Article
Chemistry, Multidisciplinary
Josefine Meurer, Julian Hniopek, Thomas Baetz, Stefan Zechel, Marcel Enke, Juergen Vitz, Michael Schmitt, Juergen Popp, Martin D. Hager, Ulrich S. Schubert
Summary: A new shape-memory polymer is presented, utilizing two different metal complexes to achieve high strain fixity rates and strain recovery rates, with the mechanism revealed through various techniques such as Raman spectroscopy.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Mikhail Vagin, Viktor Gueskine, Evangelia Mitraka, Suhao Wang, Amritpal Singh, Igor Zozoulenko, Magnus Berggren, Simone Fabiano, Xavier Crispin
Summary: The oxygen reduction reaction (ORR) is a bottleneck for energy conversion efficiency in fuel cells and air-metal batteries, and there is a growing interest in finding efficient electrodes based on abundant materials. This study introduces a negatively doped poly(benzimidazobenzophenanthroline) (BBL) as a promising air electrode material, surpassing p-doped PEDOT in performance for low-cost and ecofriendly model fuel cells.
ADVANCED ENERGY MATERIALS
(2021)
Review
Chemistry, Inorganic & Nuclear
Weimo Li, Ce Wang, Xiaofeng Lu
Summary: This review article discusses the recent development and electrocatalytic properties of carbon-rich nanomaterials derived from conducting polymers for hydrogen and oxygen reactions. The correlations between their composition, electronic structure, and electrocatalytic performance are comprehensively discussed. The challenges and opportunities in designing new types of conducting polymers-derived electrocatalysts with improved performance for hydrogen and oxygen reactions are also highlighted.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Physical
Denys S. Butenko, Shilin Li, Volodymyr O. Kotsyubynsky, Volodymyra M. Boychuk, Volodymyr I. Dubinko, Pavlo I. Kolkovsky, Nikita A. Liedienov, N. I. Klyui, Wei Han, Igor V. Zatovsky
Summary: The study focused on creating carbon matrices with high surface areas for effective catalytic activity, particularly in electrocatalysis. Microporous carbon (MPS) derived from plant waste was impregnated with Pd nanoparticles and showed high electrocatalytic activity and stability in hydrogen evolution reaction and water splitting. The relationship between the characteristics of the carbon matrix, Pd nanoparticles size, and electrocatalytic properties was discussed in detail.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Felicia Zaar, Rikard Emanuelsson, Philipp Gaiser, Maria Stromme, Martin Sjodin
Summary: Molecular catalysts can be immobilized on conducting polymers to enhance their contact with solid materials and improve the selectivity and activity of catalytic reactions. However, the catalytic cycle negatively affects the immobilization matrix, so the choice of immobilization method should be considered in the molecular design process.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Kang Chen, Shihang Zhao, Jie Sun, Jiachao Zhou, Yingchao Wang, Kai Tao, Xunwen Xiao, Lei Han
Summary: A core-shell structure composite material consisting of a conductive polymer and 2D conductive metal-organic frameworks (CMOFs) was assembled by hydrothermal methods, demonstrating excellent performance. The material was incorporated into a hybrid supercapacitor and showed superior energy density and lifetime, as well as the ability to illuminate 12 LEDs. This strategy provides additional options for developing high-performance electrode materials for supercapacitor devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xianzhuo Lao, Min Yang, Xiaoli Sheng, Jing Sun, Yiqian Wang, Derui Zheng, Mingyuan Pang, Aiping Fu, Hongliang Li, Peizhi Guo
Summary: PdBi NPs with exceptional electrocatalytic mass activity were synthesized via a one-step oil bath method, with Bi doping showing a positive effect on ethanol oxidation reaction. The density functional theory calculations revealed that the energy barrier of PdBi NPs can be reduced by adjusting the Bi content.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Felicia Zaar, Sandra Olsson, Rikard Emanuelsson, Maria Stromme, Martin Sjodin
Summary: This study presents the design, synthesis, and characterization of a conducting polymer backbone functionalized with free base porphyrin pendant groups. The results show that the polymerized system is stable and that the properties of the polymer and the porphyrins are independently preserved. The system offers possibilities of molecular heterogeneous electrocatalysis for redox reactions.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Rodolfo M. Antoniassi, Heiki Erikson, Jose Solla-Gullon, Roberto M. Torresi, Juan M. Feliu
Summary: The study demonstrates that deposition of Pd on small supported Pt materials leads to enhanced electrocatalytic activity for formic acid electrooxidation, with lower overpotentials and higher oxidation current densities. The intrinsic activity after Pd decoration is significantly increased, while the oxidation overpotential is shifted to lower values by around 200 mV.
