Article
Chemistry, Physical
Yuxuan Zhang, Chung Soo Kim, Han Wook Song, Sung-Jin Chang, Hyeonghun Kim, Jeongmin Park, Shan Hu, Kejie Zhao, Sunghwan Lee
Summary: This study presents a cathode tailoring strategy that enhances the energy density and lifespan of lithium-ion batteries. By using gas phase polymerization technique, an oCVD PEDOT coating is applied to reduce inactive materials and increase the active material content in the cathode, resulting in significantly higher capacity retention. The formation of cathode electrolyte inter phases is eliminated, ensuring high-performance and safe batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Qiang Liu, Yu-Tong Liu, Chen Zhao, Qing-Song Weng, Junjinng Deng, Inhui Hwang, Yi Jiang, Chengjun Sun, Tianyi Li, Wenqian Xu, Ke Du, Amine Daali, Gui-Liang Xu, Khalil Amine, Guohua Chen
Summary: This article presents an ultraconformal and durable poly(3,4-ethylenedioxythiophene) (PEDOT) coating for single-crystal Ni-rich cathodes to enhance their stability under high voltage and high temperature conditions. The coated cathode demonstrates excellent cycling stability and capacity retention rate, as well as inhibiting electrolyte corrosion.
Article
Materials Science, Paper & Wood
Junze Zhang, Jing Liu, Zeyu Zhao, Di Huang, Chao Chen, Zhaozhu Zheng, Chenxi Fu, Xiaoqin Wang, Yanxue Ma, Yuling Li, Zekun Liu, Yi Li, Gang Li
Summary: In this paper, we report the fabrication of a graphene-coated Calotropis gigantea yarn through pad dyeing with graphene oxide. The modified yarns exhibit high conductivity, outstanding conducting stability, and the capability of large-scale production.
Article
Engineering, Environmental
Peng Wang, Mingxu Wang, Jiadeng Zhu, Yuhang Wang, Jiefeng Gao, Chunxia Gao, Qiang Gao
Summary: Inspired by spider's fluff, an ion-induced self-assembly method was proposed to fabricate PEDOT: PSS fibers with array microstructure, possessing high specific surface area, good pressure sensitivity, and fast response time for applications in airflow detection, real-time information transmission, and gravity/pressure sensing.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Daniel E. Camacho, Armando Encinas
Summary: The proposed method involves using conductive paint to create a continuous coating on natural Jute fibers, resulting in electrically conductive and flexible fibers. These fibers are easy to produce, cost-effective, and can be used in various applications such as flexible conductors, responsive materials, smart textiles, and electromagnetic shielding covers.
Article
Nanoscience & Nanotechnology
Yanping Chen, Jie Meng, Yiman Xu, Yaogang Li, Qinghong Zhang, Chengyi Hou, Hengda Sun, Gang Wang, Hongzhi Wang
Summary: In this study, an integrated ionic-additive assisted wet-spinning strategy was used to improve the conductivity and stretchability of PEDOT:PSS fiber, resulting in a fiber with extremely high conductivity and 30% stretchability. Additionally, an all-solid-state fibrous organic electrochemical transistor (OECT) device with a transconductance of 2.44 mS was fabricated based on this fiber.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Analytical
Tianyu Li, Zhichao Ye, Yu Cai, Tingting Tu, Bin Zhang, Shanshan Zhang, Lu Fang, Xiyu Mao, Shiyi Xu, Xuesong Ye, Bo Liang
Summary: This study successfully achieved better and stable attachment between conductive hydrogel and electrode through surface rebuilding technique, leading to the development of sensors for various electrochemical sensing applications. The sensors exhibited high sensitivity and good linear range for detecting H2O2, glucose, dopamine, and L-Dopa.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Polymer Science
Shih-Chieh Hsu, Kuan-Syun Wang, Yan-Ting Lin, Jen-Hsien Huang, Nian-Jheng Wu, Jia-Lin Kang, Huei-Chu Weng, Ting-Yu Liu
Summary: Li3VO4 (LVO) is a highly promising anode material for lithium-ion batteries, but its poor rate capability due to low electronic conductivity poses a significant challenge. To improve the kinetics of lithium ion insertion and extraction, a conductive polymer called PEDOT:PSS is applied to coat the surface of LVO, enhancing its electrochemical properties. The resulting PEDOT:PSS-decorated LVO (P-LVO) exhibits higher capacity and better cycling stability, making it a great candidate for energy storage applications.
