Article
Materials Science, Multidisciplinary
Fen Zhu, Xiao She, Zhanhui Zhang, Xianghua Yu, Jiayou Ji, Liang Li, Shaoping Li
Summary: In this study, flexible free-standing films with remarkable flexibility and excellent electrochemical properties were successfully prepared. These films can be used for fabricating portable and wearable supercapacitors and exhibit stable electrochemical performance even after multiple bending cycles, making them suitable for manufacturing wearable devices, portable electronics, and healthcare monitoring applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Chemistry, Physical
Yun Ki Kim, Keun-Young Shin
Summary: This study presents a concise method to fabricate PPY on flexible graphene substrate, investigates the influence of initiators on pyrrole polymerization, and explores the effects of morphological changes and doping concentrations of PPY on capacitive behaviors. The assistance of dopamine enhances the uniformity of PPY layers and improves the supercapacitor performance, demonstrating the potential for wearable energy-storage devices application.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Antonella Arena, Caterina Branca, Carmine Ciofi, Giovanna D'Angelo, Valentino Romano, Graziella Scandurra
Summary: This research focuses on developing electrochemically active conducting inks using hybrid electrodes, preparing planar supercapacitor prototypes with improved areal capacitance. Experimental results demonstrate that electrodes deposited from inks containing polypyrrole and graphene nanoplatelets significantly enhance the performance of supercapacitors.
Article
Chemistry, Physical
Guixin Wang, Nuolan Jiang, Yuxin Xu, Zhouxiong Zhang, Guiling Wang, Kui Cheng
Summary: The article introduces a design strategy of combining reduced graphene oxide (rGO), MXene, and polypyrrole (PPy) into a flexible film electrode to address the automatic stacking and poor stability issues of 2D materials. The resulting rGO/MXene-PPy composite electrode exhibits high conductivity, robust mechanical properties, and pseudocapacitance. It also shows superior rate performance, remarkable cycling stability, and high energy/power densities. This work demonstrates the potential of the prepared rGO/MXene-PPy electrodes in flexible energy storage devices.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Kai Wang, Huimin Song, Zhaoying Wang, Lei Liu, Tingxi Li, Yanmin Wang, Yongqin Han
Summary: Redox-active graphene/polypyrrole composite aerogel with well-defined 3D porous structure is prepared by one-step hydrothermal method using p-benzoquinone (BQ) and humic acid (HA) as redox-active agent and dopant. The synergistic effect of BQ and HA enables the successful ordered polymerization of pyrrole, the reduction of graphene oxide, and the effective doping effect of the composite aerogel. The constructed well-defined 3D porous structure decorated by redox-active assembly of BQ and HA boosts the fast ion diffusion and faradaic reaction, leading to superior specific capacitance and good rate capability of the GBAP-2 aerogel electrode. The assembled hybrid device shows high energy density, good cyclic and flexible stability, making it a promising candidate for flexible electronics.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Yinong Wang, Haiji Huang, Won Mook Choi
Summary: PPy@CoCH/CC composites with unique 3D hierarchical nanostructure synthesized by a simple and cost-effective hydrothermal method exhibit enhanced electrochemical performances, high specific capacitance, and good cycling performance. Additionally, symmetric supercapacitors fabricated using these composites as both positive and negative electrode deliver a high energy density at a power density of 1600 W.kg(-1).
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Glaydson Simoes dos Reis, Ravi Moreno A. Pinheiro Lima, Sylvia H. Larsson, Chandrasekar Mayandi Subramaniyam, Van Minh Dinh, Mikael Thyrel, Helinando Pequeno de Oliveira
Summary: This study developed biomass-based supercapacitors for application in advanced electronic devices with flexible structures, achieving promising results in terms of areal capacitance, energy density, power density, and cycle retention after 1000 cycles. By varying the amount of polypyrrole during its polymerization process, the competition between activated carbon and the hybrid device was controlled, showing the potential for improved performance in flexible membrane-like supercapacitors.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Quanlu Wang, Huimin Song, Wenqing Li, Shuhao Wang, Lei Liu, Tingxi Li, Yongqin Han
Summary: The polypyrrole/graphene composite aerogel prepared by a one-step hydrothermal method demonstrates excellent specific capacitance and electrochemical performance, showcasing features of high flexibility and light-weight, making it suitable for wearable and portable electronics applications.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Paper & Wood
Yang Zhan, Yang Hu, Yu Chen, Quanling Yang, Zhuqun Shi, Chuanxi Xiong
Summary: Nanocellulose has become one of the most attractive matrix materials for flexible supercapacitors, and electrode materials with high capacitance and mechanical flexibility were developed through the in-situ synthesis of polypyrrole. The resulting nanocellulose/carbon nanotube/polypyrrole hydrogels showed promising performance in the field of flexible solid-state supercapacitors.
