Article
Polymer Science
N. Ali, S. Z. Z. Abidin, S. R. Majid, N. K. Jaafar
Summary: Polymer electrolytes based on agarose and Magnesium Nitrate were prepared with different weight percentages and studied for their electrical properties. The highest ionic conductivity film was achieved by doping 30 wt% Magnesium Nitrate, leading to increased amorphous nature of the polymer and stable electrochemical properties up to 3.57V. Various analytical techniques, including XRD, FTIR, LSV, and CV, were used to study the molecular interactions and performance of the electrolyte.
Article
Chemistry, Multidisciplinary
Anji Reddy Polu, Aseel Abdulameer Kareem, Kwangmin Kim, Dongkyu Kim, Mekala Venkanna, Hussein Kh. Rasheed, Kanapuram Uday Kumar
Summary: The solution-cast method was used to prepare new solid polymer electrolytes (SPEs) based on polyethylene glycol (PEG) complexed with potassium nitrate (KNO3). The conductivity of the electrolyte increased with increasing salt concentration, and the optimum conducting composition (OCC) showed a significant increase in conductivity compared to pure PEG. The conductivity was also found to follow the Arrhenius rule and increase with temperature. The dielectric permittivity was affected by both temperature and frequency.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Simadri Badatya, Dhiraj Kumar Bharti, Avanish Kumar Srivastava, Manoj Kumar Gupta
Summary: Bio-compatible and eco-friendly transparent flexible piezoelectric nanogenerators have been developed using eggshell membrane and PVDF. The hybrid structure exhibited high output voltage and current, with improved dielectric properties. This technology provides a new way to generate green energy from solid waste and enhance the performance of PVDF-based nanogenerators for powering self-powered medical devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
N. Sandhya Rani, H. D. Swapna, R. Karthik, C. Manasa
Summary: The solution casting technique was used to synthesize film samples of hydroxypropyl methylcellulose (HPMC)/poly vinylalcohol (PVA) blends embedded with various concentrations of copper oxide (CuO) nanoparticles. The research focused on the structural analysis, conductivity properties, and electrical characteristics of the polymer electrolytes. The results showed that increasing the concentration of CuO decreased the crystalline size and percentage of crystallinity, thereby affecting the conductivity properties. The uniform dispersion of nano CuO in the polymer was confirmed through surface morphology and phase formation analysis. Frequency and temperature analysis revealed that the AC conductivity increased with increasing frequency and temperature. The findings of this study have important implications for the application of these nanocomposite polymer electrolytes in electrochemical cell devices.
Article
Chemistry, Multidisciplinary
Lei Shi, Changgeng Zhang, Yuhan Du, He Zhu, Qi Zhang, Shiping Zhu
Summary: Introducing ionically conductive liquid electrolytes as functional fillers in polymers can significantly improve dielectric properties and achieve high transparency, good stretchability, and high dielectric constant. This novel strategy offers new possibilities for manufacturing highly sensitive sensors and flexible electroluminescent devices with low driving voltage.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Yi-Han Su, Yu-Hsing Lin, Yu-Hsien Tseng, Yuh-Lang Lee, Jeng-Shiung Jan, Chi-Cheng Chiu, Sheng-Shu Hou, Hsisheng Teng
Summary: The paper introduces a postinjection gelated GPE for electric double layer capacitors, synthesized by blending polymers with a conventional liquid electrolyte. This new electrolyte exhibits superior ionic conductivity and dielectric properties, making it suitable for industrial-scale assembly lines and practical applications.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Applied
Ruiyang Li, Haiming Hua, Yuejing Zeng, Jin Yang, Zhiqiang Chen, Peng Zhang, Jinbao Zhao
Summary: In this study, an amorphous polymer electrolyte with EO and PO block structure was synthesized to improve the ionic conductivity, leading to a further improved ionic conductivity value by constructing a dual range fast ionic conduction.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Samia A. Saafan, Mostafa K. El-Nimr, Marwa M. Hussein, Maha K. Omar
Summary: The study prepared Mg Zn nano-ferrites, benzoxazine monomer, polybenzoxazine polymer (PBZ), and PBZ/ferrite composites with different weight ratios through citrate-nitrate auto combustion and co-precipitation methods. The FTIR analysis showed the presence of ferrites and PBZ in the composites, while the results of conductivity and dielectric constant were consistent and mutually reinforcing, indicating potential applications in semiconductor element mounting boards.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Characterization & Testing
Eyob Wondu, Zelalem Chernet Lule, Jooheon Kim
Summary: This study focuses on the fabrication of thermoplastic polyurethane (TPU) composites with high thermal conductivity and dielectric constants, which can be used in electronic devices that are able to store charge and dissipate heat. The composites showed promising characteristics in terms of charge storage, heat dissipation, and mechanical properties. The thermal conductivity of the composite was significantly higher and the dielectric property was better compared to other investigated composites.
