Article
Polymer Science
Ying Wei, Wei Chen, Xinyi Ge, Jiayi Liang, Zheng Xing, Qingguo Zhang, Zhong-Xia Wang
Summary: This article introduces a method of preparing free-standing ionogels through double-additive induced physical cross-linking. The ionogels prepared using this method have excellent mechanical and electrochemical properties, making them suitable for applications in flexible electronic devices and wearable electronic skin.
Article
Energy & Fuels
A. D. T. Medagedara, N. M. Waduge, T. M. W. J. Bandara, I. G. K. J. Wimalasena, M. Dissanayake, K. Tennakone, R. M. G. Rajapakse, C. P. Rupasinghe, G. R. A. Kumara
Summary: Organic solvents are commonly used in supercapacitors as electrolytes, but their drawbacks include high volatility, toxicity, and environmental issues. In this study, a novel and low-cost ionic liquid based on triethylammonium cation and thiocyanate anion was synthesized and used as the electrolyte in a low-cost supercapacitor. The electrode material used was electronically conducting activated carbon derived from cleaned coconut shells. The temperature dependence of electrolyte conductivity was investigated, and the ion transport kinetics behaved according to the Vogel-Tammann-Fulcher (VTF) model. The optimized electrode fabrication method resulted in the highest specific capacitance in the supercapacitor assembly.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Electrochemistry
M. Paalo, M. Harmas, T. Romann, A. Janes, E. Lus
Summary: The ZnCl2 activation method was used to synthesize micro- and mesoporous carbon material from Estonian well decomposed peat. With the activation step, the synthesized material showed an increased SBET value of 1270 m2 g1 compared to 270 m2 g1 without activation. The material exhibited potential for stationary electricity storage in local small-scale wind farms and PV electricity generating fields, with high energy densities and moderate power densities achievable.
ELECTROCHEMISTRY COMMUNICATIONS
(2023)
Article
Electrochemistry
Dawid Kasprzak, Maciej Galinski
Summary: This study introduces a novel nonaqueous biopolymer-based gel electrolyte containing an ionic liquid for high-voltage electrochemical capacitors. The gel electrolyte exhibits high specific capacitance, energy-power densities, and excellent cyclability, making it a promising eco-friendly material for high-performance supercapacitors.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Xinping He, Tianyi Zhuang, Shuai Ruan, Xinhui Xia, Yang Xia, Jun Zhang, Hui Huang, Yongping Gan, Wenkui Zhang
Summary: This article introduces a novel anti-freezing electrolyte, which is based on poly(ionic liquid) hydrogel. It has high conductivity and good anti-freezing performance. The assembled symmetrical supercapacitor shows excellent electrochemical properties.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Ganesh Dhakal, Debananda Mohapatra, Young-Il Kim, Jintae Lee, Woo Kyoung Kim, Jae-Jin Shim
Summary: Three-dimensional lotus calyx-derived activated carbon (3D-LCAC), prepared by one-step carbonization and activation, shows remarkable electrochemical performance and high cycling stability in supercapacitor applications, making it a promising candidate as a high-performance electrode material.
Article
Engineering, Environmental
Seung Jae Moon, Hyo Jun Min, Chang Soo Lee, Du Ru Kang, Jong Hak Kim
Summary: A solid-state electrolyte film with high ionic conductivity, flexibility, and self-adhesive properties was developed based on a fluorinated, microphase-separated comb copolymer. The film showed excellent performance in solid supercapacitors, outperforming conventional electrolytes. This innovative electrolyte film eliminates the need for separators, adhesives, or packaging processes in supercapacitor fabrication.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Sai Ma, Xiaoli Xu, Wenjun Wu
Summary: This research successfully broadened the operating window and boosted the specific capacitance of supercapacitors by introducing ionic liquid and dimethylsulfoxide into a polyvinyl alcohol gel. Additionally, using activated carbon as electrodes and bendable copper foil as current collectors further increased the energy density and power density of the supercapacitor.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Yuhua Zhao, Yujuan Chen, Quanzhou Du, Kelei Zhuo, Lifang Yang, Dong Sun, Guangyue Bai
Summary: This study investigates the relationship between the pore size of porous carbon electrode materials and the ion size and shape of ionic liquids, showing potential for improving the capacitive performance of supercapacitors. Matching different IL mixtures with carbon-based electrode materials of specific pore size distributions could offer a new strategy to enhance supercapacitor performance.
Article
Chemistry, Multidisciplinary
Fuming Zhang, Xiangshang Xiao, Dayakar Gandla, Zhaoxi Liu, Daniel Q. Tan, Yair Ein-Eli
Summary: A hollow-fiber hierarchical porous carbon with ultra-high specific surface area was synthesized using a facile carbonization and activation method. The carbon material showed excellent capacitance and cycle life in an alkaline electrolyte. The performance was optimized by tailoring the hierarchical porous carbon structure and the ion size of the electrolyte.