Article
Materials Science, Multidisciplinary
Huimin Dai, Siyu Su, Yifan Cui, Yueming Lin, Liang Zhang, Xiaohong Zhu
Summary: In this study, nitrogen/sulfur co-doped reduced graphene oxide and polypyrrole composite aerogel materials were prepared and assembled into binder-free flexible electrodes. The RGP-5 sample, prepared with a mass ratio of 1:1 for graphene oxide and polypyrrole, exhibited excellent electrochemical performance with high specific capacitance and capacitance retention. The assembled RGP-5//RGP-5 flexible quasi-solid symmetric supercapacitor showed high energy density and power density, and maintained 80% capacitance after 1000 cycles of charging and discharging. The RGP-5//RGP-5 also showed good flexibility with almost unchanged specific capacitance under different bending angles.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Mingyang Lan, Zhanhui Fan, Chao Yang, Jianhui Qiu, Limin Zang
Summary: In this study, a zinc-ion hybrid capacitor (ZHC) was designed using the unique three-layer structure of a waste face mask (WFM). The WFM outer layer was uniformly covered with a layer of polypyrrole (PPy) to enhance conductivity. Electrodeposition and dopants were used to improve the electrochemical properties of the PPy. The assembled ZHC showed excellent electrochemical performance and can be widely used in reality.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Ghasem Oskueyan, Moslem Mansour Lakouraj, Mojtaba Mahyari
Summary: The study focuses on the application of polymer-carbon dots composite in supercapacitors, showcasing improved electrochemical performance through the combination of polyaniline, carbon dots, polypyrrole, and graphene. The synergistic effect of conductive polymers with graphene and carbon dots leads to higher specific capacitance and stability in the resulting supercapacitor.
Article
Energy & Fuels
Jiaming Wang, Ying Huang, Yan Gao, Jiayi Dai, Xu Sun
Summary: Carbon nanofibers (CNFs) have attracted considerable attention due to their ability to enhance the properties of materials. This paper proposes a method to enhance the electrochemical performance and flexibility of CNFs by using electrostatic self-assembly and a dipping and drying strategy. The resulting PAN@rGO@PPy electrode shows specific capacitance of 203 F g(-1) and high energy density of 15 Wh kg(-1) in a flexible supercapacitor. It also demonstrates remarkable cycling stability after 10,000 cycles. The research provides valuable insights for the development of flexible energy storage devices.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Elumalai Dhandapani, Prabhu Sengodan, Navaneethan Duraisamy, Rajendran Ramesh
Summary: Carbon quantum dots-reinforced polypyrrole composite electrodes were prepared via the hybrid electrospray method, and exhibited superior electrochemical performance in an all-solid-state asymmetric supercapacitor.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Chunlin Liu, Xuechuan Wang, Hui Jie Zhang, Xiangyu You, Ouyang Yue
Summary: Flexible energy storage materials and sensors play a crucial role in human-machine interface technology. This study focuses on the development of gelatin-based PPy hydrogel electrodes through template degradation method, resulting in enhanced electrochemical performance. The H-Gel/AS-MWCNTs-PPy electrode exhibits improved capacitance when immersed in an ammonium sulfate solution, leading to the assembly of a flexible sensor and solid-state supercapacitor with high performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Ceramics
Amun Amri, Ahmad Ainun Najib, Monita Olivia, Mohammednoor Altarawneh, Aman Syam, M. Mahbubur Rahman, Sulistyo Saputro, Johny Wahyuadi, Zhong Tao Jiang
Summary: The ratio of NaOH to GO is a crucial factor in determining the mechanical properties of geopolymers-GO composites. Excessive GO inhibits the formation of reduced graphene oxide (rGO), resulting in a decrease in compressive strength.
