Article
Materials Science, Ceramics
V. V. Deshmukh, H. P. Nagaswarupa, N. Raghavendra
Summary: Transition metal ferrites play crucial roles in modern technology, with Co-doped MnFe2O4 nanomaterials showing promising super capacitive behavior for energy storage applications. Specifically, 2 wt% Co-doped MnFe2O4 exhibits the highest capacitance among the tested samples.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Ala Manohar, V. Vijayakanth, S. V. Prabhakar Vattikuti, Ki Hyeon Kim
Summary: The mixed Ni-Zn nanoparticles with noteworthy shape are synthesized using a solvothermal reflux technique. The crystalline spinel cubic structure, morphology, and correct stoichiometric element ratio are confirmed by various analysis techniques. Electrochemical performances of the electrode material are investigated using cyclic voltammetry and Galvanostatic charge-discharge techniques. Among the electrodes, the Ni0.7Zn0.3Fe2O4 (ZNF3) electrode exhibits the highest specific capacitance of 152 F/g at a current density of 2 A/g, and the ZNF3 electrode also shows a higher photocurrent density based on the linear sweep voltammetry curve.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Energy & Fuels
Wissem Zayani, Samir Azizi, Karam S. El-Nasser, Ibraheem Othman Ali, Michel Moliere, Nouredine Fenineche, Hamadi Mathlouthi, Jilani Lamloumi
Summary: Zinc ferrite spinel alloy synthesized using sol-gel technique was studied for its hydrogen storage properties and applied as an anode in Ni-MH accumulators. Various electromechanical methods were used to examine the hydrogen storage properties, showing good cycling stability. The electrolyte/ZnFe2O4 anode interface was studied using electrochemical impedance spectroscopy before and after activation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Physical
S. Rajkumar, R. Subha, S. Gowri, A. Bella, J. Princy Merlin
Summary: The study successfully synthesized aminophenol-modified zinc oxide, which showed excellent electrochemical performance and is suitable for supercapacitors.
Article
Electrochemistry
R. Chandrashekhar, Abhijit A. Yadav
Summary: The doping of cobalt into RuO2 using an aqueous/organic solvent mixture in the spray pyrolysis technique is shown to significantly improve the optical properties and electrochemical performance of RuO2, leading to excellent long-term cyclic stability and high specific capacitance. This study suggests that cobalt-doped RuO2 is a promising material for supercapacitor applications.
ELECTROCHIMICA ACTA
(2023)
Article
Energy & Fuels
Rubia Shafique, Malika Rani, Arshad Mahmood, Razan A. Alshgari, Kiran Batool, Tahira Yaqoob, Naveed Kausar Janjua, Safia Khan, Shamim Khan, Ghulam Murtaza
Summary: A novel method of synthesizing MXene/CoCr2O4 nanoelectrode material with high stability and conductivity has been reported. The optimized nanocomposite shows superior electrochemical performance in alkaline electrolyte, indicating its potential applications in electrochemical devices such as supercapacitors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Applied
Kamarajar Prakash, Santhanakrishnan Harish, Shanmugasundaram Kamalakannan, Thirumalaisamy Logu, Masaru Shimomura, Jayaram Archana, Mani Navaneethan
Summary: This article investigates the doping effects on two-dimensional Molybdenum Sulphide (MoS2) to improve conductivity and efficiency. Different weight percentages (2%, 4%, 6%, 8%, 10%) of Nickel (Ni) were doped into the MoS2 matrix using a simple hydrothermal technique, and their effects were studied using physio-chemical analyses. The results show that Ni-doped MoS2 nanosheets exhibit enhanced interlayer spacing and the 6% Ni-doped MoS2 electrode material shows better electrochemical performance.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Vidyadevi A. Jundale, Abhijit A. Yadav
Summary: CoFe2O4 thin films were prepared using chemical spray pyrolysis and characterized for their structural, morphological, compositional, optical, electrical, and electrochemical properties. The films exhibited the spinel cubic phase with a crystallite size ranging from 15 to 23 nm. They showed a porous spherical granular surface morphology. The films had an optical bandgap of 2.33 eV to 2.54 eV and demonstrated semiconducting behavior. The CoFe2O4 thin film prepared at 425 degrees C showed excellent electrochemical properties, making it a potential candidate for supercapacitors.
