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
Engineering, Chemical
Pei Xu, Hanyang Chen, Xin Zhou, Hongfa Xiang
Summary: A series of composite gel polymer electrolytes (GPEs) based on PVDF-HFP, [EMIM][TFSI], LiTFSI, and rGO-PEG-NH2 were successfully prepared by solution casting method. The 3P5E2LG-10 GPE exhibited good conductivity and lithium ion transport properties at 30 degrees Celsius.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Sawako Mori, Takahito Obora, Mizuka Namaki, Mitsuru Kondo, Makoto Moriya
Summary: The development of solid electrolytes with Mg-ion conductivity at room temperature is crucial for achieving all-solid magnesium batteries. In this study, the researchers focused on organic ionic crystals with ion conduction paths, which demonstrated high Mg-ion conductivity in the solid state. These findings suggest that organic ionic crystals have the potential to be safe solid electrolytes for innovative Mg-ion conductors.
INORGANIC CHEMISTRY
(2022)
Article
Polymer Science
Behnam Eslami, Ismaeil Ghasemi, Masoud Esfandeh
Summary: Solid polymer electrolytes (SPEs) are a promising avenue for flexible lithium-ion batteries. However, the low ionic conductivity of polymers remains a challenge. In this study, SPE/FGO electrolytes were prepared using PEO, polyvinyl alcohol, LiClO4, and graphene functionalized with polyethylene glycol. The presence of functionalized graphene effectively reduced crystallinity, and the samples exhibited adequate ionic conductivity at room temperature.
Article
Biochemistry & Molecular Biology
Ram Krishna Hona, Alexa D. Azure, Mandy Guinn, Uttam S. Phuyal, Kianna Stroh, Arjun K. Thapa
Summary: Ternary glassy electrolytes containing K2S and P2S5 were synthesized, and unprecedented ambient temperature K+ ion conductivity was achieved by introducing potassium triflate (KOTf). Electrochemical impedance spectroscopy and Raman spectroscopy were used to study the ionic conductivity and structural units of the glassy electrolytes.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Anjan Chakraborty, Raghunayakula Thirupathi, Sandipan Bhattacharyya, Kushal Singh, Shobit Omar
Summary: Designing high sodium-ion conducting solid electrolytes is crucial for solid-state sodium-ion batteries. This study investigates the doping of earth-abundant divalent Mg2+ in a NASICON-type compound to enhance conductivity. The optimal composition shows significantly improved conductivity, and the electrochemical performance of solid-state batteries with optimized solid electrolyte is evaluated, demonstrating promising potential for rechargeable solid-state batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
M. Dinachandra Singh, Anshuman Dalvi
Summary: X-ray photoelectron spectroscopy (XPS) is used to study the ion transport mechanism in Li+ and Na+ ion based solid polymer electrolytes. Results show that for high NASICON content, ions decouple from polymer chains and prefer NASICON surface/bulk states for electrical transport.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Li Yang, Qing Liu, Hang Ma, Qi An, Xiaofeng Wang, Yuqing Ding, Zhiyuan Mei, Xuelin Sheng, Lingyan Duan, Jiyang Xie, Hong Guo
Summary: Polymer electrolyte-based solid-state lithium metal batteries can increase energy density and address safety issues. However, polymer electrolytes have low lithium ion migration and weak mechanical strength. Therefore, it is crucial to search for functional fillers to enhance their performance.
