Article
Engineering, Electrical & Electronic
Subhrajit Konwar, Pramod K. Singh, Pawan Dhapola, Abhimanyu Singh, Serguei V. Savilov, Muhd Zu Azhan Yahya, Sirin Siyahjani Gultekin, Burak Gultekin
Summary: This paper deals with the synthesis, characterization, and application of low-viscosity ionic liquids as dopants and biopolymers as the host. The ionic liquid enhances the ionic conductivity and thermal stability of the biopolymer electrolyte, leading to the development of highly conducting ionic-liquid-doped biopolymer electrolyte-based devices such as electrochemical double-layer capacitors and dye-sensitized solar cells.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Polymer Science
Noriah Abdul Rahman, Sharina Abu Hanifah, Nadhratun Naiim Mobarak, Azizan Ahmad, Norasikin Ahmad Ludin, Federico Bella, Mohd Sukor Su'ait
Summary: Biopolymers, specifically chitosan, loaded with NaI salt are explored as a solid polymer electrolyte for dye sensitised solar cells. The chitosan-NaI electrolyte shows promising interactions, weakening chitosan's semi-crystalline domains and enhancing the conduction of redox shuttle ions. The solid-state electrolyte exhibits high ionic conductivity and stable power conversion efficiency for photovoltaic devices.
Article
Electrochemistry
F. N. Jumaah, N. M. Mustafa, N. N. Mobarak, N. H. Hassan, S. A. M. Noor, N. A. Ludin, K. H. Badri, A. Ahmad, M. Yoshizawa-Fujita, M. S. Su'ait
Summary: Conventional ionic liquids have been widely used in various applications due to their unique properties and significant potential. In this preliminary study, a bio-based quaternary ammonium salt (QAS) ionic liquid crystals (ILC) was synthesized using lauric acid as an alternative and renewable feedstock. The chemical structure, ionic conductivity, and solid-solid transitions of the ILC were investigated. The findings suggest that the bio-based QAS has promising potential as an electrolyte for dye-sensitized solar cells.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Elham Aram, Hanieh Shaki, Morteza Ehsani
Summary: High-performance gel polymer electrolytes based on PEO/PMMA incorporating different weight percentage of GO nanosheets were prepared, and the addition of GO increased the ionic conductivity and thermal properties of the electrolytes. The optimized polymer gel electrolyte, containing 1 wt% GO, showed a higher photon conversion efficiency of 6.98%, compared to the neat PEO/PMMA gel electrolyte (4.92%). The presence of GO also increased the charge recombination resistance and long-term stability of the gel electrolyte.
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
Green & Sustainable Science & Technology
M. Bonomo, A. Y. Segura Zarate, L. Fagiolari, A. Damin, S. Galliano, C. Gerbaldi, F. Bella, C. Barolo
Summary: In this study, electrochemical impedance spectroscopy is used to compare liquid and polymeric aqueous dye-sensitized solar cells (a-DSSCs) with conventional organic solvent-based devices. The results reveal two unique features in the electrochemical impedance spectroscopy spectra of a-DSSCs that are not observed in organic-based DSSCs. These features are related to the diffusion kinetics of the redox mediator and the breakdown at the semiconductor/FTO interface, which affect the efficiency of the water-based photovoltaics. The findings suggest that tailored equivalent circuits incorporating these features are currently under investigation.
MATERIALS TODAY SUSTAINABILITY
(2023)
Article
Materials Science, Multidisciplinary
Chiam-Wen Liew, T. T. Nguyen, A. K. Arof, H. K. Jun
Summary: A liquid electrolyte based on LiBOB polymer was prepared for DSSCs, and its performance was optimized with varying additives, with the inclusion of PMII ionic liquid showing the best results. The study explored the effect and significance of different additives on the DSSC performance.