Article
Energy & Fuels
Weiwei Zhu, Dekui Shen
Summary: The development of high-performance anode materials is crucial for enhancing the electrochemical performance of asymmetric supercapacitors. In this study, nickel ferrite/nitrogen-doped porous carbon composite was successfully synthesized and exhibited improved electrochemical properties. The specific capacitance, energy density, and cycle stability of the composite were significantly enhanced by increasing the nitrogen content on the porous carbon surface. The nitrogen atoms provided active sites for the growth of nickel ferrite nanoparticles, enhancing the interfacial effect between the nanoparticles and carbon materials.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
A. P. R. Fernandez, E. A. Perigo, R. N. Faria
Summary: The capacitance of electrochemical supercapacitors depends on the applied potential, requiring a simplified equivalent circuit for deriving related expressions. The theoretical development shows very good agreement with experimental cyclic voltammetry data.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Multidisciplinary
M. A. Shilpa Amulya, H. P. Nagaswarupa, M. R. Anil Kumar, C. R. Ravikumar, K. B. Kusuma
Summary: The electrochemical characteristics of manganese ferrite nanoparticles were assessed in this study, demonstrating their potential applications in semiconductors, sensors, and energy storage devices. Various techniques were employed to determine the physical and chemical properties of the nanoparticles, with specific capacitance values obtained under acidic and basic electrolytes. The sonochemical synthesis of MnFe2O4 showed promising results in degrading dyes under ultraviolet light.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Energy & Fuels
Nadeem Anwar, Abdul Shakoor, Ghulam Ali, Haseeb Ahmad, Niaz Ahmad Niaz, Seerat- Seerat-Ul-Arooj, Arshad Mahmood
Summary: In this study, high-performance nanoscale supercapacitor electrode materials of polyaniline and polyaniline cadmium oxide composites were fabricated using in-situ chemical polymerization route. The obtained nanocomposites exhibited higher specific capacitance and lower equivalent series resistance, indicating superior electrochemical properties. Therefore, this material shows promising potential as a candidate for practical supercapacitor electrode preparation.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Mikhail Evgenievich Kompan, Vladislav Gennadievich Malyshkin
Summary: A novel inverse relaxation technique for supercapacitor characterization has been developed, allowing for easy setup, high discharge current regime, and complete automation through microcontroller. The technique provides an alternative approach to traditional impedance measurements and is effective for characterization of supercapacitors and other systems with porous internal structure.
JOURNAL OF POWER SOURCES
(2021)
Article
Environmental Sciences
Aziz Aynaou, Boubaker Youbi, Youssef Lghazi, Mohammed Ait Himi, Chaimaa El Haimer, Jihane Bahar, Ahmed Sahlaoui, Itto Bimaghra
Summary: In this study, polyaniline films were fabricated on ITO substrates using different electrolytes. The effect of the counter ion on the electrochemical energy storage performances of polyaniline in supercapacitors was investigated. The specific capacitance was found to have a clear dependence on the counter ion.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Gibson P. Scisco, Mark E. Orazem, Kirk J. Ziegler, Kevin S. Jones
Summary: The capacitances of electrochemical systems determined from cyclic voltammetry (CV) are affected by the constant-phase element (CPE) behavior, which can be illustrated by simulated circuits. The capacitance extracted from CV follows a power law relationship with sweep rate, and a critical sweep rate can be defined by comparing CV-obtained capacitance with that from electrochemical impedance spectroscopy (EIS) data, allowing for an effective time constant formulation for the circuits. Sweep rates at least two orders of magnitude below the critical rate should be used in CV to mitigate the influence of the system's time constant on the measured capacitance. Reporting CPE parameters R, Q, and alpha is recommended for more accurate comparisons of supercapacitors rather than capacitance vs. sweep rate data from CV measurements.
