Article
Polymer Science
Kota Aoki, Ayae Sugawara-Narutaki, Yuya Doi, Rintaro Takahashi
Summary: Mixtures of poly(vinylidene difluoride-co-hexafluoropropylene) and ionic liquids form polymer-gel electrolytes with flexible, self-healing, and ion-conductive properties. The structure and viscoelastic properties of this system were studied using various analytical techniques, revealing the importance of polymer network structure and dynamics. The results indicate complex interactions between the polymer, ionic liquid, and cations, leading to unique binding energy and cooperative behavior.
Article
Energy & Fuels
Duy Linh Vu, Cong Phat Vo, Chau Duy Le, Kyoung Kwan Ahn
Summary: A new PIL membrane was fabricated for improved output performance in TENGs, achieving higher power density by increasing ion availability and doping with more fluoride atoms. The study demonstrates the potential for practical applications in energy harvesting and self-powered sensors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Joao P. Serra, Liliana C. Fernandes, Nelson Pereira, Arkaitz Fidalgo-Marijuan, Jose M. Porro, Carlos M. Costa, Daniela M. Correia, Senentxu Lanceros-Mendez
Summary: PVDF-HFP films incorporating different types of imidazolium ionic liquids with different magnetic anions and imidazolium cation chain lengths have been developed for humidity-sensing applications. The IL/PVDF-HFP composites exhibit a porous structure independently of the IL anion type and cation chain length. The inclusion of ILs induces polymer crystallization into the electroactive beta phase, with the most noticeable increase observed for PVDF-HFP/[Bmim][FeCl4]. The hybrid samples show a decrease in thermal stability and yield strength, with PVDF-HFP/[Bmim]2[Co(SCN)4] samples experiencing the most significant decrease. PVDF-HFP/[Bmim]2[Co-(SCN)4] and PVDF-HFP/[Bmim][FeCl4] composites display the highest magnetization. The PVDF-HFP/[Bmim]2[CoCl4] composite exhibits the highest relative humidity sensing response. The developed IL/polymer composites show potential for humidity sensing applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Energy & Fuels
Yulong Liu, Huanyan Xu, Wannian Liu, Guanghui Li, Xin Liu, Minghua Chen, Zhen Chen
Summary: All-solid-state lithium metal batteries are attracting attention due to their improved safety and higher energy density compared to traditional lithium-ion batteries. However, the limited lithium-ion flux in solid-state polymer electrolytes poses a challenge for the performance of these batteries. In this study, a novel composite solid polymer electrolyte was developed, which greatly improved the rate capability and cycling stability of the batteries.
Article
Materials Science, Multidisciplinary
Irina N. Bagryantseva, Valentina G. Ponomareva, Vyacheslav R. Khusnutdinov
Summary: The study investigated proton conductivity, morphology, phase composition, and mechanical properties of (1-x)CsH2PO4-xp(VDF/HFP) polymer electrolytes for the first time, showing promising potential for CsH2PO4-based polymer electrolytes in medium-temperature fuel cell applications.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Hao Pan, Ling Weng, Xiaoming Wang, Xiaorui Zhang, Lizhu Guan, Jiahao Shi
Summary: In this study, a core-shell structural nanorod with magnetic rod-shaped zinc ferrite (ZnFe2O4) as the core and barium titanate (BaTiO3) as the shell was successfully prepared by the sol-gel method. The fabricated core-shell nanorods were incorporated into polyvinylidene fluoride-co-hexafluoropropylene (P(VDF-HFP)) to prepare the composites. The arrangement of the nanorods in the polymer matrix was controlled by a parallel magnetic field, resulting in an ordered directional arrangement and improved dielectric properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Ji-Young Ock, Miki Fujishiro, Kazuhide Ueno, Izuru Kawamura, Ryoichi Tatara, Kei Hashimoto, Masayoshi Watanabe, Kaoru Dokko
Summary: A flexible composite electrolyte was prepared by combining a Lit-ion-conducting solid electrolyte LATP and a PVDF-HFP gel containing LiTFSA/sulfolane electrolyte, showing that Li-ion conduction mainly occurred in the gel phase. However, the interfacial resistance between LATP and the PVDF-HFP gel was high, leading to a reduced contribution of LATP particles to Li-ion conduction in the composite electrolyte.
