Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Ionic-liquid (IL) electrolytes, characterized by large potential windows, intrinsic ionic conductivity, low environmental hazard, and high safety, are used for micropore- and mesopore-rich activated-carbon (AC and AC ) supercapacitors. IL electrolytes consisting of various cations [1-ethyl-3-methylimidazolium (EMI ), N-propyl-N-methylpyrrolidinium (PMP ), and N-butyl-N-methylpyrrolidinium (BMP )] and various anions [bis(trifluoromethylsulfonyl)imide (TFSI ), BF , and bis(fluorosulfonyl)imide (FSI )] are investigated. The electrolyte conductivity, viscosity, and ion transport properties at the AC and AC electrodes are studied. In addition, the capacitance, rate capability, and cycling stability of the two types of AC electrodes are systematically examined and post-mortem material analyses are conducted. The effects of IL composition on the charge-discharge capacitances of the AC electrodes are more pronounced than those for the AC electrodes. The FSI-based IL electrolytes, for which electrochemical properties are cation dependent, are found to be promising. Incorporating EMI with FSI results in a low electrolyte viscosity and a fast ion transport, giving rise to optimized electrode capacitance and rate capability. Replacing EMI with PMP increases the cell voltage (to 3.5 V) and maximum energy density (to 42 Wh kg ) of the AC cell at the cost of cycling stability.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/cssc.201802489 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fabrication of mesopore-rich HZSM-5 to boost the degradation of plastic wastes.
Phys Chem Chem Phys
December 2023
College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin, Heilongjiang, PR China.
Plastic waste is causing serious environment pollution and its efficient disposal is attracting more and more attention. The use of catalysts not only reduced the degradation temperature of plastic wastes but also facilitated the production of valuable chemicals. Herein, mesopores were introduced into HZSM-5 zeolites by alkali and acid treatment, which was expected to eliminate the diffusion resistance caused by bulky polymer molecules and improve the catalytic activity.
View Article and Find Full Text PDFAdsorption of fulvic acid on mesopore-rich activated carbon with high surface area.
Sci Total Environ
September 2022
Department of Environmental Science, Zhejiang University, Hangzhou 310058, China; Zhejiang University-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311200, China; Key Laboratory of Environmental Pollution and Ecological Health of Ministry of Education, Hangzhou 310058, Chi
The loss of dissolved organic matter (DOM), especially fulvic acid (FA), from soil by rainfall and runoff will reduce soil fertility and result in water pollution of DOM. Carbon materials including biochars (BCs) and activated carbons (ACs) are widely suggested for soil remediation and carbon immobilization. However, these suggested carbon materials are dominated by micropores, and largely limiting the adsorption capacity for FA.
View Article and Find Full Text PDFBamboo-Based Mesoporous Activated Carbon for High-Power-Density Electric Double-Layer Capacitors.
Nanomaterials (Basel)
October 2021
Department of Nano & Advanced Materials Engineering, Jeonju University, Jeonju 55069, Korea.
Demand for hybrid energy storage systems is growing, but electric double-layer capacitors (EDLCs) have insufficient output characteristics because of the microporous structure of the activated carbon electrode material. Commercially, activated carbon is prepared from coconut shells, which yield an activated carbon material (YP-50F) rich in micropores, whereas mesopores are desired in EDLCs. In this study, we prepared mesoporous activated carbon (PB-AC) using a readily available, environmentally friendly resource: bamboo.
View Article and Find Full Text PDFA functionalized bio-based material with abundant mesopores and catechol groups for efficient removal of boron.
Chemosphere
January 2021
School of Material Science and Engineering, University of Jinan, Jinan, 250022, China. Electronic address:
Pursuing a low-cost yet sustainable material with a high performance of removing boron is necessary for replacement of the synthetic adsorbents, but remains challengeable. Herein, we fabricated an mesopore-dominated bio-based material (LS-CPAM-TA) with abundant catechol groups by the electrostatic-interaction-driven self-assembly of lignosulfonate (LS), tannic acid (TA) and cationic polyacrylamide (CPAM) for efficient removal of boron. LS-CPAM-TA presented a mesopore area of 53.
View Article and Find Full Text PDFFacile synthesis of hierarchical mesopore-rich activated carbon with excellent capacitive performance.
J Colloid Interface Sci
June 2019
Institute of Coal Chemistry, Chinese Academy of Sciences, 27 Taoyuan South Road, Taiyuan 030001, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 010049, China. Electronic address:
Mesoporous carbons attract increasing attention owing to their potential applications in supercapacitors. So far, controlled synthesis of mesoporous carbons with a narrow pore size distribution relies largely on the complicated template methods. To avoid the use of templates, a surfactant-free emulsion polymerization method is presented for the fabrication of a melamine-modified phenolic resin microrod (MPRR) assembled by micron-sized spherical cells and thin walls.
View Article and Find Full Text PDF