JOURNAL OF CATALYSIS
(2021)
Review
Energy & Fuels
Silki Sardana, Anjli Gupta, Kuldeep Singh, A. S. Maan, Anil Ohlan
Summary: Conducting polymer hydrogels (CPHs) have gained significant interest in supercapacitors due to their unique features, such as large pseudocapacitance, interconnected 3D porous nanostructure, excellent conductivity, and high flexibility. The hierarchical 3D porous structure enables fast electron transfer and ion diffusion, leading to improved electrical and electrochemical properties of supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Polymer Science
Josefine Meurer, Thomas Baetz, Julian Hniopek, Milena Jaeger, Stefan Zechel, Michael Schmitt, Juergen Popp, Martin D. Hager, Ulrich S. Schubert
Summary: This study synthesizes and characterizes metallopolymer networks with a triple shape-memory ability. The networks exhibit excellent dual and triple shape-memory abilities and have been analyzed using various techniques.
Article
Chemistry, Multidisciplinary
Ambrose Ashwin Melvin, Bhavana Gupta, Kostiantyn Tieriekhov, Wojciech Nogala, Patrick Garrigue, Stephane Reculusa, Alexander Kuhn
Summary: An actuator controlled by light and electric field in a synergistic manner was reported, allowing for better control and a wider range of potential applications, especially in soft robotics. The actuator demonstrated reversible actuation in an aqueous solution through electrochemical reactions, leading to controlled motion based on logic gate operations. Such synergistic switching enables the development of original actuation schemes for complex mechanical tasks triggered by multiple stimuli.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Jelena Covic, Valentin Mirceski, Aleksandra Zarubica, Dirk Enke, Simon Carstens, Aleksandar Bojic, Marjan Randelovic
Summary: In this study, the electrocatalytic reduction of hydrogen peroxide in an alkaline solution was investigated on a hybrid material based on palladium particles supported on graphene. The Pd@G exhibited pronounced electrocatalytic activity for the hydrogen peroxide reduction reaction, which involves complex electrode mechanisms and adsorption phenomena on the surface of palladium nanoparticles.
APPLIED SURFACE SCIENCE
(2022)
Review
Materials Science, Multidisciplinary
Xin Chen, Chengcheng Zhao, Kai Yang, Shiyi Sun, Jinxin Bi, Ningrui Zhu, Qiong Cai, Jianan Wang, Wei Yan
Summary: Lithium-sulfur (Li-S) batteries have received increasing interest due to their high theoretical energy density, low cost, and environmental friendliness. Conducting polymers (CPs) show great potential in Li-S batteries as they can facilitate electron transfer, buffer volumetric changes, and adsorb polysulfides (LiPSs) when doped with heteroatoms. This review introduces various CPs and their application potential, summarizes the research progress in different components of Li-S batteries, and comprehensively discusses the application perspective of CPs in Li-S batteries.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Yuqi Zhao, Hanshu Wu, Rongguan Yin, Chenxi Yu, Krzysztof Matyjaszewski, Michael R. Bockstaller
Summary: The effect of sequence structure on the self-healing and shape-memory properties of copolymer-tethered brush particle films was investigated. It was found that statistical copolymer sequence provided the most rapid restoration of mechanical properties and an increase of the high T(g) (MMA) component improved the material's modulus while retaining self-healing ability. The reduction of flow in brush systems was attributed to slow cooperative relaxation due to the complex microstructure.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Applied
Kirill A. Kurdin, Vitaly V. Kuznetsov, Vitaly V. Sinitsyn, Elena A. Galitskaya, Elena A. Filatova, Charles A. Belina, Keith J. Stevenson
Summary: Two simple synthetic procedures were developed for the synthesis of Pt-HxMoO3 composites, and the composition and structure of the catalysts were characterized using various physical methods. The prepared composites exhibited promising CO-tolerance, providing a potential method for the synthesis of CO-tolerant catalysts in practical fuel cells.
