Article
Chemistry, Physical
Sindhuja Manoharan, Parthiban Pazhamalai, Vimal Kumar Mariappan, Kalpana Murugesan, Selvasekarapandian Subramanian, Karthikeyan Krishnamoorthy, Sang-Jae Kim
Summary: The research interest in self-charging supercapacitor power cells (SCSPC) is driven by their ability to harvest, convert, and store energy in an integrated device. The use of liquid electrolytes limits efficiency, prompting the development of alternative systems. A piezo-electrolyte film composed of phosphotungstic acid (PTA) embedded in a piezoelectric PVDF matrix was developed and used in SCSPC devices, showing improved mechanical to electrical energy conversion properties and electrolyte ion supply. The experimental findings suggest a new approach for integrated SCSPC devices, with potential for next-generation energy devices.
Article
Engineering, Electrical & Electronic
Abhishek Thakur, Mandeep Jangra, Siddhartha Dam, Shamima Hussain
Summary: Flexible composite films of PVDF with GaN as fillers were synthesized using sol-gel method, and the effects of fillers on the microstructural, morphological and dielectric properties of the films were investigated.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zhuo Wang, Yanxin Li, Yinbo Li, Zhihui Yi, Menglei Kong
Summary: This study focuses on the development of flexible dielectric composite films with high energy density at low electric fields, achieved by using semiconductor nanofibers as fillers in a PVDF matrix. The addition of BiFeO3 fibers significantly improved the polarization of the composite films at low electric fields. The changes in filler content positively influenced the interfacial area, polarization, and phase composition in the composite films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Lulu Liu, Wenyi Fu, Lili Wang, Xiaobiao Shan
Summary: A solvothermal method was used to produce PVDF composite films doped with dopamine-modified nano-silica particles, which showed improved piezoelectric performance. The addition of dopamine enhanced the compatibility between nano-SiO2 and PVDF, resulting in increased piezoelectric coefficient and remnant polarization of the composite films. This work provides a promising new method for nanofabrication technology and improving the performance of piezoelectric composites.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Shiping Song, Yijun Li, Qi Wang, Chuhong Zhang
Summary: 3D printed piezoelectric devices show promise, but lack of high loaded piezoelectric composites is a key bottleneck. This work successfully developed a novel composite material and enhancement strategy for piezoelectric output through 3D structuring.
Article
Polymer Science
Kun Liu, Haijun Wang, Yao Wu, Yongxiang Wang, Chunlei Yuan
Summary: γ'-PVDF/PZT composite films with high content of γ-phase were prepared using hot-press blending, non-isothermal crystallization, coating [BMIM]BF4 on the surface of the films and annealing at high temperature. The effect of incorporating PZT on the α-to-γ' phase transformation, as well as the dielectric and ferroelectric properties of γ'-PVDF, was investigated. It was found that PZT increases the lamellar thickness of α-PVDF and promotes diffusion of [BMIM]BF4, thereby accelerating the [BMIM]BF4-assisted α-to-γ' phase transition. The γ'-PVDF/PZT composites showed a marked increase in dielectric constant and maximum polarization intensity compared to neat γ'-PVDF. This study presents a new approach for the efficient production of γ'-PVDF composite films with exceptional ferroelectric and dielectric properties.
Article
Energy & Fuels
Chanwoo Park, Bhavana Joshi, Edmund Samuel, Byeong-yeop Kim, Ali Aldalbahi, Mohamed El-Newehy, Hae-Seok Lee, Sam S. Yoon
Summary: This study presents a flexible PENG with supersonically cold-sprayed films of cobalt titanate and polyvinylidene fluoride. The PENG exhibits excellent mechanical durability and generates high voltage and current output during tapping and bending tests.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Mikel J. Zaitzeff, Lori J. Groven
Summary: Poly(vinylidene fluoride) (PVDF) exhibits piezoelectricity in its crystalline B-phase, where a voltage can be generated from uniform stress or strain. Current techniques for crystallizing PVDF into the B-phase typically result in films or fibers, with few methods producing B-phase particles. This study presents a method for precipitating nano-sized B-phase PVDF particles (<100 nm) from a solution using commercially available materials. These particles have the potential to improve electrical and mechanical properties when used as inclusions in composite materials, and the method offers a potential route for controlling the phase and size of PVDF particles for specific applications.