ENERGY STORAGE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Lanlan Yang, Chaoran Yang, Yawei Chen, Zhichen Pu, Zhenzhen Zhang, Yulin Jie, Xiang Zheng, Yunlong Xiao, Shuhong Jiao, Qi Li, Dongsheng Xu
Summary: The newly developed hybrid electrolyte MACT in DME exhibits excellent electrochemical performance, promoting fast magnesium kinetics and favorable thermodynamics, accelerating mass transport and charge transfer processes, greatly enhancing the rate capability of the full cell.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Ravindra Kumar Bhardwaj, Aninda J. Bhattacharyya
Summary: The study explores various combinations of magnesium bis (hexamethyldisilazide) with aluminum chloride or magnesium chloride in a solvent mixture of 1,3-dioxalane and 1,2-dimethoxyethane as alternative electrolytes for Mg-sulfur batteries. The DOL/DME solvent exhibits higher current response compared to tetraglyme and THF solvent-based electrolytes, with exemplary plating/stripping efficiency observed at room temperature strongly dependent on salt concentrations. The remarkable stripping/plating reversibility in a Mg parallel to Mg symmetric cell indicates the exceptional compatibility of the electrolyte with the Mg anode.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
T. S. Soliman, M. M. Hessien, E. Sheha
Summary: A new halogen-free electrolyte and a unique solid polymer interface have been successfully synthesized and designed to enhance the performance of magnesium batteries. The electrolytes exhibited good Mg plating/stripping performance, high anodic stability, and high ionic conductivity, while the Mg-BSTO battery showed promising initial discharge and charge capacities.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Jingfeng Zheng, Luke Schkeryantz, Gerald Gourdin, Lei Qin, Yiying Wu
Summary: Potassium batteries have attracted considerable attention from researchers, with traditional liquid electrolytes raising safety concerns. A new single potassium-ion conducting polymer, KPSTFSA, was synthesized to address this issue, showing high ionic conductivity and potassium ion transference number compared to traditional electrolytes. The electrochemical stability of the polymer gel electrolyte was studied systematically, revealing the instability of the polystyrene structure of KPSTFSA.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Saeed Hadad, Mahtab Hamrahjoo, Elham Dehghani, Mehdi Salami-Kalajahi, Svetlana N. Eliseeva, Amir Rezvani Moghaddam, Hossein Roghani-Mamaqani
Summary: Starch-based electrolytes are used to achieve safe and eco-friendly lithium ion batteries. The obtained electrolytes show high ionic conductivity, wide electrochemical stability, stable cyclic performance, and good electrode/electrolyte compatibility, making them a unique alternative to liquid electrolytes in LIB.
Article
Polymer Science
M. I. H. Sohaimy, M. I. N. Isa
Summary: In this study, CMC-AFT biopolymer electrolytes system was developed to investigate the effect of AFT on the biopolymer-salt system. The addition of AFT disrupted the crystalline structure of CMC and enhanced the ionic conductivity of the biopolymer electrolytes.
Review
Chemistry, Physical
Siva Moorthy, Gandhimathi Sivasubramanian, Dinakaran Kannaiyan, Paradesi Deivanayagam
Summary: The world's reliance on hydrocarbon fuel has become the main source of energy production, but the emissions from its extraction and utilization pose a significant threat to the environment and human life. In search of green energy solutions, polymer electrolyte membrane fuel cells (PEMFCs) have emerged as promising clean energy producers. Researchers have recently focused on high-temperature polymer electrolytes based on polybenzimidazole (PBI) due to their chemical and thermal stability, as well as their ability to control proton mobility through fillers. This review summarizes the advancements made by various researchers in addressing the limitations of PBI-based polymer electrolyte membranes in high-temperature PEMFCs, including structural modifications such as phase inversion, semi-interpenetrating IPNs, branched blocks, as well as physical modification methods like crosslinking, blending, and doping. © 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Computer Science, Artificial Intelligence
S. R. Balaji, S. Karthikeyan, R. Manikandan
Summary: Object detection in video sequences is a challenging task due to various issues like occlusion, fast movements, shadows, and poor lighting. Traditional methods often struggle to overcome these problems, leading to the exploration of metaheuristic algorithms. This study focuses on the detection of volleyball players in practice sessions using metaheuristic algorithms, with the Cuckoo Search Algorithm shown to be the most suitable for this application.
JOURNAL OF AMBIENT INTELLIGENCE AND HUMANIZED COMPUTING
(2021)
Article
Polymer Science
Sujeet K. Chaurasia, Atul K. Sharma, Pramod K. Singh, Li Lu, Jiangfeng Ni, Serguei Savilov, Alexey Kuznetsov, Anji R. Polu, Abhijeet Singh, Manoj K. Singh
Summary: A quasi-solid-state supercapacitor using a biodegradable gel polymer electrolyte and graphene nano-platelets electrodes is fabricated. The synthesized gel polymer electrolyte shows high ionic conductivity and electrochemical stability, resulting in excellent capacitance and power performance of the supercapacitor.
