2013 Fiscal Year Final Research Report
Development of High Rate Capacitor by Optimizing Electrode Structure
| Project/Area Number |
23360347
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Reaction engineering/Process system
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| Research Institution | Kyoto University |
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Principal Investigator |
KAWASE Motoaki 京都大学, 工学(系)研究科(研究院), 教授 (60231271)
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| Co-Investigator(Kenkyū-buntansha) |
INOUE Gen 京都大学, 工学研究科, 助教 (40336003)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 電気二重層キャパシター / 速度性能 / 構造化電極 / イオン輸送 / イオンパス / モデル / 物質移動抵抗 |
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| Research Abstract |
At the high discharge rate, the diffusion resistance of ion in the through-plane direction of electrode greatly deteriorates the discharge rate of electrochemical double-layer capacitor (EDLC). We produced structured thick electrodes with through-plane microchannel, and investigated the effects of the structured electrodes on the discharge rate. Two types of structured electrodes with through-plane microchannel, multi-cylindrical-channel electrode (MCE) and multi-layered electrode (MLE) were prepared and the specific capacitance per weight of MCE and MLE were measured. Multi-cylindrical-channel and porous layer of MLE function as ion path. The specific capacitance of MCE and MLE was improved from that of a normal electrode in the high discharge rate region.
We also built the model taking into acount mass transfer resistance of ion passing through the pore in the particle and between the particles in order to give the design guideline of EDLC.
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