Article
Chemistry, Multidisciplinary
Bhavna Hedau, Byeong-Cheol Kang, Tae-Jun Ha
Summary: By fabricating MoS2@PVDF hybrid nanocomposite films, this study successfully improved the output performance of TENGs. The incorporation of MoS2 and postannealing were found to promote the formation of the β-crystal phase and generate polarity in PVDF, resulting in enhanced charge capture capacity and potential difference of TENGs.
Article
Polymer Science
Alexey Tsyganov, Maria Vikulova, Denis Artyukhov, Alexey Bainyashev, Vladimir Goffman, Alexander Gorokhovsky, Elena Boychenko, Igor Burmistrov, Nikolay Gorshkov
Summary: New three-phase composites, consisting of a polymer matrix (PVDF) filled with hollandite-like ceramics (KFTO(H)) and carbon additives (MWCNT), were synthesized and studied for their potential application as dielectrics in flexible electronics. The optimal combination of 30 vol.% K1.6Fe1.6Ti6.4O16 ceramics and 1.0 wt.% MWCNTs exhibited the highest permittivity (77.6) and lowest dielectric loss (0.104) at 1 kHz.
Article
Chemistry, Analytical
Mingran Liu, Yang Liu, Limin Zhou
Summary: In this paper, a novel flexible pressure sensor with high sensitivity was developed by improving the beta-phase crystallinity and piezoelectricity of the PVDF-TrFE membranes. The addition of ZnO nanofillers and the annealing process significantly increased the sensitivity of the prototype sensor, showing great potential for healthcare device applications.
Article
Materials Science, Multidisciplinary
Shiqing Zhao, Xu Gao, Linsen Chen, Wenbin Huang, Yanhua Liu
Summary: This study proposes a tri-layered self-powered electrochromic window with a magnesium anode and an ammonium persulfate cathode to achieve controllable self-coloration and self-bleaching processes. The window exhibits rapid coloring and bleaching times, high optical contrast, long cycling durability, and the ability to illuminate a red LED for 2 hours. A prototype device was also developed for large-area applications.
APPLIED MATERIALS TODAY
(2022)
Article
Chemistry, Physical
Yinan Zhao, Qingtao Zeng, Changcheng Jiang, Xuejun Lai, Hongqiang Li, Zhengzhong Wu, Xingrong Zeng
Summary: This study presents a significant advancement in the construction of self-powered fire protection materials through the use of phosphorous-containing ionic liquids to fabricate ionogels. The produced ionogels exhibit good ionic conductivity and thermoelectric effect, enabling temperature sensing, sensitive fire warning, and excellent flame retardancy. Additionally, the ionogels demonstrate high durability and self-powering capabilities, making them suitable for powering fire warning circuits and electronics.
Article
Polymer Science
Mai M. M. El-Masry
Summary: This article presents the synthesis and characterization of Ag-CuO/rGO nanoparticles as a filler for PVDF polymer to enhance its polar beta phase and electrical conductivity, for potential use in polymer batteries. Ag-CuO/rGO nanoparticles were prepared through hydrothermal method and incorporated into PVDF matrix using solution casting. Various techniques were employed to examine the structure, crystallinity, dielectric, and electrical properties of the PVDF/Ag-CuO/rGO nanocomposites. The results showed that the incorporation of Ag-CuO/rGO nanoparticles promoted the formation of polar beta phase of PVDF, leading to higher dielectric constant and lower dielectric loss compared to pure PVDF.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Chemistry, Physical
Mingtao Li, Yuanzheng Zhang, Hao Wang, Feng Wang, Liuyang Liang, Xiaobing Wang, Yongqiu Li, Yonghui Wu, Xiong Pu, Haiwu Zheng
Summary: The paper proposes a new method to fabricate an all-in-one self-charging system by integrating a TENG and a dielectric capacitor made from PVDF-HFP membrane. The system exhibits excellent output performance and is capable of generating high-voltage pulse output, which is of significant importance for the integration and miniaturization of the A-SCSs.
