Article
Chemistry, Multidisciplinary
Xian Liang, Xiaolin Ge, Yubin He, Mai Xu, Muhammad A. Shehzad, Fangmeng Sheng, Rachida Bance-Soualhi, Jianjun Zhang, Weisheng Yu, Zijuan Ge, Chengpeng Wei, Wanjie Song, Jinlan Peng, John R. Varcoe, Liang Wu, Tongwen Xu
Summary: By introducing a 3D-interfacial zipping concept, the challenges of mass transport resistances in polymer electrolyte membrane fuel cells are addressed, leading to enhanced power densities and long-term stabilities. The use of a bi-cationic quaternary-ammonium-based polyelectrolyte creates a covalently locked interface that prevents delamination without sacrificing fuel cell performance, as demonstrated in ex situ and in situ tests. A high power density of 1.5 W cm(-2) was achieved in a H-2/O-2 AEMFC test, with performance retention for at least 120 hours at a high current density of 0.6 A cm(-2).
Article
Chemistry, Physical
Youngdon Ko, Loris Lombardo, Mo Li, Thi Ha My Pham, Heena Yang, Andreas Zuettel
Summary: This study demonstrates a facile direct synthesis method using a non-noble nickel catalyst for the anode of direct borohydride fuel cells (DBFCs). The effects of different ionomer types on the catalyst's active site pH and resulting catalytic reactions are evaluated in a single-cell configuration. The performance of the nickel catalyst is compared to that of a palladium catalyst, and fuel utilization and H2 evolution measurements provide further insights into the complex anode reactions in DBFCs.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Natalia Macauley, Robert D. Lousenberg, Magali Spinetta, Sichen Zhong, Fan Yang, Will Judge, Viktor Nikitin, Andrea Perego, Yongzhen Qi, Sara Pedram, Jasna Jankovic, Iryna Zenyuk, Hui Xu
Summary: In order to make proton exchange membrane fuel cells cost-competitive in vehicle applications, the Pt content in the catalyst layers needs to be reduced. This paper presents novel ionomers with significantly higher oxygen permeability than traditional materials. By optimizing the composition and quality of the materials, fuel cell performance is improved and can exceed the durability targets set by the U.S. Department of Energy.
ADVANCED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Qingnuan Zhang, Shuda Dong, Pengpeng Shao, Yuhao Zhu, Zhenjie Mu, Dafei Sheng, Teng Zhang, Xin Jiang, Ruiwen Shao, Zhixin Ren, Jing Xie, Xiao Feng, Bo Wang
Summary: By optimizing the three-phase microenvironment of the ion exchange proton membrane and incorporating ionic covalent organic framework, the platinum loading in fuel cells can be reduced without sacrificing mass activity and peak power density.
Article
Engineering, Industrial
Keisuke Nagato, Kohei Nagai, Toshihide Okamura, Morio Tomizawa
Summary: This study replicated YSZ microstructures using centrifugal filling, resulting in improved performance of solid oxide fuel cells. The replication of pillar and line-and-space structures reduced the polarization resistance of the electrodes.
CIRP ANNALS-MANUFACTURING TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Masa Hren, Michaela Roschger, Viktor Hacker, Bostjan Genorio, Darinka Fakin, Selestina Gorgieva
Summary: The addition of cellulose nanofibrils and quaternized cellulose nanofibrils can significantly enhance the performance of polysaccharide anion exchange membranes, including mechanical properties and ionic conductivity, leading to excellent performance in alkaline direct ethanol fuel cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Dongyeon Kim, Kyung Taek Bae, Kyeong Joon Kim, Ha-Ni Im, Seungsoo Jang, Seeun Oh, Sang Won Lee, Tae Ho Shin, Kang Taek Lee
Summary: Protonic ceramic electrochemical cells (PCECs) have been attracting attention due to their ability to convert chemical fuels into electricity at low temperatures. However, conventional sintering conditions often result in nonstoichiometric electrolytes and electrode coarsening, leading to performance degradation. In this study, PCECs were fabricated through a microwave-assisted sintering process, which effectively suppressed undesirable diffusion and growth, thus producing PCECs with stoichiometric electrolytes and nanostructured fuel electrodes. The resulting PCECs demonstrated higher electrochemical performance compared to conventionally sintered PCECs, highlighting the effectiveness of the ultrafast sintering technique.