Article
Energy & Fuels
N. A. Ovsyannikov, E. Romadina, N. O. Akhmetov, N. A. Gvozdik, A. Akkuratov, M. A. Pogosova, K. J. Stevenson
Summary: Composite membranes based on PVdF and LAGTP were investigated as prospective solid electrolytes for non-aqueous redox flow batteries, showing high Li-ion conductivity, uniform microstructure, and excellent stability. The membranes demonstrated lower resistance and faster crossover, making them a credible alternative to contemporary commercial membranes for all-organic redox flow batteries.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Chemical
Nikita Akhmetov, Nikolay Ovsyannikov, Nataliya Gvozdik, Mariam Pogosova, Sergey Ryazantsev, Svetlana Lipovskikh, Irina Krasnikova, Keith Stevenson
Summary: Redox flow batteries (RFBs) and lithium metal hybrid flow batteries (Li-HFBs) are energy storage devices, but the lack of suitable membrane hinders the progress of Li-HFBs.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Roman R. Kapaev, Elena V. Shklyaeva, Georgy G. Abashev, Keith J. Stevenson, Pavel A. Troshin
Summary: A nickel tetrathiooxalate (NiTTO) coordination polymer was developed as a cathode material for potassium batteries, and its electrochemical performance was investigated.
MENDELEEV COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Mohamed M. Elnaggar, Lyubov A. Frolova, Alexandra M. Gordeeva, Marina Ustinova, Hannah Laurenzen, Alexander Akkuratov, Sergey L. Nikitenko, Elena A. Solov'eva, Sergey Yu Luchkin, Yury S. Fedotov, Sergey A. Tsarev, Nadezhda N. Dremova, Keith J. Stevenson, Sergey Bredikhin, Selina Olthof, Sergey M. Aldoshin, Pavel A. Troshin
Summary: Perovskite solar cells (PSCs) have high efficiency and potential for low-cost manufacturing, but face challenges in operational stability. In this study, a new n-type copolymer was introduced as an electron transport material for PSCs, improving stability and performance.
Article
Electrochemistry
Nataliya A. Gvozdik, Anna A. Kurbatova, Nikolay A. Ovsyannikov, Mariam A. Pogosova, Keith J. Stevenson
Summary: The application of traditional cathode materials in suspensions can enhance the volumetric energy density of metal-ion flow batteries, and the addition of conducting additives is crucial for investigating intercalation materials effectively.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
V. I. Vlasov, N. A. Gvozdik, M. D. Mokrousov, S. V. Ryazantsev, S. Yu. Luchkin, D. A. Gorin, K. J. Stevenson
Summary: Preferential water transfer (PWT) is an important issue in vanadium flow batteries. In this study, a new method of controlling PWT through membrane modification is proposed. By balancing the concentrations of cation and anion groups on the membrane surface, the direction of PWT can be controlled. The results show that modified bilayer membranes have lower capacity fade and higher energy efficiency.
JOURNAL OF POWER SOURCES
(2022)
Article
Multidisciplinary Sciences
Semyon D. Shraer, Nikita D. Luchinin, Ivan A. Trussov, Dmitry A. Aksyonov, Anatoly Morozov, Sergey Ryazantsev, Anna R. Iarchuk, Polina A. Morozova, Victoria A. Nikitina, Keith J. Stevenson, Evgeny Antipov, Artem M. Abakumov, Stanislav S. Fedotov
Summary: The authors report the synthesis of a polyanion positive electrode active material that enables high-capacity and high-voltage sodium battery performance. The material shows promising results in terms of discharge capacity and average cell discharge voltage in coin cell configuration.