Article
Polymer Science
Si Shen, Tingting Jia, Jing Jia, Ning Wang, Di Song, Jing Zhao, Jin Jin, Quantong Che
Summary: The proton exchange membranes (PEMs) constructed through alternate depositing chitosan and graphene oxide show improved proton conductivity and mechanical properties in high temperature proton exchange membrane fuel cells (HTPEMFCs). Doped phosphoric acid molecules enhance membrane's mechanical strength, while layer-by-layer deposited composite membranes exhibit excellent proton conductivity and stability. The strategy of alternate depositing functional components on membrane substrates proves to be more effective at enhancing the quality of PEMs.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Energy & Fuels
S. A. Hashmi, Md. Yasir Bhat
Summary: Flexible and quasi-solid-state gel polymer electrolytes (GPEs) comprising plastic crystals have emerged as a new class of materials for energy storage applications. This study presents a novel composition of GPEs for supercapacitors, which consists of a flexible matrix of non-ionic plastic crystal and organic-ionic plastic crystal immobilized in a polymer. The GPE films demonstrate high ionic conductivity and wide electrochemical stability window, making them attractive as potential electrolytes for supercapacitors. The addition of Li-salt further improves the performance of supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Polymer Science
Jin Hamaura, Ryo Honma, Hisao Hori, Abdelatif Manseri, Bruno Ameduri
Summary: Mineralization of PVDF, VDF-co-HFP and ETFE in superheated water with an alkaline reagent was studied for fluorine element recycling. The polymers underwent defluorination to form fluoride ions at 250 degrees Celsius in an Ar atmosphere. The presence of O2 instead of Ar resulted in different products. Consecutive runs did not reduce the yield of fluoride ions. PVDF, VDF-co-HFP, and ETFE copolymers completely mineralized to form fluoride ions with yields of 95%, 100%, and 98%, respectively. Adding Ca(OH)2 to the reaction solutions produced artificial fluorspar.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Chemical
Vikrant Yadav, Nehal H. Rathod, Jeet Sharma, Vaibhav Kulshrestha
Summary: This article introduces the synthesis and analysis of poly(vinylidene fluoride-co-hexafluompropylene) based anion exchange membranes for electrodialysis, demonstrating their notable electrochemical properties for brackish water desalination. TEM and AFM imaging provide insights into the membrane's structure and properties, contributing to the optimization of AEMs for efficient electrodialysis applications.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Joao Carlos Barbosa, Daniela Maria Correia, Paulo Nunes, Mariana Fernandes, Arkaitz Fidalgo-Marijuan, Renato Goncalves, Stanislav Ferdov, Veronica de Zea Bermudez, Senentxu Lanceros-Mendez, Carlos Miguel Costa
Summary: In this study, three-component solid polymer electrolytes (SPEs) based on poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) as host polymer, clinoptilolite zeolite, and different ionic liquids (ILs) were produced and characterized. The influence of IL anion and cation on various properties of the SPEs and battery cycling performance were studied. The results showed that [SCN]- anion was the most suitable for SPE applications and the ionic conductivity depended on the IL type. The best battery performance was observed for the SPE based on [BMIM][SCN].
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Qingchuan Du, Shumin Shi, Lida Zhang, Zhongyuan Yan, Xu Zeng, Jingjing Wu, Weixin Zhou, Zhen-Dong Huang, Titus Masese, Yanwen Ma
Summary: The study developed separators based on the building concept of a bird's nest, consisting of SiO2 nanowires reinforced with PVDF-HFP. Compared to bare SiO2 nanowire separators, the hybrid separators show improved mechanical properties due to a strong crosslink effect, while maintaining excellent electrolyte wettability and ionic conductivity. Lithium metal batteries with these hybrid separators exhibit excellent rate performance and cyclic stability.
Article
Polymer Science
Amjad Albiladi, Lassaad Gzara, Hussam Organji, Nazeeha S. Alkayal, Alberto Figoli
Summary: The major challenge in membrane distillation (MD) is membrane wetting caused by pollutants. This study focused on fabricating hydrophobic membranes for brine treatment using electrospun PVDF-HFP nanofiber membranes. The effects of solvent composition and polymer concentration on the electrospinning process were investigated, and post-treatment was carried out to optimize membrane performance.