HIGH PERFORMANCE POLYMERS
(2022)
Article
Polymer Science
Anji Reddy Polu, Pramod K. Singh, P. Siva Kumar, Girish M. Joshi, T. Ramesh, I. M. Noor, Aysh Y. Madkhli, Sunanda Kakroo
Summary: In this study, ion conducting solid polymer electrolyte films based on polymer poly(ethylene oxide) (PEO) were synthesized using anhydrous acetonitrile as solvent. The introduction of ionic liquid resulted in changes in physicochemical properties of these electrolyte films, including decreased crystallinity and melting points, and increased ionic conductivity. The optimized composition showed good electrochemical stability window at ambient temperature, making it a potential separator in Li-ion batteries.
HIGH PERFORMANCE POLYMERS
(2023)
Article
Polymer Science
Noor M. Ali, Aseel A. Kareem, Anji Reddy Polu
Summary: Copper-ion conducting gel polymer electrolyte (GPE) systems based on poly(vinyl alcohol) (PVA) and copper sulphate salt doped with glycerin as plasticizer were successfully synthesized using solution casting technique. The addition of glycerin as a plasticizer in the polymer electrolyte led to a decrease in the values of melting temperature, glass transition temperature, and percentage of crystallinity. The thermal degradation of the glycerin doped polymer electrolyte occurred at lower temperatures compared to pristine PVA, and the weight loss of the polymer electrolyte increased with increasing glycerin concentration. The maximum ionic conductivity obtained was 9.39 x 10(- 4) S/cm for PVA + 20 wt% CuSO4 + 3 mL glycerin gel polymer electrolyte.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
T. Ramesh, B. Sravanthi, Kiran Kumar Ganta, K. Praveena, J. Naga Vishnu Vardhan, Anji Reddy Polu
Summary: Multidoped Ni-Al ferrites with tailored magnetic and dielectric properties were successfully synthesized and characterized, showing excellent thermal stability and performance for high-power microwave devices operating at high frequencies. The thermal stability of magnetization and insertion loss properties initially increase with Al3+ concentration, peak at x = 0.5, and then decrease with further Al3+ concentration increase.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Composites
Aseel A. Kareem, Hussein Kh Rasheed, Anji R. Polu
Summary: This paper investigates the effects of phosphoric acid molarity on the properties of polyimide/polyaniline nanocomposites. The experimental results show that with the increase of phosphoric acid molarity, the glass transition temperature of the nanocomposites decreases, while the flexibility, flexural strength, and modulus decrease and the elongation at break increases. In addition, the dielectric constant decreases and the ionic conductivity increases after the addition of phosphoric acid.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Electrochemistry
Anji Reddy Polu, Aseel A. Kareem, Hussein Kh Rasheed
Summary: In this study, solid polymer electrolytes (SPEs) based on polymer poly(ethylene oxide) (PEO) were synthesized and characterized. The electrolytes showed high thermal stability, high ionic conductivity, and were suitable for use as separators in solid-state Li-ion batteries (LIBs).
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Article
Materials Science, Composites
Aseel A. Kareem, Anji Reddy Polu, Hussein Kh. Rasheed, Thamer Alomayri
Summary: This paper presents a method for in-situ chemical synthesis of silver nanoparticles (AgNPs) embedded in poly(vinyl alcohol) (PVA) with glycerol, to synthesize PVA/AgNPs polymer nanocomposites with different volume percentages of AgNPs. X-ray diffractometer analysis showed the presence of AgNPs in the PVA films, with specific planes observed depending on the volume percentage. Fourier transform infrared spectroscopy revealed the affinity of AgNPs to the C-O-C bonds in the PVA matrix. The addition of AgNPs resulted in changes in thermal stability, electrical conductivity, and mechanical properties of the PVA/AgNPs films.