Article
Chemistry, Physical
C. Revathy, V. R. Sunitha, Benson K. K. Money, Rex Joseph, S. Radhakrishnan
Summary: Blended solid polymer electrolytes (BSPE) were prepared by mixing different molecular weight polymers and lithium salt. The addition of PEO5 and PVDF into the PEO6 matrix improved the overall lithium-ion dynamics, with a maximum conductivity of 6.44 x 10(-4) Scm(-1) at 303 K. The DC conductivity variation with temperature followed Arrhenius relation, while the AC conductivities varied with frequency according to Jonscher's power law. The dielectric constant and relaxation of the BSPE systems were also investigated.
Article
Materials Science, Multidisciplinary
M. Mostafa, B. I. Salem
Summary: A series of (Co0.2 Zn0.8-xCdxFe2O4) nanoparticles were synthesized by flash auto combustion method. The structural and morphological properties were characterized using XRD, FTIR, and SEM analysis. The results showed that Cd doping influenced the crystal growth and caused a shift in the FTIR analysis peak towards lower wavenumber. Additionally, the samples exhibited soft magnetic behavior based on the magnetic measurement.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
A. M. S. Nurhaziqah, M. K. Ahmad, A. B. Faridah, D. G. Saputri, S. A. Ramli, M. H. Mamat, M. Shimomura
Summary: This research aims to improve the conductivity of a polymer blend with quasi solid state electrolyte by selecting target polymers, PMMA and PVdF, and analyzing their ratio, electrical impedance spectroscopy (EIS) and thermogravimetric analysis (TGA). The optimum conductivity value was found to be 3.44 x 10-6 Scm-1 at ambient temperature with a PMMA:PVdF ratio of 70:30. The analysis also showed that conductivity increases with temperature and has low activation energy (Ea). Additionally, the TGA demonstrated the stability of PBE up to 651 degrees C. Different concentrations of PBE were investigated to assess its stability and conductivity performance.