Article
Thermodynamics
Irena Kresic, Natasa Stipanelov Vrandecic, Matko Erceg, Zoran Grubac, Mia Galic
Summary: This study focuses on the characterization of a series of solid nanocomposite polymer electrolytes consisting of PEO, POSS, and LiBOB. The addition of LiBOB and POSS leads to a decrease in the crystallinity and melting temperatures of PEO, while the glass transition temperatures increase. The thermal stability of the polymer electrolytes was investigated, showing a more complex degradation compared to pure PEO. However, the polymer electrolytes remain thermally stable enough for their applications in electrochemical devices. The incorporation of LiBOB and POSS positively influences the ionic conductivity of PEO. The optimized system was determined based on the ionic conductivity of the nanocomposites.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Chemistry, Physical
Christoffer Olsson, Samuel Genheden, Victoria Garcia Sakai, Jan Swenson
JOURNAL OF PHYSICAL CHEMISTRY B
(2019)
Article
Chemistry, Physical
Iqbaal Abdurrokhman, Khalid Elamin, Olesia Danyliv, Mohammad Hasani, Jan Swenson, Anna Martinelli
JOURNAL OF PHYSICAL CHEMISTRY B
(2019)
Article
Chemistry, Analytical
Daniel Midtvedt, Fredrik Eklund, Erik Olsen, Benjamin Midtvedt, Jan Swenson, Fredrik Hook
ANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Physical
Christoffer Olsson, Jan Swenson
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Chemistry, Physical
Thomas O. Farmer, Anders J. Markvardsen, Thomas H. Rod, Heloisa N. Bordallo, Jan Swenson
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Biochemistry & Molecular Biology
Wojciech Chrobak, Dawid Wojciech Pacut, Fredrik Blomgren, Alexander Rodin, Jan Swenson, Inna Ermilova
Summary: CBD may potentially inhibit the cytotoxicity of Aβ through various mechanisms such as reducing peptide aggregation and interacting with peptides. The presence of water also plays a role in peptide clustering, with higher peptide concentrations leading to increased aggregation.
ACS CHEMICAL NEUROSCIENCE
(2021)
Article
Chemistry, Physical
Szilvia Vavra, Khalid Elamin, Lars Evenas, Anna Martinelli
Summary: The local structure and molecular dynamics of an imidazole/protic ionic liquid mixture confined in silica mesopores were investigated. Ionic conductivity decreased rapidly with decreasing liquid amount, while self-diffusion coefficients showed a dependence on composition. X-ray scattering revealed specific molecular organization in the mesopores, potentially reflecting the formation of a monolayer of octyl-imidazolium cations.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Anna Martinelli, Jose M. Otero-Mato, Mounesha N. Garaga, Khalid Elamin, Seikh Mohammad Habibur Rahman, Josef W. Zwanziger, Ulrike Werner-Zwanziger, Luis M. Varela
Summary: The study presents a novel solid-state proton conductor obtained through acid-base chemistry, showing higher proton conductivity and densely packed solid structure. Computational results suggest that the proton transfer primarily involves imidazole and water molecules, with the Keggin anion contributing to lowering the energy barrier.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Govindan Induchoodan, Helen Jansson, Jan Swenson
Summary: Asphaltenes, a group of exotic hydrocarbons found in bitumen, play a crucial role in the characteristic properties of crude oil derivatives. While attempts to enhance bitumen with nanoparticles like graphene derivatives have been successful, the structural stability of asphaltene aggregates in bitumen has been overlooked. The introduction of graphene oxide (GO) has been shown to destabilize the asphaltene aggregates, hindering any functional enhancements to bituminous roads.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Govindan Induchoodan, Helen Jansson, Amir Saeid Mohammadi, Jan Swenson
Summary: Graphene derivatives have been used as additives to enhance the properties of bitumen. However, previous research found that the poor compatibility between graphene derivatives and asphaltene aggregates in bitumen leads to negative effects. In this study, a surface chemistry modification of graphene was conducted to achieve phase compatibility with asphaltene aggregates. The functionalized graphene was stable in bitumen and successfully improved its material properties.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Physical
Kajsa Ahlgren, Christoffer Olsson, Inna Ermilova, Jan Swenson
Summary: This study compared the structural and dynamical properties of aqueous solutions of trehalose and sucrose and found that trehalose is more efficient in stabilizing proteins. The results indicate that trehalose forms fewer hydrogen bonds with proteins and has slower rotational motion, leading to a less perturbed protein structure.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Jennifer Gilbert, Inna Ermilova, Michihiro Nagao, Jan Swenson, Tommy Nylander
Summary: In this study, the effects of encapsulating two industrially important enzymes in lipid nanoparticles on the dynamics of lipid membranes were investigated using experimental and simulation techniques. The experimental results showed a reduction in membrane dynamics upon enzyme encapsulation, while the simulations revealed that the presence of proteins slowed down the relaxation of lipids, resulting in increased membrane rigidity.
