Knowledge Management System Of Institute of process engineering,CAS
| Dominant role of wettability in improving the specific capacitance | |
| Liu, Tongtong1,2; Wang, Kai1,2; Chen, Yongxiu1,2; Zhao, Shuangliang3,4; Han, Yongsheng1,2 | |
| 2019-04-01 | |
| Source Publication | GREEN ENERGY & ENVIRONMENT
 |
| ISSN | 2096-2797 |
| Volume | 4Issue:2Pages:171-179 |
| Abstract | Here we report a strategy to enhance the energy density of supercapacitors by increasing the utilization rate of the specific surface area (SSA) via wettability improvement. The nonporous gold (NPG) film is used as the electrodes and the ionic liquid [EMIM]BF4 is the electrolyte. When the electrode is coated by paraffin, an increase of the contact angle leads to a remarkable reduction of the specific capacitance. While when acetonitrile is added into the electrolyte, the contact angle is decreased and the utilization rate of SSA is improved, which results in an increase of the specific capacitance. The addition of isopropyl acetate into the electrolyte leads to a further increase of the specific capacitance. To generalize the role of the wettability in improving the energy density, a carbon-based electrode is evaluated in the solution of potassium hydroxide. An addition of propyl alcohol into the potassium hydroxide solution leads to an increase of the specific capacitance, as well as a long-term stability of the supercapacitor. The role of conductivity in this study is excluded by designing experiments. This paper highlights the significance of wettability in determining the specific capacitance, showing an alternative to improve the energy density of supercapacitors. (C) 2019, Institute of Process Engineering, Chinese Academy of Sciences. Publishing services by Elsevier B.V. |
| Keyword | Supercapacitor Energy density Specific capacitance Effective surface area Wettability |
| DOI | 10.1016/j.gee.2019.01.010 |
| Language | 英语 |
| WOS Keyword | SUPERCAPACITOR ELECTRODE ; SURFACE-AREA ; CARBON MATERIALS ; ENERGY-STORAGE ; PERFORMANCE ; ADSORPTION ; POWER ; NANOSHEETS ; STRATEGY ; OXIDE |
| Funding Project | National Natural Science Foundation of China[91534123] ; National Natural Science Foundation of China[91834303] ; National Natural Science Foundation of China[U1862117] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2017-A-01] ; State key laboratory of Multiphase Complex Systems (MPCS) Facility Upgradation Program |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Energy & Fuels ; Engineering |
| WOS Subject | Chemistry, Physical ; Green & Sustainable Science & Technology ; Energy & Fuels ; Engineering, Chemical |
| Funding Organization | National Natural Science Foundation of China ; State Key Laboratory of Multiphase Complex Systems ; State key laboratory of Multiphase Complex Systems (MPCS) Facility Upgradation Program |
| WOS ID | WOS:000493350600011 |
| Publisher | KEAI PUBLISHING LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/39108 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Han, Yongsheng |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China 4.East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Tongtong,Wang, Kai,Chen, Yongxiu,et al. Dominant role of wettability in improving the specific capacitance[J]. GREEN ENERGY & ENVIRONMENT,2019,4(2):171-179. |
| APA | Liu, Tongtong,Wang, Kai,Chen, Yongxiu,Zhao, Shuangliang,&Han, Yongsheng.(2019).Dominant role of wettability in improving the specific capacitance.GREEN ENERGY & ENVIRONMENT,4(2),171-179. |
| MLA | Liu, Tongtong,et al."Dominant role of wettability in improving the specific capacitance".GREEN ENERGY & ENVIRONMENT 4.2(2019):171-179. |
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