Article
Electrochemistry
Seden Ezgi Yazar Ayturk, Alime Citak, Elif Can Aydin, Mete Batuhan Durukan
Summary: This study aimed to obtain nanocomposite materials as anode electrodes for supercapacitors using metal oxides, and investigated the electrochemical performances under different reaction conditions. The results showed that the sample prepared under specific reaction conditions had the largest capacitance value and the best charge-discharge performance, indicating its potential application in supercapacitors.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Zecui Gao, Zhixin Wan, Zhengtao Wu, Xueli Huang, Haiqing Li, Teng Fei Zhang, Paul Heinz Mayrhofer, Qimin Wang
Summary: Transition metal nitrides (TMN) have been widely studied as supercapacitor materials with high specific surface area for energy storage applications. In this study, CrN-Ni composite coatings were prepared using arc ion plating with different Ni contents, and post-deposition treatments with HCl solutions were found to significantly enhance the energy storage performance of the coatings. The coating with 54.2% Ni exhibited the highest specific capacitance after treatment, suggesting that the combination of TMNs with metallic Ni and HCl treatment is an effective strategy for improving the specific surface area and performance of TMN thin film supercapacitors.
MATERIALS & DESIGN
(2021)
Article
Chemistry, Multidisciplinary
Meruyert Nazhipkyzy, Mukhtar Yeleuov, Shynggyskhan T. Sultakhan, Anar B. Maltay, Aizhan A. Zhaparova, Dana D. Assylkhanova, Renata R. Nemkayeva
Summary: Activated carbons are widely used in supercapacitors due to their processing advantages, conductivity, and porosity. This study found that activated carbon made from sawdust showed high specific capacitance in charge-discharge tests, even at high scan rates.
Article
Chemistry, Physical
G. T. Chavan, Anuja Yadav, B. Y. Fugare, Nanasaheb M. Shinde, M. S. Tamboli, S. S. Kamble, A. Sikora, J. Warycha, B. J. Lokhande, Seok-Won Kang, Ahyun Kim, Chan-Wook Jeon
Summary: This study explores the potential application of Co1-xCuxS/CoCuS thin films as materials for supercapacitors. The as-deposited thin films were characterized using various techniques. The results demonstrate that the sample-C-3 (x = 0.075) is suitable for energy storage applications, showing excellent supercapacitive performance and cycling stability, which suggests its potential as an alternative for efficient energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Energy & Fuels
Sreelakshmi Rajeevan, Sam John, Deepalekshmi Ponnamma, Soney C. George
Summary: In this study, highly efficient rGO/PVDF composite electrodes were synthesized by tuning the concentration of PVDF as a binder. The composite electrodes exhibited a symmetric elliptical-shaped voltammogram and quasi-triangular-shaped GCD curves, indicating excellent charging-discharging stability. The fabricated symmetric EDLC supercapacitor using the PvG2 electrode showed ideal supercapacitor behavior with high symmetry. The highest power and energy densities were achieved for the supercapacitors, and a high capacitance retention and coulombic efficiency were observed after 5000 cycles.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Fawzi Hadji, Mahmoud Omari, Mourad Mebarki, Noureddine Gabouze, Abdelhamid Layadi
Summary: A series of LaCo1-xZnxO3 perovskite-type oxides (0 <= x <= 0.1) were successfully synthesized via the sol-gel process. The zinc doping significantly improved the electrochemical properties of LaCoO3, with LaCo0.95Zn0.05O3 demonstrating a four-fold increase in specific capacitance compared to the undoped electrode. A hybrid supercapacitor combining LaCo0.95Zn0.05O3 with activated carbon achieved a high energy density of 36.12 Wh.kg-1 and a capacitance retention of 81% after 5000 charge-discharge cycles at 5 A/g.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Qing-Shi Wu, Fahime Bigdeli, Farzaneh Rouhani, Xue-Mei Gao, Hamed Kaviani, Hong-Jing Li, Wei Wang, Kuan-Guan Liu, Mao-Lin Hu, Xiao-Qing Cai, Ali Morsali
Summary: A new type of high-nucleus silver nanopolycluster was designed and synthesized as a silver-based polymer supercapacitor through a simple synthesis process. This highly stable conductive 3D nanopolycluster shows excellent cycling stability and high capacity without the need for modification or doping processes.
