TY - JOUR
T1 - Nanostructured lithium nickel manganese oxides for lithium-ion batteries
AU - Deng, Haixia
AU - Belharouak, Ilias
AU - Cook, Russel E.
AU - Wu, Huiming
AU - Sun, Yang Kook
AU - Amine, Khalil
PY - 2010
Y1 - 2010
N2 - Nanostructured lithium nickel manganese oxides were investigated as advanced positive electrode materials for lithium-ion batteries designated to power plug-in hybrid electric vehicles and all-electric vehicles. The investigation included material characterization and electrochemical testing. In cell tests, the Li1.375 Ni0.25 Mn0.75 O 2.4375 composition achieved high capacity (210 mAh g-1) at an elevated rate (230 mA g-1), which makes this material a promising candidate for high energy density Li-ion batteries, as does its being cobalt-free and uncoated. The material has spherical morphology with nanoprimary particles embedded in micrometer-sized secondary particles, possesses a multiphase character (spinel and layered), and exhibits a high packing density (over 2 g cm-3) that is essential for the design of high energy density positive electrodes. When combined with the Li4 Ti 5 O12 stable anode, the cell showed a capacity of 225 mAh g-1 at the C/3 rate (73 mA g-1) with no capacity fading for 200 cycles. Other chemical compositions, Li(1+x) Ni 0.25 Mn0.75 O(2.25+x/2) (0.32 ≤ x ≤ 0.65), were also studied, and the relationships among their structural, morphological, and electrochemical properties are reported.
AB - Nanostructured lithium nickel manganese oxides were investigated as advanced positive electrode materials for lithium-ion batteries designated to power plug-in hybrid electric vehicles and all-electric vehicles. The investigation included material characterization and electrochemical testing. In cell tests, the Li1.375 Ni0.25 Mn0.75 O 2.4375 composition achieved high capacity (210 mAh g-1) at an elevated rate (230 mA g-1), which makes this material a promising candidate for high energy density Li-ion batteries, as does its being cobalt-free and uncoated. The material has spherical morphology with nanoprimary particles embedded in micrometer-sized secondary particles, possesses a multiphase character (spinel and layered), and exhibits a high packing density (over 2 g cm-3) that is essential for the design of high energy density positive electrodes. When combined with the Li4 Ti 5 O12 stable anode, the cell showed a capacity of 225 mAh g-1 at the C/3 rate (73 mA g-1) with no capacity fading for 200 cycles. Other chemical compositions, Li(1+x) Ni 0.25 Mn0.75 O(2.25+x/2) (0.32 ≤ x ≤ 0.65), were also studied, and the relationships among their structural, morphological, and electrochemical properties are reported.
UR - http://www.scopus.com/inward/record.url?scp=77949739138&partnerID=8YFLogxK
U2 - 10.1149/1.3308598
DO - 10.1149/1.3308598
M3 - Article
AN - SCOPUS:77949739138
SN - 0013-4651
VL - 157
SP - A447-A452
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 4
ER -