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Tufts Lithium-ion Thin Film Rechargeable Battery
Cu
Substrate
C
Li Co O2
Li xC6
Li+
1-x Co4+
x Co3+
1-x O2
negative electrode ( anode)
Current collector
ionic conductor
Positive electrode(cathode)
Lipon
Current collectorAl/TiN
click to charge
Li+
Li+
e-
e-
e-
Li+
e-
Li+
e-
Li+
Li+
e-
Cu
Substrate
C
Li Co O2
Li xC6
Li+
1-x Co4+
x Co3+
1-x O2
Li+
e-
e-
Li+
e-
Li+e
-
Li+
e-
Li+
e-
Li+
e-
Li+
negative electrode ( anode)
Current collector
ionic conductor
Positive electrode(cathode)
Lipon
Current collectorAl/TiN
click to charge
Cu
Substrate
Li xC6
Li+
1-x Co4+
x Co3+
1-x O2
C
Li CoO2
Li+
e-
e-
Li+
e-
Li+e
-
Li+
e-
Li+
e-
Li+
e-
Li+
negative electrode ( anode)
Current collector
ionic conductor
Positive electrode(cathode)
Lipon
Current collectorAl/TiN
click to discharge
MM
change of energy level during charging
current collector
current collector
positive electrode
negative electrode
Ec
Ec
electrolyte
Ev
Ev
e-
Li+
EF
EF
EF EF
e-
Li+
EFEF
e-
Li+
EF
EF
Li+
EF
EF
e-
e-
Li+
EF EF
change of energy level during discharging
current collector
current collector
positive electrode
negative electrode
Ec
Ec
electrolyte
Ev
Ev
EF
EF
EF EF
e-
Li+
EFEF
e-
Li+
EF
EF
e-
Li+
M
Li+
EF
EF
e-
M
e-
Li+
EF
EF
LiCoO2
Li0..5Co O2
Li0..01Co O2
Li0.01 C6
Li6 C6
Li
2.5eV
1.5eV
3.8-3.9eV
4.2eV 5eV
PE for electron
Positive electrode Li+Co3+ O2 -x Li+ - x e- = Li+
1-xCo4+x Co3+
1-x O2
Negative electrode C6 +x Li+ + x e- = Lix C6
If Li Co O2 area is 1cm2, thickness is 200nm, density is 3.5g/cm3,
if on charging, Li Co O2 is half delithiated.
Li+Co3+ O2 –0.5 Li+ - 0.5 e- = Li+0.5Co4+
0.5Co3+0.5 O2
The charge of 34mC is needed to be transported .
If charging current is set at 100 A . it will take 56 minutes to charge this cell.
potentiostat & galvanostat
Li Cl O4
Li Co O2
Al/Cu
Li
(3 phenylene+C), In, Al,
LiMO2, ( M= Li, Ni, V, Mn)
Lipon (N::Li3PO4 ) , Li3PO4
cathode
electrolyte
anode Li, Pt, Ni, Cu , TiN
LiI doped Li2 S - SiS2 LiI doped Li2 S - B2S2 Li3PO4 doped Li2 S - SiS2
Li2O modified SiO2 (or B2O3, P2 O5)
Li1+xMxTi2-x(PO4)3 (M=Al, Sc, Y, La)
LiI, Li3N Crystalline material
Glassy material
Li4Ti5 O12
Li [M2 ]O4( M= Li, Ni, V, Mn)
LixTiS2
Li+ O- P
O- O- O-
P P P O-OO O
O O O O
O-
Li+
Li+ Li+ Li+ Li+
Li+ O- P
O- O- O-
P P O -ON
N N
O OO-
Li+
Li+ Li+ Li+
P
O
O-
Li+
Li+
Li+ O- P O-
P P PO OO
O O O
O-
Li+
Li+
Li+
Li+Li+
O- O-
Li+ O- P
O- O- O-
P P O-
NN
O O O
Li+
Li+ Li+ Li+
Li+ O- P PO
O O
Li+O-
