Article
Chemistry, Multidisciplinary
S. Silambarasan, T. Maiyalagan
Summary: In this study, dopamine-derived nitrogen-doped carbon was coated on spinel phase MnCo2O4 nanospheres. The electrochemical performance of the MnCo2O4@Nitrogen-doped carbon electrode material was analyzed, showing high specific capacitance and excellent cyclic stability. The composite's enhanced performance can be attributed to the synergistic effect between nitrogen-doped carbon and porous MnCo2O4 spheres. Moreover, an asymmetric supercapacitor device was fabricated, achieving high energy density and good capacitance retention.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Shamali S. Rendale, Tejasvinee S. Bhat, Pramod S. Patil
Summary: This article explores and summarizes the use of MnCo2O4 as a superior transition metal oxide for energy storage applications in the field of supercapacitors. It highlights new progress in enhancing the specific capacitances, energy densities, cycling stability, and rate capability of MnCo2O4-based materials, and discusses possible ways to create controllable architectures, control special morphologies, and design composites. The article concludes with perspectives on the future development of MnCo2O4 used as supercapacitor electrodes.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
S. S. Rendale, S. A. Beknalkar, A. M. Teli, J. C. Shin, T. S. Bhat
Summary: In this study, MnCo2O4 was grown on Ni-foam by hydrothermal method with different deposition times. The structural, morphological, and electrochemical properties of the MnCo2O4 electrodes were systematically characterized. XRD analysis revealed the cubic crystal system of MnCo2O4 with the Fd3m space group. FESEM images displayed a morphological evolution from nanograins to aster-flower-like nanostructures. The stoichiometry of Mn, Co, and O elements as well as their valence states were investigated by EDS and XPS, respectively. The aster-flower-like MnCo2O4 nanostructure (8 h) exhibited an areal capacitance of 11.4 Fcm-2 and an energy density of about 0.98 mWhcm-2 at a current density of 3 mAcm-2 within the -0.3 to 0.5 V potential window. An asymmetric coin cell (ASCC) device showed an areal capacitance of 47.4 mFcm-2, energy density of 13.0 μWhcm-2, and power density of about 0.525 mWcm-2 with exceptional cyclability of 95% measured up to 9000 cycles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Liang Chang, Shaoqin Chen, Yuhuan Fei, Dario J. Stacchiola, Yun Hang Hu
Summary: This study achieves a high areal capacitance for supercapacitor electrodes through the synthesis of a new material, providing strategic insights for the rational design of these electrodes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Energy & Fuels
Xiaobo Chen, Wei Wang, Xin Pan, Chengqun Qiu
Summary: The hierarchical core-shell nanowire arrays of MnCo2O4@CuCo2O4/CC composite material exhibit excellent performance at 1 A g(-1) and can be used for the preparation of flexible all-solid-state asymmetric supercapacitors, showing good cycling stability and flexibility.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Jinhua Zhou, Qi Kang, Shuchi Xu, Xiaoge Li, Cong Liu, Lu Ni, Ningna Chen, Chunliang Lu, Xizhang Wang, Luming Peng, Xuefeng Guo, Weiping Ding, Wenhua Hou
Summary: This study successfully synthesized a polyaniline/Ti3C2Tx nanohybrid material with high specific capacitance and ultrahigh rate capability, which was further applied to aqueous and organic asymmetric supercapacitors, demonstrating extremely high energy density and power density.
