Chemistry Reference
In-Depth Information
Table14.2
N-typeredoxactiveradicalpolymers
E
n
f
Solubility
b
Polymer
Monomer
Oxidation
M
n
Theoretical Charge
Ref.
and
(M
w
/
M
n
)
(V vs.
capacity
capacity
Li/Li
+
)
a
Q(mAh/g)
c
(mAh/g)
polymn type
n
8
styrene
radical
(AIBN)
(C
4
H
9
)
4
NF
Ag
2
O
36,000
(1.4)
2.00
insoluble
104
-
34
CF
3
N
O
n
42
a
9
styrene
radical
(AIBN)
-
13000 (1.2) 3.15
soluble
51
36
O
O
•
n
50
b
(2.15)
91
b
(82) 35
10
styrene
radical
(AIBN)
(C
4
H
9
)
4
NF
MnO
2
52,000
(3.2)
3
.
insoluble
103
O
•
O
N
N
a
crosslinked with 10 mol%tetraethyleneglycol diacrylate.
b
Formal potential and charge capacity for p-type redox of nitronylnitroxide.
e
-
e
-
e
-
e
-
Charging
(+)
(-)
(+)
(-)
-
+
-
+
NO
+
PhO
-
PhO
•
NO
•
+
NO
+
PhO
•
-
PhO
-
NO
•
-
+
NO
+
-
PhO
•
PhO
-
+
NO
•
+
NO
+
-
+
+
PhO
•
NO
•
PhO
-
-
-
p-type polymer
n-type polymer
p-type polymer
n-type polymer
(a)
(b)
Figure 14.8
(a) Charging and discharging mechanism of a ''totally organic-based radical battery'' composed
of polymer
5
cathode and
9
anode (Type I). (b) A see-through paper-like battery; blue in the charged state
(galvinolate anion) and light-yellow in the discharged state (galvinoxyl). A full-colour version of part (b) of this
figureappearsintheColourPlatesection of this topic.
exhibited strikingly high current capability, allowing rapid charging within 10 seconds and large discharge
currents (360 C). This totally polymer-based “radical battery” offers flexible device formability, enabling
thin and paper-like batteries. More excitingly, a see-through flexible battery was also fabricated with the
polymer
5
cathode and
9
anode, in which the blue color in the charged state resulting from the galvinolate
anion reverted dramatically to a light-yellow color of the galvinoxyl radical in the discharged state (the color
change accompanied by the redox reaction can be used as the indicator of the charging level, Figure 14.8b).
Search WWH ::
Custom Search