Article
Chemistry, Physical
Joshua E. E. Bostwick, Deyang Yu, Curt J. J. Zanelotti, Theo J. J. Dingemans, Louis A. A. Madsen, Ralph H. H. Colby
Summary: Single-ion-conducting electrolytes, composed of rigid-rod polyanion poly(2,2'-disulfonyl-4,4'-benzidine terephthalamide) (PBDT), Na+/Li+ counterions, and poly(ethyleneglycol) (PEG), have been developed as solid-state electrolytes with high thermal stability. These materials show a significant increase in modulus and ionic conductivity with increasing PBDT content and PEG concentration, making them promising candidates for use in solid-state batteries. The combination of high cation conductivity and high modulus in LiPBDT-PEG membranes surpasses that of competing single-ion conductors at 30°C.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Kiran Naz, Junaid Kareem Khan, Muhammad Khalid, Muhammad Saeed Akhtar, Zaheer Abbas Gilani, H. M. Noor ul Huda Khan Asghar, Gaber A. M. Mersal, Mohamed M. Ibrahim, A. Muhammad, M. G. B. Ashiq
Summary: A series of nickel substituted copper spinel ferrite nanoparticles were fabricated using sol-gel auto-combustion technique. The structural properties of the compound were determined through X-ray diffraction analysis. The dielectric properties of the synthesized nanomaterials were observed to vary with the nickel concentration, suggesting their potential application in microwave devices.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Composites
Gulben Torgut, Nagihan Karaaslan Ayhan, Aslisah Acikses
Summary: The precipitation method was used to synthesize a poly(epsilon-caprolactone-copolymer-ethylene oxide) composite with lanthanum salt. The thermal and dielectric properties of the polymer were studied by incorporating different weight percentages of the salt. Characterization techniques such as Fourier Transform Infrared Spectroscopy, X-ray diffractometry, scanning electron microscopy, and thermogravimetric analysis were used. The results showed that the thermal stability of the composites was lower than that of the pure polymer, and the dielectric properties and AC conductivity increased with increasing lanthanum content. This eco-friendly and easy-to-handle method provides a promising route for polymer composites in the field of conductivity.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Applied
Shameer Hisham, Hairul Anuar Tajuddin, Norazilawati Muhamad Sarih, Nur Zarith Diana Diana Zakaria, Zul Hazrin Zainal Abidin, Norhana Abdul Halim
Summary: In this study, the effects of intermolecular hydrogen bonding on the physical and thermal characteristics of PMMA/PMVEMA-ES blends as coatings were evaluated. The addition of PMVEMA-ES improved the adhesion and thermal properties of the coatings, indicating the presence of intermolecular hydrogen bonding interactions between the two components.
PIGMENT & RESIN TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rebar T. Abdulwahid, Shujahadeen B. Aziz, Mohd F. Z. Kadir
Summary: This study used the solution casting method to prepare a biodegradable polymer blend electrolyte consisting of chitosan and potato starch. It was found that the addition of potassium thiocyanate salt significantly reduced the crystalline phase of the host polymers. Fourier transform infrared spectroscopy was used to analyze the microstructural modifications and ion transport parameters. Electrochemical impedance spectroscopy and electrical equivalent circuit modeling were employed to investigate the electrical properties of the electrolyte films. The addition of salt improved the dielectric properties of the electrolyte.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2022)
Article
Chemistry, Multidisciplinary
Jihad M. Hadi, Shujahadeen B. Aziz, Hwda Ghafur Rauf, Rebar T. Abdulwahid, Sameerah I. Al-Saeedi, Dana A. Tahir, M. F. Z. Kadir
Summary: In this study, free-standing plasticized solid polymer electrolyte films were prepared using a solution casting approach. The addition of ammonium fluoride and glycerol plasticizer improved the structural, electrical, and electrochemical properties of the electrolyte. Measurements and analysis of conductivity, dielectric constant, and ion transference number were conducted. The results demonstrated the feasibility of this electrolyte in terms of conductivity behavior and stability.
ARABIAN JOURNAL OF CHEMISTRY
(2022)
Article
Polymer Science
Muhamad Hafiz Hamsan, Norhana Abdul Halim, Siti Zulaikha Ngah Demon, Nurul Syahirah Nasuha Sa'aya, Mohd Fakhrul Zamani Kadir, Zul Hazrin Zainal Abidin, Nursaadah Ahmad Poad, Nurul Farhana Abu Kasim, Nur Amira Mamat Razali, Shujahadeen B. Aziz, Khairol Amali Ahmad, Azizi Miskon, Norazman Mohamad Nor
Summary: In this research, a flexible and free-standing supercapacitor based on bacterial cellulose (BC) is fabricated by optimizing the symbiotic culture of bacteria and yeast (SCOBY) as both electrodes and electrolytes. The addition of montmorillonite (MMT) and sodium bromide (NaBr) improves the mechanical strength and acts as an ionic source. The optimized SCOBY-based electrolytes exhibit high room temperature conductivity and good decompose voltage and ionic transference number. The supercapacitor shows a decent performance during 1000 cycles of charging and discharging.