Article
Metallurgy & Metallurgical Engineering
Tao Li, Zhongjun Leng, Shifang Wang, Xitao Wang, Reza Ghomashchi, Yuansheng Yang, Jixue Zhou
Summary: In this study, a phosphate conversion coating was prepared on a magnesium alloy by pre-activating it with phosphoric acid, oxalic acid, and colloidal Ti. The coating pre-activated by phosphoric acid showed the best corrosion resistance.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Qiang Gao, Yuhang Wang, Peng Wang, Ming Shen, Tangsuo Li, Chunxia Gao, Jiadeng Zhu
Summary: Highly conductive and stretchable PEDOT:PSS fibers were successfully achieved by incorporating urea and soluble copper salts, which not only enhanced their electroconductivity and stretchability, but also provided long-term stability. The obtained fibers exhibited fast response time and ultra-low detection limit, showing potential applications for wearable electronic textiles.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Physical
Yen-Ting Lin, Chia-Yu Lee, Chih-Yao Wu, Jhih-Min Lin, Tai-Chou Lee, Shih-Huang Tung, Cheng-Liang Liu
Summary: In this study, poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) films with improved thermoelectric properties were fabricated using spray coating and a sequential two-step post-treatment process. The electrical conductivity of the PEDOT-PSS film was greatly increased up to 1752.1 S cm-1 through EG treatment, while the use of 0.05 M MAI in the second step provided a high power factor of 122.3 mu Wm-1 K-2. The fabrication approach developed in this study provides a paradigm for producing polymer thermoelectric materials with great potential for application in wearable thermoelectric devices.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Textiles
S. Thamarai Selvi, R. Sunitha, L. Ammayappan, C. Prakash
Summary: In this study, a futuristic approach was used to improve the compatibility between reinforcement and polymer matrix in composites through various chemical treatments. The adhesion of the reinforcement to the matrix was enhanced by modifying the surface using these chemical treatments. The chemical treatments had different effects on fiber properties and surface morphology.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Engineering, Environmental
Tingjie Chen, Zhiyong Liu, Xiaokang Hu, Gang Zhao, Zipeng Qin, John Tosin Aladejana, Xiangfang Peng, Yongqun Xie, Binghui Wu
Summary: Renewable and biodegradable plant fiber sponges (PFS) can be improved by modifying them with a highly thermo-conductive hexagonal boron nitride (h-BN) ink as a fire retardant. The modified PFS@h-BN show enhanced fire resistance, reduced smoke release, and improved mechanical performance, making them a promising material for safe and energy-efficient building applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Shuiting Ding, Yongshi Guo, Hui Yu
Summary: Poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) core-shell conductive atypical spiral microfibers were prepared using microfluidic spinning technology (MST). The composite membranes of the microfibers and polydimethylsiloxane (PDMS) were characterized. The research results showed that the composite membranes exhibited high conductivity, strain, and potential applications in thin membrane sensors and electronic skins.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Applied
Jure Zigon, Janez Kovac, Marko Petric
Summary: The study compared the surface properties of beech wood after mechanical, physical, and chemical treatment, showing a relationship with waterborne opaque coatings. It indicated that the properties of the coatings, in addition to the surface condition of the wood, play a significant role in adhesion and wettability.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Chemistry, Physical
Mostafa Jabbari, Magnus Lundin, Saeed Bahadorikhalili, Mikael Skrifvars, Mohammad J. Taherzadeh
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS
(2020)
Article
Polymer Science
Anjum Saleem, Luisa Medina, Mikael Skrifvars
JOURNAL OF POLYMER RESEARCH
(2020)
Article
Biochemistry & Molecular Biology
Sunanda Sain, Leonidas Matsakas, Ulrika Rova, Paul Christakopoulos, Tommy Oman, Mikael Skrifvars
Summary: Formaldehyde-free bioresin adhesives were synthesized from lignin and tannin extracted from softwood bark, using glyoxal as a substitute for formaldehyde to modify the chemical structure. The glyoxal modification reaction was confirmed by ATR-FTIR spectroscopy, and the thermal properties were assessed by DSC and TGA. High temperature-cured bioresins showed higher thermal stability and degree of cross-linking, influenced by resin compositions and curing temperatures.