Article
Chemistry, Physical
Robert Paberit, Erik Rilby, Johan Gohl, Jan Swenson, Zakariaa Refaa, Par Johansson, Helen Jansson
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
Inna Ermilova, Jan Swenson
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Chemistry, Physical
Christoffer Olsson, Rano Zangana, Jan Swenson
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Electrochemistry
Abdul Qayoom Mugheri, Shaista Khan, Ali Asghar Sangah, Aijaz Ahmed Bhutto, Muhammad Younis Laghari, Nadeem Ahmed Mugheri, Asif Ali Jamali, Arsalan Ahmed Mugheri, Nagji Sodho, Abdul Waheed Mastoi, Aftab Kandhro
Summary: Green hydrogen has the potential to transition to a pollution-free energy infrastructure. This study proposes a solution to produce hydrogen during the photoelectrochemical process, offering greater stability and control over chemical reactions. Techno-economic assessments show the efficiency and economic feasibility of co-producing value-added chemicals to enhance green hydrogen production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Danpeng Cheng, Wuxin Sha, Qigao Han, Shun Tang, Jun Zhong, Jinqiao Du, Jie Tian, Yuan-Cheng Cao
Summary: LiNixCoyMn1-x-yO2 (NCM) is a critical cathode material for lithium-ion batteries in electric vehicles. The aging of cathode/electrolyte interfaces leads to capacity degradation and long-term cycle instability. A novel neural network model called ACGNet is developed to predict electrochemical stability windows of crystals, allowing for high-throughput screening of coating materials. LiPO3 is identified as a promising coating material with high oxidation voltage and low cost, which significantly improves the cycle stability of NCM batteries. This study demonstrates the accuracy and potential of machine learning in battery materials.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
P. Mohana, R. Yuvakkumar, G. Ravi, S. Arunmetha
Summary: This study successfully fabricates a non-noble CuO/NiO/rGO nanocomposite and investigates its electrocatalytic performance for oxygen evolution reaction in alkaline environment. The experimental results demonstrate that the electrocatalyst exhibits high activity and good stability, offering a new synthetic approach for sustainable energy production.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Qiong Qu, Jing Guo, Hongyu Wang, Kai Zhang, Jingde Li
Summary: In this study, a bifunctional electrode host design consisting of carbon nanofibers implanted ordered porous Co-decorated Al2O3 supported on carbon nanotube film (CNTF) was proposed to address the shuttling effect of lithium polysulfides (LiPSs) and dendrite formation of metal lithium anode in lithium-sulfur (Li-S) batteries. The electrode exhibited excellent conductivity, efficient confinement of LiPSs, and catalytic conversion performance, resulting in high initial capacity and good capacity retention during cycling. As an anode, the electrode showed excellent Li+ diffusion performance and uniform lithium growth behavior, achieving a dendrite-free lithium electrode. The flexible pack cell assembled from these electrodes delivered a specific capacity of 972 mAh g(-1) with good capacity retention.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Hong Zhang, Jin-Peng Yu, Chen Chen, Cheng-Yong Shu, Guang-Yu Xu, Jie Ren, Kai Cui, Wen-Fang Cai, Yun-Hai Wang, Kun Guo
Summary: Spray coating of acetylene black nanoparticles onto stainless steel mesh can enhance its biofilm formation ability and current density, making it a promising electrode material for microbial electrochemical systems. The spray coating method is simple, cost-effective, and suitable for large-size stainless steel electrodes.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Binpeng Hou, Jingjin Chen, Li-Hong Zhang, Xiaowen Shi, Zizhong Zhu
Summary: The electrochemical performance of Li1.20Mn0.44Ni0.32Co0.04O2 and its oxygen-deficient phase Li1.20Mn0.44Ni0.32Co0.04O1.83 was studied through first-principles calculations. The results show that the oxygen-deficient phase has a higher theoretical capacity but lower voltage platform and higher chemical activity compared to the pristine phase.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Yating Du, Sayoko Shironita, Daisuke Asakura, Eiji Hosono, Yoshitsugu Sone, Yugo Miseki, Eiichi Kobayashi, Minoru Umeda
Summary: This study investigates the effect of high- and low-temperature environments on the charge-discharge performance of a Li-ion battery. The deterioration mechanisms of the battery at different temperatures are analyzed through various characterization techniques. The results indicate that the battery performance deteriorates more significantly at a low-temperature environment of 5 degrees C compared to higher temperatures. The understanding of the deterioration mechanisms can contribute to the development of safer battery usage methods.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Si-Si Shi, Zhi-Xiang Yuan, Fei Zhang, Ping Chen