JOURNAL OF POWER SOURCES
(2021)
Article
Environmental Sciences
Navneet Kumar, Uijin Jung, Bomseumin Jung, Jinsub Park, Mu. Naushad
Summary: In this study, a zinc hydroxystannate/zinc-tin oxide (ZHS/ZTO) heterostructure was synthesized and showed excellent photocatalytic degradation efficiency for methyl orange and tetracycline. The dominant role of OH radicals was confirmed in the photocatalytic removal process.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Devaraj Manoj, Saravanan Rajendran, Mu. Naushad, Madhappan Santhamoorthy, F. Gracia, Matias Soto Moscoso, M. A. Gracia-Pinilla
Summary: In this study, mesoporous copper oxide (CuO) nanocrystals decorated on TiO2 nanostructures were successfully synthesized to form p-n heterojunction nanocomposites. The resulting CuO-TiO2 nanocomposite showed good electrochemical performance on modified GC electrode, enabling efficient oxidation of catechol with wide linear range and excellent sensing properties, capable of detecting catechol in real samples like lake and river water.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Pooja Dhiman, Garima Rana, Razan A. Alshgari, Amit Kumar, Gaurav Sharma, Mu. Naushad, Zeid A. ALOthman
Summary: In this work, a mixed-spinel ferrite anchored onto graphitic carbon nitride (GCN) was synthesized and used for mineralization of antibiotic pollutant from waste water. A Z-scheme g-C3N4/Ni0.5Zn0.5Fe2O4 nano heterojunction was fabricated through pyrolysis, solution combustion, mechanical grinding, and annealing. The prepared photocatalyst showed a maximum degradation efficiency of 97.10% for Doxycycline (DC) drug under natural sunlight in a 60-minute experiment. The Z-scheme heterojunction between g-C3N4 and Ni-Zn ferrite improved the photoinduced charge separation, protection of redox capability, and thereby enhanced the photo degradation efficiency. Scavenging experiments indicated that O-2(-center dot) and h(+) were the main active species responsible for the antibiotic degradation. Furthermore, dopant variation allowed for band gap and energy band positioning shifts, making them excellent candidates for synthesizing tunable heterostructures with organic semiconductors.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Nanasaheb M. Shinde, Siddheshwar D. Raut, Balaji G. Ghule, Ramesh J. Deokate, Sandesh H. Narwade, Rajaram S. Mane, Qixun Xia, James J. Pak, Jeom-Soo Kim
Summary: In this work, 3-D dandelion flower-like nickel chloride (NiCl2) nanostructures were synthesized for the first time through glycerol-mediated self-growth on nickel-foam (NiF) using a room-temperature wet chemical method. These NiCl2 flowers exhibited excellent electrocatalytic performance for the hydrogen evolution reaction (HER), outperforming NiF and NiCl2 electrodes prepared without glycerol. The glycerol-based NiCl2 electrode also showed superior reaction kinetics and stability compared to the other two electrodes.
Article
Chemistry, Physical
Shunping Ji, Yunshan Zheng, Kwan San Hui, Junfeng Li, Kaixi Wang, Chunyan Song, Huifang Xu, Shuo Wang, Chenyang Zha, Duc Anh Dinh, Zikang Tang, Zongping Shao, Kwun Nam Hui
Summary: By mixing amorphous zinc phosphate with black phosphorus nanomaterials, the agglomeration of black phosphorus can be weakened, and the volume expansion can be reduced, thus improving the stability of the composite electrode in humid air. The optimized amorphous black phosphorus/zinc phosphate composite anode retains a capacity of 369.0 mA h g-1 and reduces the volume expansion to 47% compared to the untreated electrode. Additionally, the amorphous zinc phosphate can absorb water, resulting in good environmental stability even after exposure to humid air for two days, with a reversible capacity of 629.2 mA h g-1.