Article
Chemistry, Multidisciplinary
Prosenjit Biswas, Nur Amin Hoque, Pradip Thakur, Md Minarul Saikh, Swagata Roy, Farha Khatun, Biswajoy Bagchi, Sukhen Das
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
Farha Khatun, Pradip Thakur, Arpan Kool, Swagata Roy, Nur Amin Hoque, Prosenjit Biswas, Biswajoy Bagchi, Sukhen Das
Article
Polymer Science
Swagata Roy, Pradip Thakur, Nur Amin Hoque, Arpan Kool, Farha Khatun, Prosenjit Biswas, Biswajoy Bagchi, Sukhen Das
Article
Physics, Applied
Farha Khatun, Pradip Thakur, Biswajoy Bagchi, Sukhen Das
APPLIED PHYSICS LETTERS
(2019)
Article
Physics, Applied
Ujjwal Rajak, Farha Khatun, Prosenjit Biswas, Pradip Thakur
Summary: The developed piezoelectric nanogenerator using kaolinite exhibits high sensitivity, able to generate electrical signals from small mechanical impulses caused by human body vibration, air flow, and water wave. It shows stable performance over long-term testing with high power density.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Md Minarul Saikh, Nur Amin Hoque, Prosenjit Biswas, Wahida Rahman, Namrata Das, Sukhen Das, Pradip Thakur
Summary: Piezoelectric nanogenerators (PENGs) and single-electrode triboelectric nanogenerator (STENG) show excellent output performance, high power density, energy efficiency, and durability in ZrO2/PVDF-HFP nanocomposite polymer, demonstrating promising applications for energy harvesting in low-power electronic devices.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Sanoar Molla, Farha Khatun, Pradip Thakur
Summary: A low-cost and bio-compatible photo-induced K-ion-based power cell has been developed, showing a maximum open circuit voltage of around 1V under light intensity of 110 mW/cm(2). The cell demonstrated a storage capacity of approximately 16 F/m(2) with energy density and power density of around 2.22 mWh/m(2) and 5 W/m(2) respectively. Additionally, a commercially available LED was successfully powered by this fabricated power cell, demonstrating its practical application possibilities.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Debmalya Sarkar, Namrata Das, Md Minarul Saikh, Prosenjit Biswas, Solanky Das, Sukhen Das, Nur Amin Hoque, Ruma Basu
Summary: This study discusses the fabrication and application of a piezoelectric nanogenerator (SPENG) using SA fibers and PDMS, with high output performance. The SPENG is capable of converting biomechanical energy into electrical energy, quickly charging a capacitor and illuminating LED lights, making it suitable for powering portable electronic devices.
Article
Multidisciplinary Sciences
Sanoar Molla, Farha Khatun, Ujjwal Rajak, Biswajoy Bagchi, Sukhen Das, Pradip Thakur
Summary: In this research, an electroactive polymer based photo-induced hybrid power cell was developed using a CTAB/PVDF composite film. The cell exhibited good performance and high energy storage capability.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Kequan Xia, Di Wu, Jiangming Fu, Nur Amin Hoque, Ying Ye, Zhiwei Xu
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Materials Science, Biomaterials
Somtirtha Banerjee, Biswajoy Bagchi, Kunal Pal, Suman Bhandary, Arpan Kool, Nur Amin Hoque, Prosenjit Biswas, Pradip Thakur, Kaustuv Das, Parimal Karmakar, Sukhen Das
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2020)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)
