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High‐Performance LiNi 0.5 Mn 1.5 O 4 Spinel Controlled by Mn 3+ Concentration and Site Disorder
Author(s) -
Xiao Jie,
Chen Xilin,
Sushko Peter V.,
Sushko Maria L.,
Kovarik Libor,
Feng Jijun,
Deng Zhiqun,
Zheng Jianming,
Graff Gordon L.,
Nie Zimin,
Choi Daiwon,
Liu Jun,
Zhang JiGuang,
Whittingham M. Stanley
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104767
Subject(s) - spinel , materials science , lattice (music) , ion , manganese , analytical chemistry (journal) , physics , chemistry , metallurgy , chromatography , quantum mechanics , acoustics
The complex correlation between Mn 3+ ions and the disordered phase in the lattice structure of high voltage spinel , and its effect on the charge transport properties, are revealed through a combination of experimental study and computer simulations. Superior cycling stability is achieved in LiNi 0.45 Cr 0.05 Mn 1.5 O 4 with carefully controlled Mn 3+ concentration. At 250th cycle, capacity retention is 99.6% along with excellent rate capabilities.