Nickel-Rich and Lithium-Rich Layered Oxide Cathodes: Progress and Perspectives

Title
Nickel-Rich and Lithium-Rich Layered Oxide Cathodes: Progress and Perspectives
Author
선양국
Keywords
LI-ION BATTERIES; POSITIVE ELECTRODE MATERIALS; IRREVERSIBLE CAPACITY LOSS; X-RAY-ABSORPTION; IMPROVED ELECTROCHEMICAL PERFORMANCE; INITIAL COULOMBIC EFFICIENCY; TERM CYCLING PERFORMANCE; TRANSITION-METAL OXIDES; HIGH-RATE CAPABILITY; HIGH-ENERGY-DENSITY
Issue Date
2016-01
Publisher
WILEY-V C H VERLAG GMBH
Citation
ADVANCED ENERGY MATERIALS, v. 6, NO 1, Article number 1501010, Page. 1-9
Abstract
Ni-rich layered oxides and Li-rich layered oxides are topics of much research interest as cathodes for Li-ion batteries due to their low cost and higher discharge capacities compared to those of LiCoO2 and LiMn2O4. However, Ni-rich layered oxides have several pitfalls, including difficulty in synthesizing a well-ordered material with all Ni3+ ions, poor cyclability, moisture sensitivity, a thermal runaway reaction, and formation of a harmful surface layer caused by side reactions with the electrolyte. Recent efforts towards Ni-rich layered oxides have centered on optimizing the composition and processing conditions to obtain controlled bulk and surface compositions to overcome the capacity fade. Li-rich layered oxides also have negative aspects, including oxygen loss from the lattice during first charge, a large first cycle irreversible capacity loss, poor rate capability, side reactions with the electrolyte, low tap density, and voltage decay during extended cycling. Recent work on Li-rich layered oxides has focused on understanding the surface and bulk structures and eliminating the undesirable properties. Followed by a brief introduction, an account of recent developments on the understanding and performance gains of Ni-rich and Li-rich layered oxide cathodes is provided, along with future research directions.
URI
http://onlinelibrary.wiley.com/doi/10.1002/aenm.201501010/abstracthttp://hdl.handle.net/20.500.11754/30599
ISSN
1614-6832; 1614-6840
DOI
10.1002/aenm.201501010
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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