Article
Polymer Science
Pooria Khalili, Mikael Skrifvars, Ahmet Semih Erturk
Summary: The mechanical properties of regenerated cellulose fabric-reinforced composite were studied, showing higher tensile strength and ductility compared to natural fibre counterparts. Simulation was used to predict the behavior of the bio-composite, including modeling the structural behavior of a car door panel.
Review
Chemistry, Multidisciplinary
Eija-Katriina Uusi-Tarkka, Mikael Skrifvars, Antti Haapala
Summary: Climate change, waste disposal challenges, and emissions from non-renewable materials are driving the production of sustainable composites, such as All-cellulose composites (ACCs). ACCs are fully biodegradable, lightweight, recyclable, and have various beneficial properties, making them competitive in industries like food packing, medical, technical, and vehicles. Research on more specific applications, such as All-cellulose nanocomposites (ACNCs), is expanding the field of sustainable materials.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Multidisciplinary
Claude Huniade, Daniel Melling, Cedric Vancaeyzeele, Giao T-M Nguyen, Frederic Vidal, Cedric Plesse, Edwin W. H. Jager, Tariq Bashir, Nils-Krister Persson
Summary: With the development of ion-based devices and ionotronics, there is a growing recognition of the importance of matching electronic and biological interfaces. Textiles, known for their conformity, lightweight, and comfort, are considered an ideal candidate for the new generation of ion-based electronics, known as i-textiles. Researchers have successfully produced ionically conductive fibers, called ionofibers, using a continuous dip-coating process with a specially designed ionogel precursor solution. These ionofibers, which maintain their conductivity even after integration into fabrics, offer promising perspectives for the development of i-textiles with enhanced properties and in-air electrochemical applications.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Materials Science, Composites
Behnaz Baghaei, Belinda Johansson, Mikael Skrifvars, Nawar Kadi
Summary: This study explores the recycling of discarded denim fabrics through the production of all-cellulose composites (ACCs) using an ionic liquid. Different manufacturing methods and fabric types were investigated for their impact on the mechanical properties of the formed ACCs. The results indicate that the manufacturing method has minimal influence on tensile properties, while the two-step method affects the modulus of elasticity. Additionally, impact properties are mainly influenced by the preparation method and fabric type.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Polymer Science
Eija-Katriina Uusi-Tarkka, Jaka Levanic, Henrik Herajarvi, Nawar Kadi, Mikael Skrifvars, Antti Haapala
Summary: In this study, sustainable all-cellulose composites (ACCs) were produced and the effects of dissolution time, hot press temperature, and the addition of TEMPO-oxidized nanocellulose on the properties of the composites were investigated. It was found that incorporating TEMPO-oxidized nanocellulose improved the mechanical properties and elongation at break of the ACCs.
