Material chemical engineering experiment Wpaper
Material chemical engineering department@12512017@Moeno Kido
TDEvaluation of the performance of each CMC
Z The weight of each CMC sample which it was measured in an even balance and took and weight of the use reagent
CMC1190 0.006g
CMC1220 0.005g
CMC2200 0.007g
Ion-exchanged water10 dropiAbout0.5gj
CNT 0.01g
SBR 1 drop(0.02gj
Z Making of the anode
iWay of the makingj
Z Observation and result of the coating
After observing a state when I made coating to aluminum using the CMC mentioned above,
viscosity characteristics were strong and felt CMC2200 in three when it seemed to be easy to be possible for an irregularity to paint when I did coating with a writing brush.
Because CMC1190 is weak viscosity resistance than CMC2200, I felt that it is easy likely coating difficult can it painted plaques in the sample of the three of the CMC.
Viscosity characteristics were weak and it was easy to paint like watercolors, but it was hard to paint with the side of aluminum and felt CMC1220 in three samples most.
However, I felt that there might be hard to be the coating spot.
Z Consideration
Because CMC2200 is ease likely can paint spots, it was considered to be not as good as the performance of the battery when it is used as the contents of the battery.
CMC1190 was good compared to three of CMC of the two CMC also difficult and coating ease that can best painted plaques of others in the sample.
Therefore, I thought that the good performance of as most batteries in the sample of three of the CMC.
But, because it is not possible to apply to the side, it was considered could drop the performance of the battery.
Z Measurement
Was applied to the aluminum CMC1220 create a battery-powered cell below, were measured capacitance.
Al|CMC1220,
CNT,
SBR
|5wt%AA
|SuS
Similarly, CMC2200 that was applied to the aluminum to create a battery-powered cell below, were measured capacitance.
Al|CMC2200,
CNT,
SBR
|5wt%AA
|SuS
Z Result
The quantity of coating of the CMC1220 was 0.004 grams.
As a result of calculation derived from the static induction per gram carbon, the maximum value was 9.27 V/s.
Was confirmed the status of the positive electrode cell when it is measured, there was no change. There was no occurrence of bubbles.
The quantity of coating of the CMC2200 was 0.0213g.
Al|CMC1220,
CNT,
SBR
|5wt%AA
|SuS
The electrostatic induction was -370ÊF.
The capacity of the capacitor of CMC1190 was at least 51.0mV,
a -135.0 microampere, a maximum of 996.0mV, 134 microamperes.
CMC2200
The capacity of the capacitor of CMC2200 was at least 46.1mV,
a -156.0 microampere, a maximum of 231.0mV, 951 microamperes.
After confirming the state of the anode cell when I measured, air bubbles were generated.
Z Consideration
When I make it as a battery, in CMC2200 which air bubbles produced, it is thought that it is not high-performance as a battery.
In addition, it can be thought that there is the risk that air bubbles collect during the use of the battery and explode when air bubbles are generated.
UDMeasurements of the voltammogram of surface treated aluminum
Z Adjustment of the AA of 0.3M
At first I coordinated AAaq of 0.3M. I cut aluminum foil performed surface treatment of to length, size of 7cm in width.
In aluminum foil C, in C foil, aluminum foil D, D foil, aluminum foil E specify E foil, aluminum foil F with F foil from the following.
Z Making of the cell
Following in an anode cell; made it as coming to a battery-type.
Al|0.3MNH4OOC(CH2)4COONH4aq|Pt
Z The measurement by the LCR meter
After having made the cell such as the following battery type, with each aluminum foil performed surface treatment of,
in the case of -1.5 - +-5V, sweep 100mV in speed, 120Hz, in the case of 220Hz,
I measured it as measurement condition with LCR meter. In addition, I performed the cause measurement of the measurement condition of 500Vp-p.
Al|0.3M AA|SuS
Z Result
After, in the case of 500Vp-p, -1.5 - +-5V, sweep 100mV in speed, 120Hz, performing the cause measurement of the measurement condition in case of 220Hz,
In the case of C foil, OCV is -33mV, a maximum of 30mA
In the case of D foil, OCV is -38.0mV, a maximum of 39mA, at least -3.1mA
In the case of E foil, OCV is -19.1mV, a maximum of 23.1mA, at least -2.0mA
As a result of having measured with LCR meter,
In the case of 120Hz
C foilF14.46ÊFA513mV
D foilF17.72ÊFA503mVAÆ=-75.35
E foilFÆ=-71.2
F foilF28.36ÊFA500mVAÆ=-73.56
In the case of 220Hz
C foilF14.26ÊFA434mV
DfoilF14.27ÊFA503mVAÆ=-73.6
EfoilF16.71ÊFA500mVAÆ=-63.5
F foilF28.30ÊFA503mVAÆ=-65.25
VDAlkali removal of fat of the aluminum foil of the surface treatment finished
Z Alkaline degreasing
I performed alkali removal of fat to ion exchanged water to nitric acid of 1M to ion exchanged water in a sodium hydroxide water solution of 1M in order of 10s for 30s for 10s for 60s.
Z The measurement by the LCR meter
I measured it using aluminum foil B which performed 220Hz, 500mV,
aluminum foil B of the surface treatment finished which did not perform alkali removal of fat at bias +2V and alkali removal of fat as measurement condition.
Z Result
The B foil which did not perform alkali removal of fat
Electrostatic capacityF28.11ÊF
Electrical resistanceF57.93¶
ImpedanceF29.93Q
Æ=-58.91deg
iBut it is the result that I add bias and do not measurej
The B foil which performed alkali removal of fat
Electrostatic capacityF5.224ÊF
Electrical resistanceF35.51¶
ImpedanceF23.08Q
Æ=-49.26deg
Z Consideration
I know that there is a big difference by appearance when I compare the capacitance when I do not go when I perform alkali removal of fat.
Because alkali removed fat as for this, I thought that I understood that aluminum oxide which attached to the surface of aluminum foil performed
surface treatment of was trimmed from this laboratory finding.