INORGANIC CHEMISTRY
(2021)
Article
Energy & Fuels
Atefeh Omidi-Dargahi, Hossein Dehghani, Ali Ehsani
Summary: In this study, the covalently functionalized aromatic-aliphatic amino acids were added to graphene sheets to synthesize NiCo2O4 and blended with functionalized graphene oxide (FGO) as electrochemical electrodes for energy storing applications. The characterization and electrochemical performance evaluation showed that the modified graphene exhibited stable dispersion and the blended material displayed high specific capacitance and exceptional cyclic stability.
JOURNAL OF ENERGY STORAGE
(2024)
Article
Electrochemistry
Fang Xu, Qing Xia, Guoping Du, Zhaoyang Fan, Nan Chen
Summary: Developing a sophisticated material architecture to provide mechanical strength, excellent conductivity, and large surface area for TMPs is a pressing need to improve supercapacitor performance. In this study, coral-like interconnected Ni2P nanoparticles dispersed on porous amorphous carbon matrix were reported, showing superior electrochemical performance.
ELECTROCHIMICA ACTA
(2021)
Article
Energy & Fuels
Ying Wang, Cuili Xiang, Yongjin Zou, Fen Xu, Lixian Sun, Jian Zhang
Summary: This study successfully prepared three-dimensional flower-like ZnCo2S4@PPy composite material with remarkable electrochemical performance for potential use as supercapacitor electrode material. The unique flower-like core-shell structure contributed to the excellent performance of ZnCo2S4@PPy, making it a promising electrode material for future energy-storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Murni Handayani, Yhana Mulyaningsih, M. Aulia Anggoro, Aumber Abbas, Iwan Setiawan, Farid Triawan, Nono Darsono, Yudi Nugraha Thaha, Ika Kartika, Gagus Ketut Sunnardianto, Isa Anshori, Grzegorz Lisak
Summary: The ternary nanocomposite of reduced graphene oxide/chitosan/ZnO was synthesized using a one-step hydrothermal method. The structure-capacitive performance relationships and the effect of prolonged hydrothermal process on supercapacitor applications were investigated. The nanocomposite exhibited improved conductivity and electroactive sites, leading to enhanced electrochemical properties and cyclic stability in supercapacitor devices.
Article
Materials Science, Multidisciplinary
Melih Besir Arvas, Sibel Yazar, Songul Eglence-Bakir, Musa Sahin
Summary: Thiosemicarbazide derivatives doped polypyrrole based electrodes were synthesized, and it was found that N-Cyclohexyl TSC had the highest and most curative effect on the electrochemical performance. The PPy/N-Cyclohexyl TSC (2.5 mM) electrode exhibited a capacitance of 300.5 F/g in 0.5 M H2SO4 and showed good capacitance retention rate during the 5000 cycles life cycle test.
Article
Chemistry, Physical
Muwafaq Mashrah, Safa Polat
Summary: This study investigated the impact of graphene on the electrochemical performance of MgFe2O4. The electrode was prepared on a nickel foam surface using a hydrothermal technique, and the crystallographic, morphological, and chemical properties were examined. The electrochemical characteristics were evaluated using cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectrometry (EIS). The results showed that synthesized MgFe2O4 with GNPs on a porous structure exhibited significantly improved specific capacitance and stability.
SOLID STATE IONICS
(2023)
Article
Chemistry, Physical
Senyang Song, Xiaoyan Ma, Wenyue Li, Boyuan Zhang, Bo Shao, Xiaoyu Chang, Xiaoju Liu
Summary: In this study, a dual-function electrode material, stylophora coral-like Ni/Co bimetal metal organic framework, was prepared. It exhibited high charge transfer efficiency due to the high molecular stacking properties and unique morphology. This material showed promising performance in supercapacitors and non-enzymatic glucose sensing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Siqi Shao, Song Liu, Changguo Xue
Summary: Bimetallic selenide compounds, particularly the coral-like MnCo selenide, prepared using a facile electrodeposition method on nickel foam, exhibit excellent electrochemical performance for supercapacitor electrodes. The unique coral-like and dendritic-dispersed structure, as well as the bimetallic synergistic effect, contribute to high specific capacitance (509 C g-1 at 1 A g-1) and outstanding cycling stability (94.3% capacity retention after 5000 cycles). Furthermore, an asymmetric supercapacitor composed of MnCo selenide anode and active carbon cathode achieves a high specific energy of 46.2 Wh kg-1 at 800 W kg-1. These findings highlight the promise of coral-like MnCo selenide as an energy storage material.