MATERIALS TECHNOLOGY
(2022)
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
Chemistry, Inorganic & Nuclear
Mahesh Kumar Ghosh, Rabindra Kumar Send, Prasanta Kumar Mahapatra, Binod Bihari Panda
Summary: The photoelectrochemical performance of DSSCs based on natural extracted chlorophyll-a dye sensitised Zn-Cd-S thin film semiconductor electrodes was studied. The nanocrystalline Zn-Cd-S thin films were characterized and found to have a crystal size of approximately 6.6 nm and an optical band gap energy of approximately 2.9 eV. The DSSC using a 6-hour chlorophyll-a dye loaded Zn-Cd-S thin film showed a high optical to electrical energy conversion efficiency of 0.988% with a fill factor of 52%.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
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
Chemistry, Analytical
Celine Chia Qi Wong, Austin Yuhang Yap, Chiam-Wen Liew
Summary: The addition of ionic liquid BmImBr significantly improves the ionic conductivity of PVA-LiTf polymer electrolytes, exhibiting compliance with the Arrhenius theory and a decrease in glass transition temperature. Fourier-Transform Infrared studies reveal complexation between PVA, LiTf, and BmImBr.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
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
Materials Science, Composites
Jaspreet Kaur, Jitender Paul Sharma, Narveer Singh, Dinesh Pathak, Neelam Guleria, Pramod Kumar Singh, Praveen Kumar Sharma
Summary: Polymer blends have attracted considerable attention for their potential optoelectronic and photonic applications due to advantages such as easy processing, low cost, flexibility, and good mechanical properties. This study investigates the structure and optical properties of binary blends of poly (methyl methacrylate) (PMMA) and poly (vinyl carbazole) (PVK). The results show changes in the structure of PMMA and optical absorption and emission properties with varying PVK content. These findings are important for developing new optoelectronic functionalities in polymer blends.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Plant Sciences
Manish Kumar Dubey, Mohd Aamir, Andleep Zehra, Mukesh Yadav, Punam Kumari, Milind H. Gajbhiye, Ram Sanmukh Upadhyay
Summary: In this study, a plant pathogenic isolate causing root rot symptoms in bean seedlings was identified and characterized. It was confirmed as Pythium catenulatum using molecular data and gene annotation. The isolate showed diverse carbon utilization and was effectively inhibited by agrochemicals and certain microbial strains in vitro. The study provides a sustainable, effective, and eco-friendly solution for controlling root rot pathogens.
JOURNAL OF PHYTOPATHOLOGY
(2023)
Article
Multidisciplinary Sciences
Andleeb Zehra, Mohd Aamir, Manish K. Dubey, Waquar Akhtar Ansari, Mukesh Meena, Prashant Swapnil, R. S. Upadhyay, Mohammad Ajmal Ali, Abdullah Ahmed Al-Ghamdi, Joongku Lee
Summary: The study demonstrated that priming tomato plants with Trichoderma harzianum enhances their resistance against the pathogen Fusarium oxysporum. This effect is accompanied by increased antioxidative enzyme activities and up-regulation of defense-related genes. These findings contribute to a better understanding of the impact of microbial priming on plant immune response.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Microbiology
Mukesh Yadav, Kumari Divyanshu, Manish Kumar Dubey, Ashutosh Rai, Sunil Kumar, Yashoda Nandan Tripathi, Vaishali Shukla, Ram Sanmukh Upadhyay
Summary: This study assessed Trichoderma asperellum and T. harzianum as potential biological control against Colletotrichum truncatum. The scanning electron microscope technique showed the beneficial interaction between chilli root-Trichoderma spp., promoting plant growth, mechanical barrier, and defense network against C. truncatum.
Proceedings Paper
Polymer Science
Rana Pratap, Abhimanyu Singh, Ram Chandra Singh, Manoj K. Singh, Mustafa A. Alheety, Ftema W. Aldbea, A. S. Samsudin, Pramod K. Singh
Summary: NH4ClO4 exhibits high ionic conductivity of approximately 10-5 Scm(-1) with H+ ions as the probable charge carrying mobile species along with the anion ClO4-. The H+ ions can originate from either the -CH2-CH2- of the PEO polymer chain or the NH4+ of the complexing salt. A wide-line NMR study was conducted to identify the mobile H+ species and investigate its dynamics at different temperatures. It was found that the two types of H+ species exhibit different temperature dependence of NMR linewidths, and the H+ species belonging to NH4+ cation predominantly contributes to the room temperature conductivity.
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Kailash Kumar, Kushal Mehrotra, Ashish Raj, Shri Prakash Pandey, Bhaskar Bhattacharya
Summary: In this paper, a systematic study on the electrical and dielectric properties of a polymer electrolyte at different humidity levels is reported. The polymer electrolyte used is based on Polyvinyl Alcohol (PVA) with potassium iodide (KI) as the dopant salt. The conductivity of the films is determined using electrical impedance spectroscopy (EIS) at three different humidity levels: 55%, 75%, and 85%. The highest conductivity is observed at 85% humidity level, with the 75:25 composition of PVA:KI showing the optimum ionic conductivity of 1.25x10(-4) S cm(-1).
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Bharti Sangwan, Sushant Kumar, Abhimanyu Singh, S. P. Pandey, Pramod K. Singh, Ram Chandra Singh, Richa Tomar
Summary: Due to increasing energy demand, an alternate source of energy is necessary. This can be achieved through solar cells, with dye sensitized solar cells (DSSC) being a low-cost alternative to costly crystalline solar cells. The efficiency of DSSC is improved by using polymer electrolyte, specifically PVA based solid polymer electrolyte, due to properties such as good ionic conductivity and thin film forming ability. Modifications such as the incorporation of nanosized fillers and the formation of conducting polymer electrolyte further enhance the efficiency and ionic conductivity of DSSC.
