Abstract
For electrochemical capacitor, the specific capacitance in positive is not equal to negative because of different sizes between cation and anion such as TEABF4/PC. In stacked-type of electrochemical capacitor, the optimized stacked-type cell generates gas 25% lower than current stacked-type cell. Our results show that H2 gas emitted from current stacked-type is twice that from optimized stacked-type; the proportion of CO in current stacked-type is similar to optimized stacked-type, while that of CO2 in optimized stacked-type is 73% of that in current stacked-type. The working voltages of the current stacked-type capacitor and optimized stacked-type are expected to be around 3.3V and below 3.0V, respectively, because the amount of gas emissions from optimized stacked-type is estimated to be 30% less than that from current stacked-type. And higher reliability is shown in optimized stacked-type with alkali activated carbon in positive and steam activation carbon in negative. The generated gas volume by optimized stacked-type with different carbon is decreased around 50% than current stacked-type electrochemical capacitor.
| Original language | English |
|---|---|
| Pages (from-to) | 1123-1132 |
| Number of pages | 10 |
| Journal | Metals and Materials International |
| Volume | 21 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2015 Nov 1 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry
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Effect of electrode balance on performance degradation and gas emission in stacked-type electrochemical capacitors. / Kim, Yu Tack; Kim, Kwang Bum; Jin, Chang Soo; Yoo, Eo Hyun.
In: Metals and Materials International, Vol. 21, No. 6, 01.11.2015, p. 1123-1132.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effect of electrode balance on performance degradation and gas emission in stacked-type electrochemical capacitors
AU - Kim, Yu Tack
AU - Kim, Kwang Bum
AU - Jin, Chang Soo
AU - Yoo, Eo Hyun
PY - 2015/11/1
Y1 - 2015/11/1
N2 - For electrochemical capacitor, the specific capacitance in positive is not equal to negative because of different sizes between cation and anion such as TEABF4/PC. In stacked-type of electrochemical capacitor, the optimized stacked-type cell generates gas 25% lower than current stacked-type cell. Our results show that H2 gas emitted from current stacked-type is twice that from optimized stacked-type; the proportion of CO in current stacked-type is similar to optimized stacked-type, while that of CO2 in optimized stacked-type is 73% of that in current stacked-type. The working voltages of the current stacked-type capacitor and optimized stacked-type are expected to be around 3.3V and below 3.0V, respectively, because the amount of gas emissions from optimized stacked-type is estimated to be 30% less than that from current stacked-type. And higher reliability is shown in optimized stacked-type with alkali activated carbon in positive and steam activation carbon in negative. The generated gas volume by optimized stacked-type with different carbon is decreased around 50% than current stacked-type electrochemical capacitor.
AB - For electrochemical capacitor, the specific capacitance in positive is not equal to negative because of different sizes between cation and anion such as TEABF4/PC. In stacked-type of electrochemical capacitor, the optimized stacked-type cell generates gas 25% lower than current stacked-type cell. Our results show that H2 gas emitted from current stacked-type is twice that from optimized stacked-type; the proportion of CO in current stacked-type is similar to optimized stacked-type, while that of CO2 in optimized stacked-type is 73% of that in current stacked-type. The working voltages of the current stacked-type capacitor and optimized stacked-type are expected to be around 3.3V and below 3.0V, respectively, because the amount of gas emissions from optimized stacked-type is estimated to be 30% less than that from current stacked-type. And higher reliability is shown in optimized stacked-type with alkali activated carbon in positive and steam activation carbon in negative. The generated gas volume by optimized stacked-type with different carbon is decreased around 50% than current stacked-type electrochemical capacitor.
UR - http://www.scopus.com/inward/record.url?scp=84945247437&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84945247437&partnerID=8YFLogxK
U2 - 10.1007/s12540-015-5474-7
DO - 10.1007/s12540-015-5474-7
M3 - Article
VL - 21
SP - 1123
EP - 1132
JO - Metals and Materials International
JF - Metals and Materials International
SN - 1598-9623
IS - 6
ER -