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. 2025 Oct 20;10(11):3013-3028.
doi: 10.1039/d5nh00290g.

Nanostructured LiNi0.80Co0.15Al0.05O2 (NCA) for fast-charging, high-capacity battery cathodes

Victoria M Basile  1 , Chun-Han Lai  2 , Grace Y Kim  1 , Christopher S Choi  2 , Danielle M Butts  2 , Kodi Thurber  1 , Sophia C King  1 , Sarah H Tolbert  1   2   3
Affiliations

Nanostructured LiNi0.80Co0.15Al0.05O2 (NCA) for fast-charging, high-capacity battery cathodes

Victoria M Basile et al. Nanoscale Horiz. .

Abstract

Nanostructuring, which shortens lithium-ion diffusion lengths, can help facilitate pseudocapacitive behavior in some battery materials. Here, nanostructured LiNi0.80Co0.15Al0.05O2 (NCA), with porosity and decreased crystallite size compared to commercial bulk NCA, was synthesized using a colloidal polymer template. Small particles (∼150 nm) were obtained using rapid thermal annealing (RTA), while medium particles (∼300 nm) were obtained with conventional heating. X-ray photoelectron spectroscopy (XPS) was used to quantify surface Li2CO3 and NiO-like contaminants, which hinder lithium-ion diffusion, especially at fast rates. Electrochemical kinetics studies were used to quantify the benefits associated with nanostructuring. While all nanostructured samples displayed faster charge/discharge kinetics compared to the bulk materials, NCA with medium particle sizes showed the highest specific capacity at the fast rates (150 mAh g-1 at 16C). To explore full-cell behavior, nanostructured NCA was paired with a pseudocapacitive anode, achieving 95 W h kg-1 energy density at a current density of 1260 W kg-1 and stable cycling for 2000 cycles at 10C.

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Conflict of interest statement

Financial Conflict of Interest Statement

No financial interest to disclose.

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