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Manish Kumar, Arvind Kumar, Abhishek Raj, Pramod Kr. Singh, Avneesh Anshul
Summary: The organic-inorganic metal halide-based perovskite solar cell (PSC) is continuously improving. Recent efforts from different researchers, both experimental and theoretical, have been made to enhance the device performance and stability. In this study, a MAPbI3-based PSC device was simulated to investigate its behavior with variations in the absorber's band-gap and series resistance. It was found that the simulated device exhibited a superior power conversion efficiency (PCE) of 25.76% at a band-gap of 1.3 eV. The device performance was also influenced by changes in the series resistance, with the best response observed under lower resistance. Moreover, the change in quantum efficiency (QE) with variations in the series resistance was also analyzed.
MACROMOLECULAR SYMPOSIA
(2023)
Proceedings Paper
Polymer Science
Vinay Kumar, Pranav Kumar, B. Bhattacharya, Mustafa A. Alheety, Ibrahim Zakariya'u, Pawan Kumar
Summary: The chemical bath method is used to grow lead sulfide nanoparticles in a methanolic solution of Pb(NO3)2, and sulfur exchange is achieved through the controlled reaction of Na2S. The optical absorption of the obtained colloidal solution is studied. The prepared particles are characterized by UV/Visible absorption spectra, and the energy band gaps are calculated based on assuming the same effective masses of electrons and holes in the nanoparticles as in bulk. The particle size is determined using theoretical approaches. It is found that the band gap of the compound gradually increases as the particle size decreases without using any capping agent.
MACROMOLECULAR SYMPOSIA
(2023)
Article
Chemistry, Physical
Pooja Kalra, Karan Surana, Bhaskar Bhattacharya, Gurjaspreet Singh, Geeta Durga
Summary: A novel architecture of a Dye Sensitized Solar Cell (DSSC) was proposed, in which the photo-anodic layer of mesoporous TiO2 was co-sensitized with Carbon QD and a novel perylene diimide sensitizer with silatrane anchor group. The structure of the synthesized silatrane-ended perylene diimide was characterized and optimized using spectroscopic techniques and theoretical calculations. The fabricated DSSC showed an eleven-fold increase in efficiency compared to the solar cell sensitized with only the perylene diimide dye, indicating the synergistic interaction of Carbon QD and perylene diimide dye. This co-sensitization setup may open up new avenues in the field of sensitized solar cells.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Review
Green & Sustainable Science & Technology
Beenu Raj, Jitin Rahul, Pramod K. Singh, Velidandi V. L. Kanta Rao, Jagdish Kumar, Neetu Dwivedi, Pravita Kumar, Diksha Singh, Karol Strzalkowski
Summary: This article provides an overview of the importance of recycling PET waste for reducing environmental impact, conserving resources, creating jobs, and combating plastic pollution. It highlights various initiatives and regulations implemented by countries, such as extended producer responsibility systems and deposit-return systems, to encourage PET recycling. The article emphasizes the versatility of recycled PET and the need for collaboration among governments, industries, and individuals in promoting sustainable waste management practices.
Article
Plant Sciences
Mohd Aamir, V. Shanmugam, Manish Kumar Dubey, Fohad Mabood Husain, Mohd Adil, Waquar Akhter Ansari, Ashutosh Rai, Pankaj Sah
Summary: In this study, the complex interaction between Trichoderma and the tomato genome was investigated, revealing transcriptional and metabolic changes triggered by Trichoderma colonization. Gene expression profile analysis identified differentially expressed significant genes, showing a positive correlation between the host and Trichoderma. Several genes were found to be consistently significant, with some showing upregulated expression and others downregulated expression during Trichoderma-tomato interaction. Transcription factors related to systemic defense and flowering were also differentially expressed. Protein-protein interaction network analysis and Weighted Correlation Gene Network Analysis further revealed the genes associated with carbohydrate metabolism, secondary metabolite biosynthesis, and nitrogen metabolism. Overall, this study highlights the importance of Trichoderma-induced microbial priming in reprogramming the host genome for transcriptional response and understanding the complex regulatory networks in beneficial microbial interactions.
Review
Plant Sciences
Mahima Kaushik, Jyoti Yadav, Anuradha Singh, Manish Kumar Dubey
Summary: Mosquitoes are one of the most threatening vectors in public health, transmitting deadly pathogens and parasites that cause millions of deaths worldwide each year. Synthetic mosquito repellents have become ineffective and harmful to the ecosystem, leading to the need for natural alternatives. Ancient texts mention several plant genera with mosquito-repellent properties, and their essential oils and extracts have been used traditionally for personal protection against mosquitoes.
INDIAN JOURNAL OF NATURAL PRODUCTS AND RESOURCES
(2023)
Review
Food Science & Technology
Goyal Archana, Shukla Gaurav, Mishra Shruti, Mallik Sarita, Singh Anuradha, Dubey Manish Kumar
Summary: This article provides an overview of the brewing process and discusses how to enhance the quality and flavor of commercial beer production. It also highlights current research progress and potential applications in cost-effective beer production.
JOURNAL OF MICROBIOLOGY BIOTECHNOLOGY AND FOOD SCIENCES
(2023)