Article
Chemistry, Physical
Abbas Ali Hor, Neetu Yadav, S. A. Hashmi
Summary: Introducing redox-active species into the electrolyte component allows for additional pseudocapacitive redox activities at the electrode-electrolyte interfaces, improving the energy density of carbon supercapacitors. In this study, a quasisolid-state supercapacitor was developed using activated carbon electrodes and a redox-active gel polymer electrolyte (R-GPE) incorporated with an ionic liquid and a redox-additive IL, entrapped in a polymer matrix. The R-GPE showed excellent mechanical stability, wide thermal stability range, and high electrochemical properties, making it a promising substitute for liquid electrolytes in supercapacitors. The quasisolid-state supercapacitor demonstrated enhanced specific capacitance, specific energy, and maximum power due to the redox activities at the interfaces. It also exhibited good cycling performance with minimal fading in specific capacitance and high Coulombic efficiency.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Energy & Fuels
Petr M. Yeletsky, Marina Lebedeva, Vadim A. Yakovlev
Summary: This review article focuses on the recent advances in the development of biomass-derived activated carbons and their application as electrode materials for electric double layer capacitors (EDLCs). The article discusses various approaches to production of activated carbons from biomass and highlights their performance as materials for EDLCs. The requirements and synthesis approaches to achieve EDLCs with high energy accumulation characteristics are also formulated.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Electrical & Electronic
Subhrajit Konwar, Pramod K. Singh, Pawan Dhapola, Abhimanyu Singh, Serguei V. Savilov, Muhd Zu Azhan Yahya, Sirin Siyahjani Gultekin, Burak Gultekin
Summary: This paper deals with the synthesis, characterization, and application of low-viscosity ionic liquids as dopants and biopolymers as the host. The ionic liquid enhances the ionic conductivity and thermal stability of the biopolymer electrolyte, leading to the development of highly conducting ionic-liquid-doped biopolymer electrolyte-based devices such as electrochemical double-layer capacitors and dye-sensitized solar cells.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Tao Liu, Zhipeng He, Huichao Liu, Jinglong Yang, Shuo Zhang, Jiali Yu, Muwei Ji, Caizhen Zhu, Jian Xu
Summary: This study successfully fabricated high-performance heat-resistant solid-state supercapacitors for flexible and wearable electronics, based on PPTA fibers and composite fibers with excellent electrochemical performance, mechanical strength, and durability, meeting the requirements of flexibility and wearability for electronic devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Mazharul Haque, Qi Li, Cristina Rigato, Azega Rajaras, Anderson D. Smith, Per Lundgren, Peter Enoksson
Summary: Ionic liquids show potential as electrolytes for supercapacitors in high-temperature applications, but also lead to accelerated self-discharge rates. At elevated temperatures, diffusion control dominates the self-discharge behavior, while at room temperature both charge redistribution and diffusion play significant roles.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Multidisciplinary
Junhua Jiang, Lei Zhang
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2015)
Article
Materials Science, Multidisciplinary
Junhua Jiang, Nancy Holm, Kevin O'Brien
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2015)
Article
Chemistry, Physical
Matthew Genovese, Junhua Jiang, Keryn Lian, Nancy Holm
JOURNAL OF MATERIALS CHEMISTRY A
(2015)
Article
Chemistry, Analytical
Junhua Jiang, Xinying Wang, Lei Zhang
Article
Electrochemistry
Junhua Jiang, Lei Zhang, Xinying Wang, Nancy Holm, Kishore Rajagopalan, Fanglin Chen, Shuguo Ma
ELECTROCHIMICA ACTA
(2013)
Article
Electrochemistry
Lei Zhang, Junhua Jiang, Nancy Holm, Fangling Chen
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2014)
Article
Electrochemistry
Junhua Jiang, Lei Zhang, Vinay Shanbhag
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2014)
Article
Electrochemistry
Junhua Jiang, John Scott, Xinhuai Ye
ECS ELECTROCHEMISTRY LETTERS
(2013)
Review
Biotechnology & Applied Microbiology
Xiaoyu Wu, Junhua Jiang, Chongmin Wang, Jian Liu, Yunqiao Pu, Arthur Ragauskas, Songmei Li, Bin Yang
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2020)
Review
Electrochemistry
Junhua Jiang, Congjian Wang
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
Article
Electrochemistry
Junhua Jiang
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
Article
Electrochemistry
Junhua Jiang
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)
Article
Chemistry, Analytical
Junhua Jiang, Lei Zhang
Article
Electrochemistry
Junhua Jiang
ELECTROCHEMISTRY COMMUNICATIONS
(2017)