ni-mh電池 充放電挙動変化のメカニズム解析mah] [研究目的] 低い soc...
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0.00.51.01.5
0.0 1.0 2.0 3.0 4.0|(
R)|
[-3
]
[]
Ni-MH
2018.3.23
Primearth EV Energy Co., Ltd.
, , , , , EV
-NiOOH
EXAFS
1.20
1.30
1.40
1.50
1.60
0 100 200 300 400 500 600
[V]
[mAh]
[] SOC -NiOOH
-NiOOH
[1] [1] Y. Sato et al., J. Power Sources., 2001, 93, 20-
XRD XAFS
SOC : 0-40%, 20-60% 40-80%, 60-100% : 55 : 5C 2500Ah 6000Ah(0-40%)
0.6889 600s (=0.2mm)
1.20
1.25
1.30
1.35
1.40
1.45
1.50
1.55
0 100 200 300 400 500 600
[V]
[mAh]
(Voltage) / Wh
V
SOC0-40% SOC20-60%
SOC40-80% SOC60-100%
0 10 20 30 40 50 60
/
a.u
.
2 / deg.
-NiOOH 003 006
SOC0%
SOC0-40% SOC0%
SOC0-40% SOC40%
SOC0-40% SOC60%
-NiOOH
R = 0.9963
0
2
4
6
8
10
12
14
16
0.30 0.35 0.40 0.45 0.50
[Wh]
-Ni(OH)2(101) [deg.]
-Ni(OH)2
-Ni(OH)2 101
-Ni(OH)2(101) C.Delmas(101)[2]
H
[2] C. Delmas, C. Tessier, J. Mater. Chem., 1997, 7, 1439-
Ni-H
O Ni
H
O Ni
[3] M. Morishita, et al., Electrochemistry, 2008, 76, 802-
Ideal Fault O Ni
H
Fault
Rwp=4.793, Rp=3.736
Fault 23.1%
Ideal 76.9%
Rwp = 4.516, Rp=3.363
Fault 2.8%
Ideal 97.2%
SOC0-40%
(SOC0-40%) Fault
0.000
0.010
0.020
0% 20% 40% 60%DW
[
]
SOC [%]
0.00.51.01.5
0.0 1.0 2.0 3.0 4.0|(
R)|
[-3
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[]
SOC0% SOC20% SOC40% SOC60%
SOC0% SOC20% SOC40% SOC60%
Ni-Ni DW
(SOC0-40%) DW
SOC0-40%
Ni-Ni DW
Ni-Ni Ni-O Ni-O Ni-Ni
(101)
-Ni(OH)2 EXAFSDW
1