Summary: In this study, a new nano-electrocatalyst was prepared, which exhibited superior electrocatalytic activity for the reduction of NO2- to ammonia in a neutral electrolyte, potentially due to the synergistic enhancement between Co3O4-x and Co.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Berna Dalkiran, Havva Bekirog
Summary: This study reports the use of deep eutectic solvents (DES) based on ethylene glycol and urea as low-cost and green electrolytes for enhancing electrochemical detection of natural antioxidants. The study successfully developed a disposable and effective electrochemical sensing platform for simultaneous determination of ascorbic acid (AA) and gallic acid (GA) using NaOH nanorods on a pencil graphite electrode. The proposed electrode showed improved analytical performance, with higher peak currents and shifted oxidation potentials in DES compared to BR buffer medium.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Sijun Ren, Jianguo Huang
Summary: In this study, a novel bio-inspired nanofibrous WO3/carbon composite was synthesized using a facile hydrothermal method. The three-dimensional network structure of the composite alleviated the volume expansion of WO3 nanorods and enhanced the charge-transport kinetics. The optimized composite exhibited superior lithium storage properties.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Zhilong Zheng, Yu Chen, Hongxia Yin, Hengbo Xiao, Xiangji Zhou, Zhiwen Li, Ximin Li, Jin Chen, Songliu Yuan, Junjie Guo, Haibin Yu, Zhen Zhang, Lihua Qian
Summary: This study found that interstitial Zn cations in CoMoO4 can modulate the dissolution kinetics of Mo cations and improve the OER performance. The interstitial Zn cations can prevent the dissolution of Co cations at high potential, enhancing the durability of the catalyst.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Xiaobo Lin, Shern R. Tee, Debra J. Searles, Peter T. Cummings
Summary: Molecular dynamics simulations using the constant potential method were used to investigate the charging dynamics and charge storage of supercapacitors. The simulations revealed that the water-in-salt electrolyte exhibited the highest charge storage and significantly higher capacitance on the negative electrode. The varying contributions of different electrode regions to supercapacitor performance were also demonstrated.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Wiktoria Lipinska, Vita Saska, Katarzyna Siuzdak, Jakub Karczewski, Karol Zaleski, Emerson Coy, Anne de Poulpiquet, Ievgen Mazurenko, Elisabeth Lojou
Summary: The spatial distribution of enzymes on electrodes is important for bioelectrocatalysis. In this study, controlled spatial distribution of gold nanoparticles on Ti nanodimples was achieved. The efficiency of enzymatic O2 reduction was found to be influenced by the size of the gold nanoparticles and their colocalization with TiO2. The highest stability of enzymatic current was observed with the largest gold nanoparticles.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Tariq M. Al-Hejri, Zeenat A. Shaikh, Ahmed H. Al-Naggar, Siddheshwar D. Raut, Tabassum Siddiqui, Hamdan M. Danamah, Vijaykumar V. Jadhav, Abdullah M. Al-Enizi, Rajaram S. Mane
Summary: This study explores a promising self-growth approach for the synthesis of nickel hydroxide (Ni(OH)2) nanosponge-balls on the surface of a nickel-foam (NiF) electrode. The modified NiF electrode, named Ni(OH)2@NiF, shows distinctive nanosponge-ball morphology and demonstrates excellent energy storage capability and electrocatalytic performance in both hydrogen and oxygen evolution reactions.
ELECTROCHIMICA ACTA
(2024)
Article
Electrochemistry
Rafael Del Olmo, Gregorio Guzman-Gonzalez, Oihane Sanz, Maria Forsyth, Nerea Casado
Summary: The use of Lithium-Ion Batteries (LIBs) is becoming increasingly extensive, and it is important to optimize the devices to achieve their maximum practical specific capacity. In this study, mixed ionic-electronic conducting (MIEC) binders based on PEDOT:PSS and PEDOT: PDADMA-TFSI were developed for Li-ion cathodes, and their performance was compared with conventional formulations. The influence of electrode formulations, including the addition of conducting carbon and an Organic Ionic Plastic Cristal (OIPC), was also analyzed. The proposed binders showed improved performance compared to conventional formulations with different electrolyte types and active materials.
ELECTROCHIMICA ACTA
(2024)