ACS ENERGY LETTERS
(2022)
Review
Chemistry, Multidisciplinary
Yu Seung Kim
Summary: This review examines the requirements and design principles of ionomers in catalyst layers for fuel cells and electrolyzers. It also discusses the performance-limiting factors of ionomers and the remaining challenges in developing fluorine-free hydrocarbon-based ionomers for more advanced fuel cells and electrolyzers.
Article
Chemistry, Multidisciplinary
Nanjun Chen, Sae Yane Paek, Ju Yeon Lee, Jong Hyeong Park, So Young Lee, Young Moo Lee
Summary: The study introduces a new technology of PFAP-based AEMWEs with higher performance than PEMWEs, highlighting the importance of high water diffusivity and ion conductivity.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Review
Chemistry, Physical
Hien Nguyen, Carolin Klose, Lukas Metzler, Severin Vierrath, Matthias Breitwieser
Summary: This article summarizes the recent developments in the application of novel hydrocarbon-based ionomers in electrochemical energy devices. These ionomers have the potential to overcome the limitations of PFSAs and demonstrate promising performance. The necessary key innovations for the application of hydrocarbon-based ionomers in fuel cells and electrolyzers are also discussed.
ADVANCED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Mehrdad Mashkour, Mostafa Rahimnejad, Mahdi Mashkour, Francesca Soavi
Summary: A novel membrane electrode assembly (MEA) was fabricated and evaluated as an air-cathode in a single-chamber microbial fuel cell (MFC), showing higher performance in electricity generation and wastewater treatment at a lower cost compared to a PTFE-based gas diffusion electrode (GDE).
Article
Chemistry, Applied
Sung Min Moon, Jae Eun Heo, Jisoo Jeon, Taesik Eom, Daseul Jang, Kyeonga Her, Whirang Cho, Kyungbae Woo, Jeong Jae Wie, Bong Sup Shim
Summary: The study investigates the effect of disintegration process conditions on the structure and properties of tunicate cellulose nanofibers, revealing different mechanical and thermal conductive properties in the resulting nanostructured films under varying hydrolysis times. Nanolayered CNF films show highly anisotropic thermal conductivities, offering practical material strategies for emerging engineering applications.
CARBOHYDRATE POLYMERS
(2021)
Article
Energy & Fuels
Hien Nguyen, Julian Stiegeler, Hannes Liepold, Claudia Schwarz, Severin Vierrath, Matthias Breitwieser
Summary: Recent advances in hydrocarbon-based proton-exchange membrane fuel cells have improved voltage recovery (VR) through optimizing materials. This study introduces a VR protocol specifically designed for hydrocarbon-based fuel cells, resulting in a 100% increase in mass activity after only 1 hour. The proposed protocol is also effective for Nafion catalyst layers and significantly reduces conditioning time.
Article
Chemistry, Physical
Chencheng Ye, Susu Bi, Pengfei Liao, Yanni Huang, Xiao Lin, Yu Wang, Linjuan Zhang, Jian-Qiang Wang
Summary: In this study, an alternative method for designing a highly active and stable fuel electrode for solid oxide cells (SOCs) application is proposed by improving the slurry dispersant effect. By optimizing the dispersants within the ink, the microstructure can be improved, leading to improved electrochemical performance of the resulting SOCs.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Shijing Luo, Yifei Wang, Tsz Ching Kong, Wending Pan, Xiaolong Zhao, Dennis Y. C. Leung
Summary: A flexible paper-based fuel cell with a novel cell architecture has been proposed in this research, showing significantly improved performance compared to traditional cells with a maximum power density and current density achieved at high levels. The cell also demonstrates stable long-term discharge capabilities and can be efficiently manufactured through 3D printing.