Article
Energy & Fuels
Qing Xia, Wei Cao, Fang Xu, Yu Liu, Wenjing Zhao, Nan Chen, Guoping Du
Summary: MXene, with its unique structure and excellent properties, has great potential in the field of supercapacitor electrodes. In this study, the interlayer spacing of MXene was increased by introducing nano-scale MnCo2O4 particles, which enhanced the electrochemical performance. The assembled asymmetric supercapacitor device exhibited high energy density and excellent cycle stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Tingting Yang, Yufang Cao, Yingying Yu, Dapeng Liu, Yuyan Ma, Huili Fu, Zhengpeng Yang, Dandan Liu, Yongyi Zhang
Summary: A novel compact carbon paper electrode with high conductivity and porosity has been designed in this study. This electrode addresses the issues of traditional porous activated carbon electrodes and maintains excellent performance even at high charging rates, showing great potential for practical applications.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
P. M. Anjana, S. R. Sarath Kumar, R. B. Rakhi
Summary: In this study, MnCo2O4 nanoneedles self-organized into urchin-like morphology were directly grown on conducting nickel foam substrates for supercapacitor application using a hydrothermal method. The aqueous symmetric supercapacitor made with binder-free MnCo2O4 electrodes showed high specific capacitance and cyclic stability.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Manisha, Monika Dhanda, Rajat Arora, A. Sudharshan Reddy, Suman Lata, Anshu Sharma
Summary: This study presents a facile method for synthesizing PPy/g-C3N4/La2O3 nanocomposite electrodes via in-situ polymerization, and demonstrates their enhanced electrochemical performance. The addition of lanthanum oxide synergistically improves the specific capacitance, energy density, power density, and cyclic stability of the composite material, making it a potential electrode material for future supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Peizhi Fan, Jie Wang, Wenfei Ding, Lan Xu
Summary: The combination of multiple electrode materials and their reasonable structural design can lead to the preparation of composite electrodes with excellent performance. This study focuses on the hydrothermal growth of five transition metal sulfides on the surfaces of carbon nanofibers grown with Ni(OH)(2) and NiO (CHO) prepared by electrospinning, hydrothermal growth, and low-temperature carbonization. The CHO/NiS composite electrode exhibits optimal electrochemical properties, with a specific capacitance of up to 1717 F g(-1) (1 A g(-1)). The asymmetric supercapacitor assembled with CHO/NiS-3h as the positive electrode demonstrates the potential application of multistage core-shell composite materials in high-performance supercapacitors.
Article
Energy & Fuels
P. M. Anjana, S. R. Sarath Kumar, R. B. Rakhi
Summary: This study reports the direct growth of MnCo2S4 nanoflowers on nickel foam via a simple hydrothermal process for high-performance supercapacitors. The MnCo2S4 nanoflower electrode exhibits a high specific capacitance of 1980 F g-1 and 1243 F g-1 in three-electrode and symmetric two-electrode configurations, respectively. It also shows excellent cyclic performance (97%) and coulombic efficiency (98%) after 10,000 charge-discharge cycles at 5 A g-1. Furthermore, an asymmetric supercapacitor (ASC) device fabricated using MnCo2S4 nanoflower cathode and rGO-based anode demonstrates superior performance with increased gravimetric capacitance, excellent cycle life, high coulombic efficiency, and impressive energy density.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
V. S. Amar, J. D. Houck, B. Maddipudi, T. A. Penrod, K. M. Shell, A. Thakkar, A. R. Shende, S. Hernandez, S. Kumar, R. B. Gupta, R. V. Shende
Summary: In this study, heavy bio-oil (HBO) and hydrochar were generated from unhydrolyzed solid (UHS) derived from corn stover through hydrothermal liquefaction (HTL). The effects of different parameters on hydrochar yield and properties were investigated. The maximum specific capacitance was observed for the hydrochar electrode materials obtained at the HTL processing conditions of 275 degrees C temperature, 1 h reaction time, and specific UHS:water ratios.
Article
Chemistry, Physical
A. A. Jadhavar, Nitin T. Shelke, M. A. Yewale, R. A. Kadam, S. L. Kadam, D. K. Shin
Summary: To meet global energy demands, the development of high-capacity electrochemical energy storage devices with advanced electrode materials is crucial. In this study, the binary metal oxide Co3V2O8 (CVO) was successfully synthesized using a hydrothermal method, and its physicochemical properties were characterized using various techniques. The results showed that CVO exhibited high specific capacitance and energy density, making it a promising material for supercapacitor electrodes.
SURFACES AND INTERFACES
(2023)
Article
Energy & Fuels
Mansi Pathak, Pratap Mane, Brahmananda Chakraborty, Chandra Sekhar Rout
Summary: The synthesis of spinel MnCo2O4 composite nanostructures using 1D MWCNT and 2D MXene materials through the hydrothermal technique shows enhanced electrochemical performance for supercapacitors. The MnCo2O4/Ti3C2Tx composite demonstrates impressive capacitance and energy storage properties, making it suitable for energy storage-based applications.
JOURNAL OF ENERGY STORAGE
(2023)