CERAMICS INTERNATIONAL
(2021)
Article
Fisheries
Md Javed Foysal, Farhana Momtaz, A. Q. M. Robiul Kawser, Md Hazrat Ali, Topu Raihan, Muhammad A. B. Siddik, Md Mahbubur Rahman, Alfred Tay
Summary: This study characterized the microbial communities from Vibrio-infected black tiger shrimp in Bangladesh using 16S rRNA-based amplicon sequencing. The results showed a significant decrease in alpha diversity of hepatopancreas microbiota in infected shrimp, along with changes in bacterial groups and associated gene functions. Proteobateria and Aeromonas were the dominant bacteria, and Citroibacter, Shewanella and Candidatus were found in overwhelming abundance in infected shrimp, warranting further investigation.
JOURNAL OF FISH DISEASES
(2021)
Article
Chemistry, Analytical
Saad Hayatu Girei, Mohammed Majeed Alkhabet, Yasmin Mustapha Kamil, Hong Ngee Lim, Mohd Adzir Mahdi, Mohd Hanif Yaacob
Summary: An optical fiber coated with graphene oxide was developed for monitoring ammonia absorbance response at visible and near-infrared wavelengths. The study showed better performance in the near-infrared region and high sensitivity and fast response and recovery times. Additionally, the sensor exhibited selectivity towards ammonia with no response to other gases.
Article
Chemistry, Physical
S. Vinoth, K. Subramani, Wee-Jun Ong, M. Sathish, A. Pandikumar
Summary: This work demonstrates a high-performance hybrid asymmetric supercapacitor (HASC) utilizing sulfur-doped graphitic carbon nitride/cobalt disulfide (S-gC(3)N(4)/CoS2) materials and bio-derived carbon configuration, achieving high electrochemical stability and cycling stability at very high current density, providing a new approach for the development of high-performance supercapacitors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Nusrat Jahan, Humayun Kabir, Hatem Taha, Md Kamal Hossain, M. Mahbubur Rahman, M. S. Bashar, Amun Amri, Md Abul Hossain, Farid Ahmed
Summary: This article investigated the preparation of Cu2ZnSnS4 thin film coatings with different rotational speeds, and studied their structural, morphological, and optical properties. The results showed that the coating thickness decreased and crystallite size increased with increasing rotational speed. Additionally, dielectric parameters decreased with increasing thickness of the Cu2ZnSnS4 coatings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Hasina Akther, A. H. Bhuiyan, Humayun Kabir, Rahima Nasrin, M. Mahbubur Rahman
Summary: The article presents a comprehensive analysis on vacuum deposited Iodine-doped plasma polymerized monomer N, N, 3, 5 tetramethylanilin (PPTMA) thin film coatings to comprehend the structural, morphological, chemical, optical, and electronic properties. The as-deposited PPTMA thin film coatings were characterized by various techniques, showing smooth and uniform surfaces, with unique structural and optical changes due to iodine doping. The study also revealed that the properties such as energy band gaps, refractive index, and dielectric constants were influenced by the increasing iodine content in PPTMA coatings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Polymer Science
Mahnoush Beygisangchin, Suraya Abdul Rashid, Suhaidi Shafie, Amir Reza Sadrolhosseini, Hong Ngee Lim
Summary: Polyaniline (PANI) is a well-known conductive polymer that has attracted significant attention in the field of nanotechnology. This review focuses on the preparation processes and various properties of PANI thin films, discussing its potential applications in electronics, drugs, and anti-corrosion materials. PANI's unique characteristics, such as high conductivity, easy synthesis, and environmental stability, make it a promising material for a wide range of applications.