JOURNAL OF POWER SOURCES
(2021)
Article
Materials Science, Biomaterials
Alireza Mahjoubnia, Masoumeh Haghbin Nazarpak, Akbar Karkhaneh
Summary: Hydrogel/fiber composites (HFC) improved by bio-related modifications have been developed as promising scaffolds for regenerative medicine. The study synthesized conductive HFC scaffolds by adding collagen-grafted poly-L-lactic acid fibers and genipin, and evaluated their structural, electrical, and functional performances. The results showed that the scaffold is biocompatible and suitable for electrically responsive tissue applications.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2022)
Article
Engineering, Biomedical
Reza Karimi-Soflou, Elham Mohseni-Vadeghani, Akbar Karkhaneh
Summary: The study successfully fabricated composite nanofibrous scaffolds with antioxidant and osteogenic properties, showing potential applications in bone tissue engineering based on antioxidant activity testing, mechanical strength testing, and biocompatibility evaluations.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2022)
Article
Chemistry, Analytical
Joan Teixidor, Salvatore Novello, Daniel Ortiz, Laure Menin, Hilal A. Lashuel, Arnaud Bertsch, Philippe Renaud
Summary: The paper introduces a new Droplet on Demand (DoD) sampling method for collecting molecules from brain extracellular fluid in mice, allowing fast and accurate glucose quantification without transient regimes. This technique has the potential to be valuable for research on neurodegenerative diseases.
ANALYTICAL CHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Clementine Lipp, Laure Koebel, Arnaud Bertsch, Michael Gauthier, Aude Bolopion, Philippe Renaud
Summary: We present a microfluidic dielectrophoretic-actuated system for trapping single cells and forming controlled cell aggregates. We propose a novel method to characterize the efficiency of dielectrophoretic trapping, taking into account both flow speed and heat generated by the traps as limiting factors for safe cell manipulation. Experimental comparison of two original designs with different manufacturing processes identifies the most efficient design, which is validated by monitoring cell membrane integrity using fluorescence imaging. We suggest design rules for adapting the traps to multiple-cell trapping, and experimentally demonstrate the formation of controlled size and composition aggregates using two different cell types. This study provides a simple manufactured tool for the controlled manipulation of particles in the composition of multicellular assemblies.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Dorian Herle, Philippe Renaud, Olivier Parriaux
Summary: This study explores the reflection switching concept of a free-space wave impinging on an array of dielectric or semiconductor pillars. By splitting the pillars and creating low-index gaps between them, the reflection of the wave can be effectively canceled. The study also designs a gapless experimental model and a pillar structure with nanometer-thick low-index gaps, achieving a broad reflection maximum at a specific wavelength and no reflection peak over a wide wavelength range.
JOURNAL OF PHYSICS COMMUNICATIONS
(2022)
Article
Polymer Science
Sajedeh Khorshidi, Akbar Karkhaneh
Summary: This study investigates the diffusion coefficients of different polyesters and calcium peroxide composites using molecular dynamics simulation. The PLA/CPO composite is prepared using electrospinning and aminolysis methods, and its elemental analysis and TGA results confirm the uniform distribution and loading efficiency of CPO. Evaluation of aminolysis time and PLA concentration reveals that 150 minutes of aminolysis and 13% PLA concentration result in uniformly shaped microparticles. Oxygen release measurement demonstrates that microparticles with 13% PLA exhibit the slowest release rate and lowest burst release.
IRANIAN POLYMER JOURNAL
(2023)
Article
Engineering, Biomedical
Shiva Taheri, Zahra Sadat Ghazali, Leila Montazeri, Fatemeh Ale Ebrahim, Jafar Javadpour, Khorshid Kamguyan, Esben Thormann, Philippe Renaud, Shahin Bonakdar
Summary: The effect of cell imprinted substrates on the differentiation of ADSCs was investigated. The results showed that cell imprinted substrates can induce differentiation signals better than engineered lithographic substrates. Therefore, the patterns must include nano-topographies to have reliable and reproducible engineered substrates.
