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Probing the effect of surface parameters and particle size in the diffusion-induced stress of electrodes during lithium insertion

https://doi.org/10.1016/j.ijmecsci.2021.106917

Wang, Bo; Aifantis, Katerina E. (February 2022, International Journal of Mechanical Sciences)

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Enhancing the electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathodes through amorphous coatings

https://doi.org/10.1016/j.electacta.2022.140745

Dou, Lintao; Tang, Ao; Lin, Weiguang; Dong, Xin; Lu, Lu; Shang, Chaoqun; Zhang, Zhanhui; Huang, Zhiliang; Aifantis, Katerina; Hu, Pu; et al (September 2022, Electrochimica Acta)

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Capturing the differences between lithiation and sodiation of nanostructured TiS2 electrodes

https://doi.org/10.1016/j.nanoen.2019.06.016

Hu, Pu; Wang, Bo; Xiao, Dongdong; Aifantis, Katerina (September 2019, Nano Energy)

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Enhanced Electrochemical Performance of LiNi _0.8 Co _0.1 Mn _0.1 O ₂ with SiO ₂ Surface Coating Via Homogeneous Precipitation

https://doi.org/10.1002/celc.202101230

Dou, Lintao; Hu, Pu; Shang, Chaoqun; Wang, Heng; Xiao, Dongdong; Ahuja, Utkarsh; Aifantis, Katerina; Zhang, Zhanhui; Huang, Zhiliang (November 2021, ChemElectroChem)

Abstract Ni‐rich LiNi_0.8Co_0.1Mn_0.1O₂(NCM811) has been considered as a promising cathode material for high energy density lithium‐ion batteries. However, it experiences undesirable interfacial side‐reactions with the electrolyte, which lead to a rapid capacity decay. In this work, a homogeneous precipitation method is proposed for forming a uniform silicon dioxide (SiO₂) coating on the NCM811 surface. The strong Si−O network provided a stable protective layer between the NCM811 active material and electrolyte to improve the electrochemical stability. As a result, the NCM811@SiO₂cathode showed superior cycling stability (84.9 % after 100 cycles at 0.2 C) and rate capability (142.7 mA h g⁻¹at 5 C) compared to the pristine NCM811 cathode (56.6 % after 100 cycles, 127.9 mA h g⁻¹at 5 C). Moreover, the SiO₂coating effectively suppressed voltage decay and pulverization of the NCM811 particles during long term cycling. This uniform coating technique offers a viable approach for stabilizing Ni‐rich cathode materials for high‐energy density lithium‐ion batteries.
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