, Singapore. pp. 201–213.
    ISBN 9789811323805. Retrieved 2021-11-26. See also this alternative academic article source.
  8. ^ a b Christophe Pillot (2017-01-30). "Lithium ion battery raw material Supply & demand 2016–2025" (PDF). avicenne.com. Avicenne.
  9. ^ a b Yuka Obayashi, Ritsuko Shimizu (2018-09-13). "Japan's Sumitomo to focus on battery material supply to Panasonic, Toyota". Reuters.
  10. ^ James Ayre (2016-02-26). "Sumitomo Metal Mining Boosting NCA (Used In Lithium-Ion Cathodes) Production By 38 %, In Anticipation Of Tesla Model 3 Launch". evobsession.com.[permanent dead link]
  11. ^ Frank Liu (2019-11-13). "Construction of 50,000 mt NCA cathode material project began in Qinghai". SMM News – News.metal.com > News > Industry News. Shanghai Metals Market SMM, SMM Information & Technology Co.
  12. ^ James Ayre (2017-12-02). "Tesla Batteries 101 — Production Capacity, Uses, Chemistry, & Future Plans". CleanTechnica.
  13. ^ Fred Lambert (2017-05-04). "Tesla battery researcher unveils new chemistry to increase lifecycle at high voltage". Electrek. Electrek, 9to5 network.
  14. ^ Gyeong Won Nam; Nam-Yung Park; Kang-Joon Park; Jihui Yang; Jun Liu (2019-12-13), "Capacity Fading of Ni-Rich NCA Cathodes: Effect of Microcracking Extent", ACS Energy Letters, vol. 4, no. 12, pp. 2995–3001,
    S2CID 210234684
    , retrieved 2021-11-26
  15. ^ "Dyson Cordless Vacuum Comparison Chart: Comparing Best With The Best - Powertoollab". Best Power Tools for Sale, Expert Reviews and Guides. 2018-08-22.[
    better source needed
    ]
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