BIOMEDICAL MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Fatemeh Navaee, Philippe Renaud, Alexander Kleger, Thomas Braschler
Summary: Biochemical and biophysical properties of cardiac tissue can be manipulated by using a blend of decellularized extracellular matrix (dECM) from porcine ventricular tissue and fibrinogen, which has shown enhanced cardiogenic differentiation and beating motion in a 3D cardiac cell culture model.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Mina Shabani Samghabadi, Akbar Karkhaneh, Ali Asghar Katbab
Summary: In recent years, materials with piezoelectric and electroconductive behavior have gained interest for bone scaffolds due to their potential in mimicking bone tissues. This study focuses on preparing three-dimensional laminated scaffolds using piezoelectric PVDF/PLA nanofibrous mats embedded into porous oxidized alginate/gelatin/PPy-g-gelatin hydrogel precursor structures, resulting in a fiber-hydrogel scaffold. The prepared scaffold exhibits enhanced mechanical properties, electrical conductivity, and piezoelectricity, making it suitable for bone tissue engineering applications.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Physics, Fluids & Plasmas
Jiande Zhou, Yves-Marie Ducimetiere, Daniel Migliozzi, Ludovic Keiser, Arnaud Bertsch, Francois Gallaire, Philippe Renaud
Summary: This work reports a novel breakup regime in the widely studied T-junction geometry, where the pinch-off occurs laterally in the two outlet channels, leading to the formation of three daughter droplets. It is driven by surface tension, and a design rule for the T-junction geometry is proposed. A model is developed to predict the formation and growth of an underlying carrier fluid pocket that accounts for this lateral breakup mechanism.
PHYSICAL REVIEW FLUIDS
(2023)
Article
Cell Biology
Fatemeh Navaee, Niloofar Khornian, David Longet, Sarah Heub, Stephanie Boder-Pasche, Gilles Weder, Alexander Kleger, Philippe Renaud, Thomas Braschler
Summary: Alignment of cardiomyocytes in myocardium tissue is important for the functions of the myocardium. This paper proposes a simple method to align cells in a 3D in vitro heart model using microfabricated PDMS grooves. The functionality of the model was evaluated by comparing beating rates between aligned and non-aligned structures. This model has potential applications in drug screening, tissue engineering, and heart-on-chip studies.
Article
Biotechnology & Applied Microbiology
Fatemeh Navaee, Philippe Renaud, Niccolo Piacentini, Mathilde Durand, Dara Zaman Bayat, Diane Ledroit, Sarah Heub, Stephanie Boder-Pasche, Alexander Kleger, Thomas Braschler, Gilles Weder
Summary: Myocardium is composed of cardiac cells that interact with their environment and their structure affects the physiology, function, and metabolism of cardiac tissue. This study aims to understand the mechanism of generating off-axis alignments in the myocardium and develop a reliable in vitro cardiac model. By applying cyclic mechanical stimulation and groove constraint, the researchers were able to engineer off-axis alignments similar to the helical arrangements observed in vivo. The study also shows that cyclical stretching supports cell survival and development, improving the model's function.
BIOENGINEERING-BASEL
(2023)
Review
Engineering, Biomedical
Nadia Shafaei, Sajedeh Khorshidi, Akbar Karkhaneh
Summary: Although nanoparticles and nanocarriers are effective in delivering drug molecules, their short-term effects are limited due to rapid removal from the circulatory system caused by interaction with in vivo barriers, especially the immune barrier. Polymer coatings can enhance their effectiveness and durability by concealing them from the immune system. Different types of coatings, such as synthetic polymers, polysaccharides, and zwitterionic polymers, have unique properties that make them suitable for producing stealth drug delivery nanocarriers. This review article explains the importance of diverse polymer coatings in determining the fate of drug nanocarriers, introduces different types of these coatings, and describes methods to analyze the nanocoatings and determine nanoparticle stability in the body.
JOURNAL OF BIOMATERIALS APPLICATIONS
(2023)
Article
Chemistry, Analytical
Nicolas Maino, Arnaud Bertsch, Philippe Renaud
Summary: For more than 30 years, carbon fiber microelectrodes have been the gold standard for measuring processes at the synaptic level. However, these microelectrodes have limitations in terms of low throughput and detecting molecules due to their featureless nature. In this study, a new electrochemical sensor with insulated protruding volcano-shaped tips is introduced, which allows confined and parallel recordings of exocytosis from adherent cells. The sensor reveals faster exocytosis kinetics, potentially due to the perturbation of the plasma membrane by the sensor's topography, suggesting that substrate geometry can manipulate exocytosis kinetics and open up new avenues for studying synaptic processes.