Article
Energy & Fuels
Dina Kania, Robiah Yunus, Rozita Omar, Suraya Abdul Rashid, Badrul Mohamed Jan, Akmal Aulia
Summary: The study utilized quantum chemical calculations and mud filtration analysis to assess the performance of non-ionic surfactants as additives in synthetic-based drilling mud. Experimental results demonstrated that the non-ionic surfactants significantly reduced the coefficient of friction and improved solid dispersion in the mud, leading to a thinner mud cake. Insights from molecular electrostatic potential (MEP) and dipole moment analysis provided further understanding of the interaction between the non-ionic surfactants and metal surfaces, contributing to improved lubrication and reduced friction during drilling.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Chemistry, Physical
Mahnoush Beygisangchin, Suraya Abdul Rashid, Suhaidi Shafie, Amir Reza Sadrolhosseini
Summary: The study investigated the effects of different dopants on the synthesis, optical, electrical, and thermal properties of polyaniline. Polyaniline doped with various acids showed different bandgap values and conductivity levels. The increase in dopant size led to reduced crystallinity and increased interchain separations.
Article
Materials Science, Ceramics
Amun Amri, Yola Bertilsya Hendri, Edy Saputra, Desi Heltina, Chun-Yang Yin, M. Mahbubur Rahman, Manickam Minakshi, Nicholas Mondinos, Zhong-Tao Jiang
Summary: The formation kinetics of LiFePO4 Olivine synthesized through sol-gel route was studied using a non-isothermal approach. The results showed that temperature played a crucial role in the synthesis of LiFePO4, with an optimal calcination temperature of 700°C yielding LiFePO4 Olivine with high crystallinity, better lattice parameters, and phase purity.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
K. S. Shalini Devi, K. B. Bhojanaa, N. Pavithra, A. Pandikumar
Summary: Recently, the combination of oxide perovskites with plasmonic metal nanoparticles has been studied extensively to enhance the efficiency of dye-sensitized solar cells. However, the corrosion of metal nanoparticles with electrolyte poses a challenge. In this study, the combination of oxide perovskites with plasmonic metal nanoparticles shielded by amino silicates was explored as an alternative solution. The results showed that increasing the number of amino groups in silanes led to a decrease in band gap and an increase in voltage open-circuit and photocurrent, resulting in improved photovoltaic performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Hamed M. Hussain, Khalil Rahi, Mohammednoor Al Tarawneh, Christopher Preece
Summary: This study investigates the utilization of solar panels in houses in Abu Dhabi city and identifies the reasons and optimal scenario for their installation. By conducting a survey and analyzing the results, it is found that financial support during the installation process is the most preferred scenario. The research highlights the high interest in solar power among homeowners in Abu Dhabi.
Article
Engineering, Chemical
Mohd Hafizz Wondi, Rosnah Shamsudin, Robiah Yunus, Mohd Salahuddin Mohd Basri, Maimunah Mohd Ali, Nur Izzah Nabilah Haris
Summary: This study aims to address inefficiencies in the palm oil milling process by designing a machine that can separate mesocarp fibers from nuts before pressing, thus enhancing oil extraction and quality. Stress and deformation analysis confirms the machine's ability to withstand loads without deformation during the separation process.
JOURNAL OF FOOD PROCESS ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
H. Akther, Md Saddam Sheikh, Hussein A. Miran, Hind Adawi, M. Mahbubur Rahman
Summary: In this study, capacitively coupled AC glow plasma was used to prepare composite films with different monomer ratios. The films were found to have smooth surfaces and contain carbon, nitrogen, and oxygen. The optical properties of the films were affected by the percentage of N, N, 3, 5-tetramethylaniline in the composition, with higher percentages leading to increased thickness and optical band-gap values. The absorbance of the films also increased with higher monomer concentration.
Article
Chemistry, Multidisciplinary
Huey Jing Tan, Zulkarnain Zainal, Zainal Abidin Talib, Hong Ngee Lim, Suhaidi Shafie, Sin Tee Tan, Noor Nazihah Bahrudin
Summary: Improving the photoelectrochemical performance of cadmium sulfide (CdS) thin films through preheating treatment and their combination with zinc oxide (ZnO) enables the creation of efficient heterostructures for solar cells.
