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Angew Chem Int Ed Engl. 2015 Apr 7;54(15):4440-57. doi: 10.1002/anie.201409262. Epub 2015 Mar 20.

Nickel-rich layered lithium transition-metal oxide for high-energy lithium-ion batteries.

Author information

1
Department of Energy Engineering and School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798 (Republic of Korea) http://www.jpcho.com.

Abstract

High energy-density lithium-ion batteries are in demand for portable electronic devices and electrical vehicles. Since the energy density of the batteries relies heavily on the cathode material used, major research efforts have been made to develop alternative cathode materials with a higher degree of lithium utilization and specific energy density. In particular, layered, Ni-rich, lithium transition-metal oxides can deliver higher capacity at lower cost than the conventional LiCoO2 . However, for these Ni-rich compounds there are still several problems associated with their cycle life, thermal stability, and safety. Herein the performance enhancement of Ni-rich cathode materials through structure tuning or interface engineering is summarized. The underlying mechanisms and remaining challenges will also be discussed.

KEYWORDS:

cation mixing; layered structure; lithium-ion batteries; nickel; surface reactions

PMID:
25801735
DOI:
10.1002/anie.201409262

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