ENERGY STORAGE MATERIALS
(2023)
Article
Energy & Fuels
Zeenat A. Shaikh, Nanasaheb M. Shinde, Pritamkumar V. Shinde, Sushil S. Sangale, Siddheshwar D. Raut, Shoyebmohamad F. Shaikh, Satish U. Ekar, Mohaseen S. Tamboli, Rajaram S. Mane
Summary: In this study, a stretchable, foldable, and flexible commercial sponge has been converted into a conducting material by incorporating polypyrrole (PPy). Bismuth oxide (Bi2O3) electrode material with a wool ball-like morphology is synthesized over PPy-coated sponge, creating a hybrid Bi2O3@PPy electrode. The unique morphology of Bi2O3 and the porous structure of PPy@sponge result in a high number of active sites and short diffusion pathways, enabling efficient electron-ion transportation. A pencil-type asymmetric supercapacitor using Bi2O3@PPy//graphite rod electrodes delivers high energy and power densities, as well as excellent cycling stability.
Article
Energy & Fuels
Rutuja A. Chavan, Gokul P. Kamble, Sarika B. Dhavale, Akash S. Rasal, Sanjay S. Kolekar, Jia-Yaw Chang, Anil Vithal Ghule
Summary: MXene composites with different metal oxides have shown good electrochemical performance and hinder restacking of MXene. In this study, nickel oxide@MXene (NO@MXene) composites with varying compositions were synthesized and used as an anode for a supercapacitor. The 15% NO@MXene composite electrode demonstrated the highest capacitance, and an all-solid-state asymmetric supercapacitor with 15% NO@MXene as the anode displayed good cyclic stability and high energy and power densities.
Article
Chemistry, Multidisciplinary
Sachin B. Shinde, Sneha R. Bhosale, Nagesh B. Birajdar, Anil H. Gore, Govind B. Kolekar, Sanjay S. Kolekar, Ajinkya D. Mandake, Prashant V. Anbhule
Summary: In this article, calcium sulfate nanoparticles (CaSO4 NPs) were synthesized from waste chalk powder using the calcination method. These NPs were used to construct a photocatalyst called mpg-C3N4-CaSO4. Various characterization techniques were used to confirm the synthesized materials. The efficiency of the photocatalytic degradation of methylene blue (MB) using the optimized mpg-C3N4-CaSO4-2 composite reached 91% within 90 min under UV-vis light and 95% within 120 min under sunlight, showing excellent photostability and recyclability.
Review
Energy & Fuels
Rakhee Bhosale, Sneha Bhosale, Madagonda Vadiyar, Chitra Jambhale, Kyung-Wan Nam, Sanjay Kolekar
Summary: As porous coordination organic polymers, metal-organic frameworks (MOFs) and their derived materials and composites have unique chemistries and properties that make them attractive for energy storage applications, specifically for supercapacitors. This review discusses recent progress in designing and utilizing pristine MOFs, MOF-derived nanomaterials, and MOF-based composites for supercapacitors. It also highlights the role of electrolytes in the structure-property correlation and presents the obstacles and prospects for future MOF-related research and applications.
Article
Chemistry, Multidisciplinary
Rakhee Bhosale, Sneha Bhosale, Dattatray Narale, Chitra Jambhale, Sanjay Kolekar
Summary: Two-dimensional (2D) metal-organic framework (MOF) architectures with high surface-to-volume ratio and large surface area have been developed as electrode materials for supercapacitors. The trimetallic MOFs synthesized using a one-step reflux condensation method show excellent cyclic stability and electrochemical performance.
