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Hydrothermal Synthesis of Hierarchical Hollow Li(Ni 0. 8 Co 0 . 15 Al 0 .05 ) O 2 Microspheres for Lithium Ion Batteries
Author(s) -
Wenlong Liu,
Weiwei Jiang,
Chenran Yan,
Wei Feng,
Dongxia Wang,
Liming Zhao,
Tingting Feng,
Feng Gong
Publication year - 2017
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.11279
Subject(s) - hydrothermal circulation , hydroxide , cathode , calcination , materials science , hydrothermal synthesis , scanning electron microscope , lithium (medication) , lithium hydroxide , analytical chemistry (journal) , chemical engineering , nanotechnology , ion , mineralogy , inorganic chemistry , chemistry , catalysis , composite material , medicine , biochemistry , organic chemistry , chromatography , ion exchange , engineering , endocrinology
Li(Ni 0. 8 Co 0 . 15 Al 0 .05 ) O 2 ( NCA ) cathode material for lithium ion batteries is synthesized by calcining Ni–Co–Al hydroxide or carbonate hydroxide hydrate precursor, which is obtained by hydrothermal method, and the NCA cathode material is hierarchical hollow microspheres with the diameter in the range of 3–5 µm and composed of nanoflakes and/or nanowires. The effect of hydrothermal reaction time on the morphologies and the crystalline quality of the NCA cathode material is investigated on the basis of scanning electron microscopy, X‐ray diffraction, and tunneling electron microscopy. The NCA cathode material shows smooth and monotonous charge/discharge characteristics, delivers a reversible capacity as 144.4 mAh/g and retains 90.4% after 50 cycles at a current density of 0.1 C between 2.5 and 4.3 V.