Article
Materials Science, Biomaterials
Misagh Saadipour, Akbar Karkhaneh, Masoumeh Haghbin Nazarpak
Summary: In this study, a nanofibrous scaffold was created by electrospinning a blend of PCL and gelatin. The resulting nanofibers were uniform in morphology and free of beads, with an average diameter of 320 +/- 80 nm. Curcumin at different concentrations was loaded into PLA microparticles using the electrospraying process. The particles showed spherical morphology with an average diameter of 3.7 μm. The scaffold was cross-linked with glutaraldehyde vapor and exhibited a slow release profile over a period of 35 days. Mechanical and cell assessment studies demonstrated that the scaffold had great potential for skin applications.
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
(2022)
Article
Chemistry, Physical
Mei Gui Vanessa Wee, Amutha Chinnappan, Runxin Shang, Poh Seng Lee, Seeram Ramakrishna
Summary: Cooling processes, from residences to industries, require a lot of energy and are essential. This study introduces MIL-101(Cr), a new desiccant, to heat exchangers for more efficient cooling. By improving the synthesis method and using a special binder, the MIL-101(Cr)-coated heat exchanger shows improved water uptake capacity and lower regeneration temperature.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ao Zhen, Guanyu Zhang, Ao Wang, Feng Luo, Jiehua Li, Hong Tan, Zhen Li
Summary: In this study, a solvent-free microemulsion method was used to synthesize waterborne polyurethane (WPU) material with high retention of mechanical properties and satisfactory water absorption rates. The material showed excellent biocompatibility and has broad application potential in the field of biomedicine.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Wensong Ge, Rui Wang, Xiaoyang Zhu, Houchao Zhang, Luanfa Sun, Fei Wang, Hongke Li, Zhenghao Li, Xinyi Du, Huangyu Chen, Fan Zhang, Huifa Shi, Huiqiang Hu, Yongming Xi, Jiankang He, Liang Hu, Hongbo Lan
Summary: This paper reviews the research on the surface tension of eutectic gallium-indium alloys (EGaIn) in the field of stretchable electronics. It covers the principles of oxide layer formation, factors influencing surface tension, and methods for surface modification of liquid metals. The paper also discusses the applications of EGaIn surface modification in different fields and highlights the challenges still faced and the future outlook.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiang Song, Lianghao Jia, Zhengen Wei, Tao Xiang, Shaobing Zhou
Summary: This paper provides an overview of the application, preparation, and role of biomimetic structures in solar evaporators with improved evaporation rate and lifetime.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Wei Yuan, Qian Deng, Dong Pan, Xiang An, Canyang Zhao, Wenjun Su, Zhengmin He, Qiang Sun, Ran Ang
Summary: Optimizing the performance of n-type PbTe thermoelectric materials is crucial for practical applications. Dynamic doping has emerged as an effective method to improve the performance of n-type PbTe by optimizing the carrier concentration. This study demonstrates the significance of Mn alloying in enhancing the performance of Ag-doped n-type PbTe by creating a hierarchical structure to suppress thermal transport and improving the Seebeck coefficient.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Review
Chemistry, Physical
Xiaoyan Wang, Meiqi Geng, Shengjun Sun, Qian Xiang, Shiyuan Dong, Kai Dong, Yongchao Yao, Yan Wang, Yingchun Yang, Yongsong Luo, Dongdong Zheng, Qian Liu, Jianming Hu, Qian Wu, Xuping Sun, Bo Tang
Summary: This review provides a comprehensive analysis of the progress and challenges in the field of bifunctional electrocatalysts and efficient electrolyzers for seawater splitting. It summarizes recent advancements and proposes future perspectives for highly efficient bifunctional electrocatalysts and electrolyzers.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Jason K. Phong, Christopher B. Cooper, Lukas Michalek, Yangju Lin, Yuya Nishio, Yuran Shi, Huaxin Gong, Julian A. Vigil, Jan Ilavsky, Ivan Kuzmenko, Zhenan Bao
