Article
Chemistry, Inorganic & Nuclear
Bhimaraya R. Biradar, Sukanya Maity, Pranay R. Chandewar, Debaprasad Shee, Partha Pratim Das, Sib Sankar Mal
Summary: The use of reduced graphene oxide (rGO) mediated polyoxometalates (POMs) based electrode materials in energy storage devices has shown promising performance due to their redox properties. In this study, rGO nanocomposites embedded with silicotungstate [K5[SiVW11O40]. nH2O (SiVW11) were synthesized for supercapacitor applications. The nanocomposites exhibited improved capacitance and stability and were successfully used to power a DC motor.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Agricultural Engineering
Weijie Ye, Jihai Cai, Fanzhe Yu, Xiaoyun Li, Xiaoying Wang
Summary: In this study, bagasse was successfully transformed into nitrogen-doped carbon spheres through hydrothermal carbonization, and the composite material with reduced graphene oxide showed promising properties as electrode material for supercapacitor, including high specific capacitance, rate capability, and cycling stability. The full solubility of bagasse in NaOH/urea aqueous system not only offers a potential method for direct conversion of lignocellulosic raw biomass into carbon spheres, but also presents a new strategy for synthesizing high capacitive and stable biomass-based electrode materials.
BIOMASS & BIOENERGY
(2021)
Article
Agricultural Engineering
Lin Li, Dou Du, Chengen He, Lianqing Yu, Wenyang Tang, Shuang Hu, Xinyu Wang, Zhuan Fu, Liangjun Xia, Weilin Xu, Lingxue Kong
Summary: A reduced graphene oxide/cotton yarn supercapacitor was fabricated using a green hydrothermal approach without the use of any chemical reducing agents. The study investigated the reduction efficiency of graphene oxide nanoparticles and morphology change of cotton fibers under different hydrothermal treatments, and their effects on the energy storage performance of the supercapacitor.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Yafei Liu, Xuming Du, Yi Li, Enhui Bao, Xianglin Ren, Huiyu Chen, Xiaodong Tian, Chunju Xu
Summary: In this study, MnCo2O4.5 microflowers (MFs) assembled by two-dimensional porous nanosheets were prepared via solvothermal reaction and subsequent annealing process. The MFs exhibited large specific surface area and rich ion diffusion pathways, leading to good overall electrochemical performance in hybrid supercapacitor and lithium-ion battery applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Fangbo Yao, Wenruo Li, Shabrina Khainunni, Jiaojiao Ma, Choji Fukuhara, Chang Yi Kong
Summary: In this study, a simple and environmentally friendly hydrothermal method for synthesizing fragment-reduced graphene oxide (FrGO) without the use of reducing agents was reported. The FrGO was used as an electrode material for a supercapacitor. The results showed that the addition of certain additives improved the material's characteristics, leading to a higher specific capacitance and better stability. This research provides guidance for the development of electrode materials for various supercapacitor devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Jiankai Wang, Baoru Zhao, Xin Huang, Yue Wang, Xiaoyu Du, Liang Wei, Yong Zhang, Wenhui Ma
Summary: By preparing carbon microspheres from waste biomass corn stalks and inserting them into composite hydrogels, the restacking of graphene sheets was effectively inhibited, resulting in high-performance electrode materials with excellent electrochemical performance. This work is of great significance for the high value-added conversion of waste biomass and the preparation of supercapacitors.
Article
Energy & Fuels
Huiyu Chen, Xuming Du, Xiaohong Liu, Runze Wu, Yi Li, Chunju Xu
Summary: This work presents a direct growth method of porous MnCo2O4.5 nanowires on nickel foam using hydrothermal synthesis. The resulting binder-free MnCo2O4.5@NF electrodes exhibit excellent electrochemical performance. Moreover, a hybrid supercapacitor assembled with activated carbon as the anode shows high energy density and cycle stability. The study demonstrates the promising potential of the MnCo2O4.5-NWs@NF electrode material for electrochemical energy storage devices.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Yangjun Zhu, Zijie Huang, Xinyue Huang, Yipei Li, Huiqin Li, Binghua Zhou, Jian Liu, Keng Xu, Mingxi Wang, Hironori Ogata, Gan Jet Hong Melvin, Josue Ortiz-Medina, Wei Gong, Zubiao Wen, Mauricio Terrones, Morinobu Endo, Zhipeng Wang
Summary: Graphene quantum dots (GQDs)@MnO2 composite shows superior supercapacitor performance compared to pure MnO2 electrode, thanks to enhanced electrical conductivity, good wettability, and abundant contact sites. The composite is obtained through a highly efficient one-step hydrothermal method, resulting in MnO2 nanosheets anchored with GQDs. The GQDs@MnO2 electrode exhibits high specific capacitance of 246 F g-1 and the assembled asymmetric supercapacitor has a high energy density of 29.9 Wh kg-1 and good cycling performance.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Multidisciplinary
Xuming Du, Jiale Sun, Runze Wu, Enhui Bao, Chunju Xu, Huiyu Chen