POLYMER COMPOSITES
(2023)
Proceedings Paper
Polymer Science
Thotakura Ramesh, M. Chandra Shekhar Reddy, Basireddy Sravanthi, Anjireddy Polu, P. Nageswar Rao
Summary: This study investigates the structural and magnetodielectric properties of gadolinium substituted yttrium iron garnet. The powders are prepared by hydrothermal synthesis method and sintered at different temperatures. X-ray diffraction and field emission scanning electron microscopy are used to characterize the structure and morphology of the samples. The dielectric properties are measured over a frequency range, and the magnetic properties are found to depend on the sintering temperature. Thermal change in magnetization and transition temperature are also measured.
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Surasi Kiran, Konagolla Saibaba, Thotakura Ramesh, Kollu Ashok, Anji Reddy Polu
Summary: Zinc oxide (ZnO) and zinc ferrite (ZnFe2O4) powders were synthesized using a sol-gel combustion method. The crystal structure and microstructure of the synthesized powders were studied using XRD, FTIR, and FESEM. XRD studies showed nanocrystalline hexagonal wurtzite structure for ZnO and spinel phases for ZnFe2O4. The composite samples of (x) ZnO + (1-x) ZnFe2O4 were prepared and characterized using XRD, UV-visible spectroscopy, and SEM.
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Thotakura Ramesh, Basireddy Sravanthi, Kollu Ashok, A. Bhaskar, Anji Reddy Polu
Summary: Ni0.53Cu0.12Zn0.35Fe2O4 ferrite powder was synthesized using the microwave-assisted hydrothermal technique and characterized using XRD, FTIR, and FESEM. The powder was sintered using microwave and conventional methods, and the properties of the sintered samples were compared. The study found that the sintering process has an impact on the magnetodielectric performance of ferrites, and the changes in properties were briefly reviewed.
MACROMOLECULAR SYMPOSIA
(2023)
Article
Engineering, Electrical & Electronic
Aseel A. Kareem, Hussein Kh. Rasheed, Anji Reddy Polu, Sun Theo Constan Lotebulo Ndruru, Kamil Sh. Rabadanov, Thamer Alomayri
Summary: Porous n-GaAs layers were prepared as Schottky diodes by chemically etching n-type GaAs substrates. The acid molarity was found to affect the morphological, structural, electrical, and optical properties. Analysis revealed the presence of oxygen and phosphor on the GaAs surface, as well as the formation of Ga2O3 and As2O3 compounds. Scanning electron microscopy showed evident nano-features for high acid molarities. The etched diode exhibited rectifying behavior with an ideality factor of 2.42 and a barrier height of 1.08 eV.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
A. R. Polu, V. Mekala, T. Ramesh
Summary: Solid polymer electrolyte films containing sodium acetate were prepared using the solution-cast approach. The addition of salt resulted in a lower melting point and significantly enhanced conductivity.
JOURNAL OF OPTOELECTRONIC AND BIOMEDICAL MATERIALS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Anji Reddy Polu, Pramod K. Singh
Summary: Nanocomposite polymer electrolytes (NCPE) were prepared by blending poly (ethylene oxide) (PEO) and polyhedral oligomeric silsesquioxane-functionalized with poly (ethylene glycol) (POSS-PEG) with lithium tetrafluoroborate (LiBF4). The study showed that POSS-PEG nanoparticles were highly compatible with PEO and could significantly improve the ionic conductivity. Furthermore, the stable POSS core structure enhanced the mechanical properties of polymer electrolytes.
MATERIALS TODAY-PROCEEDINGS
(2022)
Proceedings Paper
Materials Science, Multidisciplinary
Anji Reddy Polu, Pramod K. Singh
Summary: Solid polymer electrolytes (SPEs) are crucial for the safety and flexibility of rechargeable lithium-ion batteries, but their ionic conductivities are low compared to liquid electrolytes. This study aimed to increase the ion dissociation and dielectric constant of the polymer matrix by incorporating tetracyanoethylene (TCNE) and lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) into poly(ethylene oxide) (PEO). The results showed that the incorporation of TCNE and LiTFSI significantly increased the dielectric constant and ion dissociation fraction, leading to improved ionic conductivity of the SPEs.
MATERIALS TODAY-PROCEEDINGS
(2022)