Article
Multidisciplinary Sciences
Muhamad Hafiz Hamsan, Norhana Abdul Halim, Siti Zulaikha Ngah Demon, Nurul Syahirah Nasuha Sa'aya, Mohd Fakhrul Zamani Kadir, Zul Hazrin Zainal Abidin, Nursaadah Ahmad Poad, Nurul Farhana Abu Kasim, Nur Amira Mamat Razali, Shujahadeen B. Aziz, Khairol Amali Ahmad, Azizi Miskon, Norazman Mohamad Nor
Summary: Bacterial cellulose was used as the polymer matrix and hydroxyl multi-walled carbon nanotubes were used as the electrode material in the fabrication of the electrochemical double-layer capacitor. Chitosan-based electrolyte was employed. The study showed that the addition of hydroxyl multi-walled carbon nanotubes improved the performance of the capacitor, and increasing the amount of hydroxyl multi-walled carbon nanotubes led to better results.
Article
Chemistry, Multidisciplinary
Mohamad A. Brza, Shujahadeen B. Aziz, Rebar T. Abdulwahid, Hawzhin B. Tahir, Mohd F. Z. Kadir
Summary: A proton-conducting material was synthesized by solution casting technique using modified polymer, ammonium thiocyanate, and glycerol electrolyte. The highest conductivity of 1.58 x 10-3 S/cm was achieved with a glycerol loading of 50 wt.%. Electrochemical impedance spectroscopy simulations were used to determine ion transport parameters, including a diffusion coefficient (D) of 4.67 x 10-7 cm2 s-1, mobility (l) of 1.82 x 10- 5 cm2 V-1 s, and carrier density (n) of 5.42 x 1020 cm -3.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Shahan Shah, Z. H. Z. Abidin, I. M. Noor, Z. Osman, A. K. Arof
Summary: In this work, gold nanoparticles of 100 nm were added to the active layer of DSSC. The DSSCs were characterized through J-V characteristics, IMVS, and IMPS measurements. The cell with 3 wt.% Au NP in the photoanode showed an efficiency of 8.56% and had the lowest electron transfer time of 7.32 ms and longest charge recombination time of 115.33 ms.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2023)
Article
Chemistry, Multidisciplinary
Shahan Shah, Zul Hazrin Zainal Abidin, I. M. Noor, Zurina Osman, A. K. Arof
Summary: The use of silver nanoparticles improves light absorption in dye-sensitized solar cells. The electrolyte containing 2 wt.% silver nanoparticles shows the highest conductivity and the resulting solar cell achieves the highest efficiency of (6.99 ± 0.15)%.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2023)
Article
Chemistry, Multidisciplinary
Jacky Yong, Nurrul Asyiqin Shamsuri, Abu Bakar Bashir, Mohd Fakhrul Zamani Kadir, Muhammad Fadhlullah Abd Shukur
Summary: Solid polymer electrolytes (SPEs) are a preferable alternative to liquid electrolytes, but their low conductivity limits their application. This issue can be overcome by adding controlled amounts of dopant salt to the SPEs. In this study, ammonium thiocyanate (NH4SCN) salt was incorporated into dextran to investigate its effect on electrical properties, crystallite size, morphology, and ionic conductivity. Results confirm the coordination of the salt cation at specific groups in dextran, and the ion mobility and diffusion were found to be directly related to ionic conductivity. An optimum ionic conductivity was achieved with 40 wt.% salt concentration. Crystallite size analysis and microscopic observation confirmed the conductivity results.