Article
Chemistry, Multidisciplinary
Zhenjiang Yu, Hongmei Shan, Yunlei Zhong, Guo Hong, Kwan San Hui, Xia Zhang, Kwun Nam Hui
Summary: This study presents a lithium-free V2O5 cathode for application in polymer-based solid-state batteries (SSBs) with high energy density. The microstructured transport channels and suitable operational voltage enable the utilization of polymer-based solid-state electrolyte (SSE). The V2O5 cathode, constructed through microstructural engineering, exhibits improved electrochemical performance and cycling stability in SSBs.
Article
Chemistry, Inorganic & Nuclear
Shoyebmohamad F. Shaikh, Sikandar Aftab, Bidhan Pandit, Abdullah M. Al-Enizi, Mohd Ubaidullah, Satish Ekar, Sajjad Hussain, Yogesh B. Khollam, Pravin S. More, Rajaram S. Mane
Summary: The successful deployment of sodium-ion batteries requires high-performance, sustainable, and cost-effective anode materials with a high current density. In this study, sodium disulphide (NiS2) was prepared as a composite with activated carbon (C) using a hydrothermal synthesis route. The NiS2/C composite exhibited well-defined diffraction peaks of NiS2 in the X-ray diffraction pattern, and had a surface area close to 148 m^2 g^-1 according to the Brunauer-Emmett-Teller (BET) study. With a current density of 50 mA g^-1, the NiS2/C composite showed a high capacity of 480 mA h g^-1 during the initial cycle, which decreased to 333 mA h g^-1 after 100 cycles. It also demonstrated exceptional rate capability, delivering a capacity of 270 mA h g^-1 at a high current density of 2000 mA g^-1. Ex situ X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) analyses provided insights into the chemical bonding and changes during electrochemical redox cycling, improving the understanding of the sodium storage mechanism and offering guidance for developing high-performance electrode materials for rechargeable sodium-ion batteries.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Sukhvinder Kaur Sukhmani, Rajaram S. Mane, Tabassum A. J. Siddiqui, Shoyebmohamad F. Shaikh, Sajjad Hussain
Summary: The recent trend in research is to use abundant seawater to modify metal surfaces for energy generation, storage, transport, and water-splitting technologies. This study focuses on using seawater as a solvent to modify the surface of 3D nickel-foam (NiF) to Na2O-NiCl2@NiF as an electrode material in electrochemical supercapacitors and water-splitting electrocatalysis applications. The Na2O-NiCl2 obtained from this process has shown excellent electrocatalytic activities and moderate energy storage ability, making it a promising material for energy and water applications.
DALTON TRANSACTIONS
(2023)
Article
Computer Science, Information Systems
Medha Gijare, Sharmila Chaudhari, Satish Ekar, Shoyebmohamad F. Shaikh, Rajaram S. Mane, Bidhan Pandit, Muhammad Usman Hassan Siddiqui, Anil Garje
Summary: The important electrochemical measurements of rGO/TiO2 electrodes for glucose sensor application are reported in this work. The sensitivity, stability, and reproducibility of the sensor electrodes in evaluating glucose concentration in serum are investigated. Citrus limetta fruit peel waste is used to synthesize green reduction of graphene oxide (rGO), and the rGO/TiO2 composite obtained by microwave heating method is analyzed for structural and morphological properties. The rGO/TiO2 sensor electrode shows high sensitivity, stability, and repeatability, with a response time of 5 s and a minimum detection limit of 0.32 μM of glucose.
Article
Chemistry, Physical
Revati P. Potdar, Yogesh B. Khollam, Shoyebmohamad F. Shaikh, Deepika Bhandari, Abdullah M. Al-Enizi, Supriya A. Patil, Pravin S. More
Summary: This study introduces a modified optical fiber sensor coated with functionalized gold nanoparticles to detect copper ions. The sensor showed an increased output voltage with increasing concentrations of Cu2+ ions. It exhibited a polynomial relationship with Cu2+ ion concentration and higher selectivity compared to other ions.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)
