1.4 The Li–Mn–Ni–O Face of the Pyramid
13
Fig. 1.10 TEM images of Li 1.2 Ni 0.2 Mn 0.6 O 2 . (a Reprinted from Jarvis et al., Ref. [46], with
permission from the American Chemical Society. b Reprinted from Lei et al., Ref. [44], with
permission from Elsevier)
Fig. 1.11 TEM images of
single-phase Li 2 MnO 3
showing ordered domains
with stacking faults, one of
which is indicated by the
white arrow. (Reprinted from
Ref. [47] with permission
from Springer)
The phase diagrams obtained here offer significant insight into the compositions at
which layered–layered phase separation might occur and under which conditions.
This work, therefore, helps resolve this issue VI.
Recent work, again on the lithium-rich layered oxide Li 1.2 Ni 0.2 Mn 0.6 O 2 , has suggested that as much as 25 % of the manganese is in the 3 + oxidation state based
primarily on the fact that the magnetic moment was lower than that expected if all
manganese is in the 4 + state [48]. This result is unexpected since research shows
that manganese is typically synthesized in the 4 + state in the lithium-rich layered
13
Fig. 1.10 TEM images of Li 1.2 Ni 0.2 Mn 0.6 O 2 . (a Reprinted from Jarvis et al., Ref. [46], with
permission from the American Chemical Society. b Reprinted from Lei et al., Ref. [44], with
permission from Elsevier)
Fig. 1.11 TEM images of
single-phase Li 2 MnO 3
showing ordered domains
with stacking faults, one of
which is indicated by the
white arrow. (Reprinted from
Ref. [47] with permission
from Springer)
The phase diagrams obtained here offer significant insight into the compositions at
which layered–layered phase separation might occur and under which conditions.
This work, therefore, helps resolve this issue VI.
Recent work, again on the lithium-rich layered oxide Li 1.2 Ni 0.2 Mn 0.6 O 2 , has suggested that as much as 25 % of the manganese is in the 3 + oxidation state based
primarily on the fact that the magnetic moment was lower than that expected if all
manganese is in the 4 + state [48]. This result is unexpected since research shows
that manganese is typically synthesized in the 4 + state in the lithium-rich layered