Summary: In this work, uniform MnCo2O4.5 nanowires and quasi-cubes were successfully prepared via a hydrothermal method, showing excellent electrochemical performance in supercapacitors. The hybrid supercapacitor device assembled with these materials demonstrated high capacity, cycling durability, and energy density, indicating promising potential for advanced energy storage applications.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Inorganic & Nuclear
Shiming Zhou, Dan Wei, Haiyi Wan, Xiu Yang, Yujuan Dai, Yu'an Chen, Fusheng Pan
Summary: By synthesizing MnCo2O4.5 nanoparticles, the de/hydrogenation performance of MgH2 has been effectively improved. The MgH2 composite doped with MnCo2O4.5 exhibits faster hydrogen release and absorption at lower temperatures.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Nanoscience & Nanotechnology
Nguyen Van Hoa, Pham Anh Dat, Nguyen Van Chi, Le Hong Quan
Summary: A three-dimensional reduced graphene oxide/nickel-cobalt sulfide aerogel with high porosity and conductivity was successfully fabricated using a one-step hydrothermal method. This aerogel demonstrated excellent performance as an active electrode material for supercapacitors, showing great potential for energy storage applications.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2021)
Article
Energy & Fuels
V. Sethuraman, R. Dhilip Kumar, A. Prabhakaran, P. Rajkumar, K. Diwakar, M. Senthilkumaran, M. Saravanan, R. Sasikumar, K. Aravinth, P. Ramasamy, R. Manigandan
Summary: The improved features of a supercapacitor, such as longer life cycle, higher specific capacitance, and higher specific power, have attracted increased attention. MnOOH nanorods and Mn2V2O7 nanopebbles were synthesized and studied for their supercapacitance behavior, showing the potential of supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Hua Li, Xiaodong Hu, Chunfeng Wang, Yujuan Chen, Kelei Zhuo, Jianji Wang
Summary: In this study, an IL-rGA material was prepared using hydrothermal reduction and modification tactics with the assistance of an ionic liquid. The IL-rGA material, with its porous texture and modified surface, enables rapid infiltration and sufficient adsorption of electrolyte ions, resulting in a significant improvement in specific capacitance. By using this material and a specific IL electrolyte, high energy density and power density supercapacitors can be achieved, meeting the requirements of a wider range of electrical facilities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Ali A. Ensafi, Reihaneh Fazel, Behzad Rezaei, Jin-Song Hu
Summary: Metal-organic frameworks (MOFs) are attracting attention as innovative electrode materials for supercapacitors due to their high porosity, active sites, and tunable structures. In this study, a new MOF composite was fabricated by a hydrothermal method, showing a high porous structure mainly spread on thin graphene oxide nano-sheets. The resulting electrode exhibited superior electrochemical characteristics with high specific capacitance and excellent capacitance retention.
Article
Chemistry, Physical
Huiyu Chen, Enhui Bao, Xuming Du, Xianglin Ren, Xiaohong Liu, Yi Li, Chunju Xu
Summary: Porous MnCo2O4.5 nanosheets with a huge specific surface area and average pore size have been successfully fabricated. The electrochemical performance of these nanosheets was evaluated, and they exhibited high specific capacity and outstanding cyclic durability. Furthermore, a hybrid supercapacitor was assembled using MnCo2O4.5 nanosheets as cathode and activated carbon as anode, showing high energy density and excellent cycling stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Electrochemistry
Wenhai Tan, Youfeng Zhang, Yichen Zhang, Yanbo Ma, Chao Zhao, Yinling Wang
Summary: This study synthesized Co3O4/CC cathode materials with excellent performance for aqueous zinc-ion batteries by varying the reactant concentration. The Co3O4/CC nanowires exhibited uniform distribution, regular surface, and small size on the carbon cloth. The battery assembled with Co3O4/CC material synthesized at a reactant concentration ratio of 2:1 showed better performance, with high discharge specific capacity and capacity retention rate.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2024)
Article
Electrochemistry
T. Salahuddin, Iqra Kousar, Mair Khan, M. Munawwar Iqbal Ch
Summary: This paper investigates the dynamics of fluid motion powered by cilia within a curved channel and examines the chemical reactions occurring in the presence of electro-osmotic impact. The findings offer insights into various flow characteristics and present a method for simulating non-Newtonian fluid models in three dimensions. Additionally, the model has potential applications in the development of micro-vascular chips, which could be crucial for diagnosing blood-related issues.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2024)
Review
Electrochemistry
Ahmed Abou-Shady
Summary: Soil electrokinetic (SEK) is a significant technology with various applications in fields such as soil remediation, pollutant removal, and water regulation. This review summarizes the recent advancements in SEK, focusing on electrode modifications and material additives, and suggests future research directions.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2024)
