A path toward cobalt-free lithium-ion cathodes

Croy, Jason R.; Long, Brandon R.; Balasubramanian, Mahalingam

doi:10.1016/j.jpowsour.2019.227113

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A path toward cobalt-free lithium-ion cathodes

Croy, Jason R.·Long, Brandon R.·Balasubramanian, Mahalingam

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Abstract

The necessity of developing low-cobalt cathode oxides for lithium-ion batteries is increasingly apparent. The most popular strategy followed thus far in addressing this issue has been the development of LiNiO 2 -like, Ni-rich, layered LiMO 2 (M = Ni, Mn, Co; NMC) oxides with low Mn and Co contents, e.g., NMC-811. However, safety, cycle-life, and even cost could remain critical barriers to the success of such cathode materials. Herein an alternative to LiNiO2-based, low-cobalt cathodes is suggested based on modifications to the prototypical cobalt-free, layered oxide, LiNi 0.5 Mn 0.5 O 2 .

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25 ENERGY STORAGE Layered oxides Li/Ni exchange Lithium-ion Low cobalt NMC X-ray absorption

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Croy, Jason R., Long, Brandon R., Balasubramanian, Mahalingam. 2019-09-19. A path toward cobalt-free lithium-ion cathodes. https://doi.org/10.1016/j.jpowsour.2019.227113

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