NATURE COMMUNICATIONS
(2022)
Article
Electrochemistry
Maria Makarova, Alexander Akkuratov, Maxim E. Sideltsev, Keith J. Stevenson, Elena Romadina
Summary: In this study, two novel organic molecules were synthesized and evaluated as anolytes in nonaqueous all organic redox flow batteries. These molecules exhibited improved performance compared to their unsubstituted counterparts, with lower redox potentials, increased solubility, reduced permeability, and higher stability.
Article
Chemistry, Physical
Sergey Yu. Luchkin, Maria A. Kirsanova, Dmitry A. Aksyonov, Svetlana A. Lipovskikh, Victoria A. Nikitina, Artem M. Abakumov, Keith J. Stevenson
Summary: Li-rich layered metal oxides have been extensively studied as potential positive electrode materials for Li-ion batteries. This research investigates the cycling-driven electrochemical activation process in Li-rich materials, which leads to an increase in reversible capacity. The activation process involves oxidation and reduction reactions, with the rate being influenced by the cycling rate.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Anatolii V. Morozov, Haemin Paik, Anton O. Boev, Dmitry A. Aksyonov, Svetlana A. Lipovskikh, Keith J. Stevenson, Jennifer L. M. Rupp, Artem M. Abakumov
Summary: This study successfully synthesized a thin LCO film on Ta-LLZO solid electrolyte using PLD technique, exhibiting a specific microstructure influenced by the thermodynamic effects of oxygen and lithium chemical potentials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Vasily Artemov, Alexander Ryzhov, Henni Ouerdane, Keith J. Stevenson
Summary: We conducted a comparative study of the conductivity data of weak and strong electrolytes and discovered previously unknown differences and similarities. By considering the neutralization of excess protons and proton holes in water, we developed a model that explains the conductivity of aqueous solutions. Our results suggest that the aggregation of species in weak electrolytes may be the main factor causing the difference in conductivity between weak and strong electrolytes. These findings advance our understanding of the dynamic structure of aqueous electrolyte solutions and have important implications for nanofluidic, biological, and electrochemical systems.
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Physical
Svetlana Melnik, Alexander Ryzhov, Alexei Kiselev, Aleksandra Radenovic, Tanja Weil, Keith J. Stevenson, Vasily G. Artemov
Summary: The electrodynamics properties of nanoconfined water have been significantly changed compared to bulk water, providing opportunities for safe electrochemical systems. We present a nanofluidic water-only battery that exploits the unusually high electrolytic properties of pure water under strict confinement. The device, composed of carbon-based nanomaterials, creates interconnected nanochannels filled with water between the separator and electrodes. The efficiency of the battery shows a maximum energy density at 3 nm, challenging the current metal-ion batteries. Our findings establish the electrodynamic fundamentals of nanoconfined water and pave the way for low-cost and inherently safe energy storage solutions needed in the renewable energy sector.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Roman R. Kapaev, Andriy Zhugayevych, Sergey Ryazantsev, Dmitry A. Aksyonov, Daniil Novichkov, Petr Matveev, Keith J. Stevenson
Summary: NiBTA is a promising material for fast-charging metal-ion batteries, with high capacities, fast charge-discharge kinetics, and compatibility with various cations. It undergoes structural rearrangements in different electrolyte systems and its charge storage mechanism involves reversible two-electron reduction.
Article
Chemistry, Physical
Aleksandr A. Kurilovich, Vladimir N. Mantsevich, Yousof Mardoukhi, Keith J. Stevenson, Aleksei Chechkin, Vladimir V. Palyulin
Summary: This study explains the anomalous behavior of exciton diffusion in perovskites and transition metal dichalcogenides by developing a non-Markovian mobile-immobile model. The model effectively fits the experimental data, providing a way to quantify exciton diffusion dynamics.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