Article
Polymer Science
Eija-Katriina Uusi-Tarkka, Mikael Skrifvars, Pooria Khalili, Henrik Herajarvi, Nawar Kadi, Antti Haapala
Summary: This study explores the use of wood-fiber-based fabrics containing Lyocell yarn and Spinnova-Lyocell yarn to form unidirectional all-cellulose composites (ACC) through dilution in a NaOH-urea solution. The tensile properties and thermal stability of the ACC were compared to thermoplastic biocomposites prepared with biobased polypropylene (PP). The ACC showed higher tensile strength in the warp direction and doubled elongation at break compared to other samples, while also exhibiting higher thermal stability. Furthermore, the ACC demonstrated significantly higher water absorption compared to the PP biocomposites. These findings highlight the unique properties of ACC and suggest potential commercial applications.
Article
Agricultural Engineering
Matilda Johansson, Mikael Skrifvars, Nawar Kadi, Hom Nath Dhakal
Summary: The aim of this research is to investigate if a low-cost by-product could be used as a component in a composite matrix material in the automotive industry to reduce the final weight and increase the non-petrochemical material usage of composite material without compromising the thermal and mechanical properties demanded. By chemically modifying lignin, the impact strength, thermal stability, and moisture repellence behavior of the composite material were improved significantly. The better interfacial compatibility between lignin and polylactic acid matrix was the key factor contributing to the improved properties.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Polymer Science
Pooria Khalili, Mikael Skrifvars, Hom Nath Dhakal, Saeid Hosseinpour Dashatan, Mikael Danielsson, Alexia Feiner Gracia
Summary: Sandwich composites consisting of regenerated cellulose fabric and bio-based polypropylene as facings, as well as virgin and recycled polyamide textiles as core materials, were produced using compression moulding techniques. The addition of thicker recycled textile improved the bending stiffness and peak flexural force. Substituting one layer of recycled textile for two layers of virgin material provided good impact energy absorption capacity and maximum force. Tensile strength varied among the different composite materials, but no evidence of fiber tow debonding, fiber bundle splitting, or delamination was observed.
Article
Polymer Science
Mina Arya, Else-Marie Malmek, Thomas Koch Ecoist, Jocke Pettersson, Mikael Skrifvars, Pooria Khalili
Summary: The rising industrial demand for environmentally friendly and sustainable materials has led to increased research on natural fibers, particularly jute fibers. This study investigates the mechanical properties of plasma-treated jute composite laminates and the flexural behavior of jute fabric-reinforced sandwich composites. The results show that plasma treatment improves the mechanical properties of jute composites, and the flexural properties of jute sandwich composites can be enhanced by incorporating PET100 foams.
Article
Engineering, Environmental
Samira Akbari, Andrew Root, Mikael Skrifvars, Sunil Kumar Ramamoorthy, Dan Akesson
Summary: Unsaturated polyester resins derived from oil-based monomers have limited applicability in high-temperature environments due to their low thermal stability. This study focuses on developing bio-based solventless unsaturated polyester resins, and results show that resins based on 2,5-furandicarboxylic acid have superior thermomechanical properties compared to commercial reference resins.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Materials Science, Composites
Anjum Saleem, Luisa Medina, Mikael Skrifvars
Summary: This study aimed to enhance the mechanical properties of bast fiber reinforced acrylic-based polyester resin composites by hybridizing with basalt fibers, which significantly improved the mechanical performance compared to bast fiber composites. The hybrid composites showed approximately 21% and 19% higher flexural modulus and strength, around 31% and 16% higher tensile modulus and strength, and 13% higher impact energy than bast fiber reinforced composites.
JOURNAL OF COMPOSITES SCIENCE
(2021)
Article
Materials Science, Composites
Anjum Saleem, Luisa Medina, Mikael Skrifvars
JOURNAL OF COMPOSITES SCIENCE
(2020)
Article
Polymer Science
Zhongming Yuan, Hiroko Yamamoto, Shinji Kanehashi, Takeshi Shimomura
Summary: This study reports the synthesis of a flexible light-emitting polymer film using a solution blending method. The selective positioning of MEH-PPV molecules in the PS phase of the film was confirmed. The film exhibited a nanometer-scale luminescent domain with low aggregation quenching and showed good elastomeric characteristics.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2024)