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
(2023)
Article
Chemistry, Physical
N. A. Shamsuri, Z. E. Rojudi, V. T. Vicxeant, I. M. Noor, M. F. Z. Kadir, M. F. Shukur
Summary: This paper presents the characterization and application of plasticized polyacrylonitrile (PAN)-methylcellulose (MC) doped with lithium iodide (LiI) as a symmetric supercapacitor. The addition of glycerol to the PAN-MC-LiI resulted in an interaction between the materials, as observed in Fourier transform infrared spectroscopy (FTIR) analysis. X-ray diffraction (XRD) analysis showed that the electrolyte with 20 wt.% glycerol (PMG20) had the lowest degree of crystallinity and the highest room temperature conductivity. The electrochemical double layer capacitor (EDLC) fabricated using PMG20 as the electrolyte exhibited a high specific capacitance and electrochemical stability.
Article
Polymer Science
M. F. Aziz, N. A. Shamsuri, M. H. Hamsan, Y. M. Yusof, M. A. Azam, Shujahadeen B. Aziz, H. Rusdi, M. F. Z. Kadir, M. F. Shukur
Summary: Searching for biodegradable alternative materials is important in reducing waste from electronics. A biodegradable biopolymer electrolyte system based on polyvinyl alcohol-chitosan blend was prepared. The inclusion of lithium acetate and ethylene carbonate improved the performance of the electrolyte.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Sameerah I. Al-Saeedi, Shujahadeen B. Aziz, Jihad M. Hadi, Peshawa O. Hama, Rebar T. Abdulwahid, Ari A. Abdalrahman, Ary R. Murad, Wrya O. Karim, Norhana Abdul Halim, Mohd Fakhrul Zamani Kadir, Samir M. Hamad
Summary: In this study, a green electrolyte with improved properties was developed by incorporating methylcellulose (MC) polymer, potassium thiocyanate, and glycerol. The electrochemical and structural characteristics of the electrolyte were examined, and its suitability for device applications was confirmed. The performance of the newly constructed electric double-layer capacitor (EDLC) was evaluated. Rating: 7 out of 10
ARABIAN JOURNAL OF CHEMISTRY
(2023)
Article
Energy & Fuels
Rebar T. Abdulwahid, Shujahadeen B. Aziz, Mohd F. Z. Kadir
Summary: Biopolymer membranes derived from natural resources, such as chitosan and potato starch, doped with ammonium thiocyanate were used as host electrolyte for electrochemical energy storage devices. Glycerol was used as a plasticizer to prepare plasticized solid biopolymer electrolytes. The addition of glycerol improved the ion conductivity of the electrolyte, and the optimal composition was achieved with 24 wt% of glycerol. The resulting electrolyte showed excellent ion transference number and electrochemical potential stability. The assembled electric double-layer capacitor (EDLC) device exhibited high performance and cyclic stability throughout 2500 cycles.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Green & Sustainable Science & Technology
Rebar T. Abdulwahid, Shujahadeen B. Aziz, Mohd F. Z. Kadir
Summary: Flexible free-standing blended solid biopolymer electrolytes (BSBEs) were developed using chitosan and potato starch as the host biopolymers, potassium thiocyanate as the cation provider, and glycerol as a plasticizer. The BSBE films showed promising properties with enhanced conductivity and ion transference number under the addition of glycerol. The fabricated EDLC exhibited excellent cyclic stability, high energy, and power densities.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Energy & Fuels
Shujahadeen B. Aziz, Rebar T. Abdulwahid, Pshko A. Mohammed, Srood O. Rashid, Ari A. Abdalrahman, Wrya O. Karim, Bandar A. Al-Asbahi, Abdullah A. A. Ahmed, M. F. Z. Kadir
Summary: This study investigates a novel biodegradable green polymer electrolyte for energy storage. Results show that the sample with added glycerol has the highest conductivity. The primary conduction species in the electrolyte are ions. Testing confirms that the sample can withstand a voltage suitable for practical applications.
JOURNAL OF ENERGY STORAGE
(2024)
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)