Summary: Dynamic block copolymers (DBCPs) combine the phase separation of traditional block copolymers with the supramolecular self-assembly of periodic dynamic polymers, resulting in the spontaneous self-assembly of high aspect ratio nanofibers with well-ordered PEG and PDMS domains. DBCPs with a periodic block sequence exhibit superior properties compared to those with a random sequence, including delayed onset of terminal flow and higher ionic conductivity values.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Hong Kyu Lee, Yasaswini Oruganti, Jonghyeon Lee, Seunghee Han, Jihan Kim, Dohyun Moon, Min Kim, Dae-Woon Lim, Hoi Ri Moon
Summary: This study reports the moisture-triggered proton-conductivity switching behavior in Zn5FDC MOFs induced by the presence and absence of coordinating solvents, which illustrates the significant role of coordinating solvents in conductivity variation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Bommaramoni Yadagiri, Sanjay Sandhu, Ashok Kumar Kaliamurthy, Francis Kwaku Asiam, Jongdeok Park, Appiagyei Ewusi Mensah, Jae-Joon Lee
Summary: The molecular engineering of the interface modulator between the perovskite and hole transporting material is crucial for achieving satisfactory performance and stability of perovskite solar cells. In this study, cruciform-shaped dual functional organic materials were employed as surface passivation and hole transporting interfacial layers in perovskite solar cells. The use of these materials significantly improved the power conversion efficiency of the solar cells.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Joaquin Martinez-Ortigosa, Reisel Millan, Jorge Simancas, Manuel Hernandez-Rodriguez, J. Alejandro Vidal-Moya, Jose L. Jorda, Charlotte Martineau-Corcos, Vincent Sarou-Kanian, Mercedes Boronat, Teresa Blasco, Fernando Rey
Summary: This study investigates the synthesis of all-silica RTH zeolites using triisopropyl(methyl)phosphonium as the organic SDA. The results show the formation of two distinct crystalline phases under different synthesis conditions, with fluoride bonding to different silicon sites. It demonstrates the possibility of controlling the placement of fluoride in RTH zeolites through synthesis conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Luyao Zheng, Cong Liu, Wenbiao Zhang, Boxu Gao, Tianlan Yan, Yahong Zhang, Xiaoming Cao, Qingsheng Gao, Yi Tang
Summary: This study successfully improves the efficiency and stability of water splitting by constructing a heterostructured electrocatalyst. The catalyst shows extraordinary performance and could offer an effective approach for the sustainable production of hydrogen.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Carlos A. Campos-Roldan, Raphael Chattot, Frederic Pailloux, Andrea Zitolo, Jacques Roziere, Deborah J. Jones, Sara Cavaliere
Summary: This study systematically evaluated the hydrogen evolution/oxidation reactions on a series of Pt-rare earth nanoalloys in alkaline media, and identified the effect of the lanthanide contraction. The experimental results revealed that the chemical nature of the rare earth modulates the adsorption and mobility of oxygenated-species, enhancing the kinetics of the reactions.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Sara Frank, Mads Folkjaer, Mads L. N. Nielsen, Melissa J. Marks, Henrik S. Jeppesen, Marcel Ceccato, Simon J. L. Billinge, Jacopo Catalano, Nina Lock
Summary: This study investigates the thermal decomposition of ZIF-67 and its correlation with structural evolution and electrocatalytic performance. The researchers used in situ X-ray absorption spectroscopy and total scattering techniques to analyze the process. They found that disorder emerges at lower temperatures and that extending the pyrolysis process can result in materials with superior electrochemical properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Physical
Ting Wang, Ruijuan Zhang, Pengda Zhai, Mingjie Li, Xinying Liu, Chaoxu Li
Summary: This study successfully exfoliated COFs using a simple electrochemical method, which resulted in improved photocatalytic performance for COFs and enriched the fabrication approach of COF exfoliation.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)