A5028009082- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Electrochemical Analysis and Applications
- CO2 Reduction Techniques and Catalysts
- Carbon dioxide utilization in catalysis
- Machine Learning in Materials Science
- Ammonia Synthesis and Nitrogen Reduction
- Catalysts for Methane Reforming
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- Metalloenzymes and iron-sulfur proteins
- Catalysis and Hydrodesulfurization Studies
- Origins and Evolution of Life
- Catalysis and Oxidation Reactions
- Machine Learning in Bioinformatics
- Metal Extraction and Bioleaching
- Biological Research and Disease Studies
- Fuel Cells and Related Materials
- Photosynthetic Processes and Mechanisms
- Photoreceptor and optogenetics research
- Electrochemical sensors and biosensors
- Enzyme function and inhibition
- Microbial Metabolic Engineering and Bioproduction
- Advanced Thermoelectric Materials and Devices
- Advancements in Battery Materials
Ruhr University Bochum
2023-2024
Tokyo Institute of Technology
2019-2024
Life Science Institute
2019-2024
Meguro Parasitological Museum
2020
Abstract For a carbon‐neutral society, the production of hydrogen as clean fuel through water electrolysis is currently great interest. Since laborious energetic reaction, it requires high energy to maintain efficient and sustainable hydrogen. Catalytic electrodes can reduce required minimize costs. In this context, herein, bifunctional electrocatalyst made from iron nickel sulfide (FeNi 2 S 4 [FNS]) for overall electrochemical splitting introduced. Compared Fe NiO (FNO), FNS shows...
Pentlandites are one possible cost-effective alternative to platinum group metals for green hydrogen production. This study delves into the catalytic performance of trimetallic pentlandite systems, exploring influence selenium concentration and material form on their efficiency by combining investigation materials in various forms (powder catalysts, ingots, highly densified pellets) with a computational investigation. The experimentally observed solubility limit was clarified based formation...
Ag, Cu and Sn based electrocatalysts promise high CO2 reduction kinetics effiencies on gas diffusion electrodes. Cu, sulfide catalysts in particular may offer altered electronic properites and...
Thioesters and peptide ligated [Fe–S] clusters can be synthesized simultaneously from thioacetic acid in an aqueous one-pot reaction.
Abstract Despite considerable efforts to develop electrolyzers for energy conversion, progress has been hindered during the implementation stage by different catalyst development requirements in academic and industrial research. Herein, a coherent workflow efficient transition of electrocatalysts from basic research application readiness alkaline oxygen evolution reaction is proposed. To demonstrate this approach, La 0.8 Sr 0.2 CoO 3 selected as catalyst, its electrocatalytic performance...
Electrochemically converting CO2 to renewable synthons is steadily becoming a globally scalable and important utilization technology. Nevertheless, most industrial endeavors employ catalysts based on metallic Ag or Au, with few catalytically competitive alternatives, showing similar activity, high mass cost efficiency. Similarly, this effort hindered by insufficient testing of promising materials in application-oriented conditions. We herein present holistic pathway starting from the...
Abstract Electrochemical hydrogenation reactions offer a green and sustainable production pathway for both bulk fine chemicals employed in the modern chemical industry. However, optimizing such systems can be tremendously challenging due to number of variables that potentially influence overall performance. The tailored scalable electrode fabrication via catalytic inks especially difficult complex interplay material process during formulation their deposition on suitable substrates. As...
Multicomponent, transition-metal selenides characterized by TM3Se4 stoichiometry, and monoclinic pseudospinel structure were recently reported as promising catalysts for water-splitting processes. However, the initial data indicate that simple increase in number of composing elements might not be sufficient to maximize their performance, with systematic screening different regions multicomponent phase diagrams proving most effective approach. Thus, this work, a series highly conductive...
Abstract Hydrogenation reactions are a major route of electron and proton flow on Earth. Interfacing geology organic chemistry, hydrogenations occupy pivotal points in the Earth’s global geochemical cycles. Some examples hydrogenation Earth today include production consumption methane both abiotic biotic reactions, reduction protons hydrothermal settings, biological synthesis degradation fatty acids. were likely important for prebiotic chemistry early Earth, serve as one fundamental reaction...
Metal sulfides are promising alternatives to noble metal electrocatalysts for water‐based hydrogen evolution. Pentlandites, notably, exhibit high activity in acidic environments. To explore their potential alkaline conditions, pentlandite electrodes tested both conventional three‐electrode setups and scaled up a 12.6 cm membrane electrode assembly (MEA). Optimized pentlandites with stochiometry of , containing Fe, Ni, Co, show reduced overpotentials evolution higher Fe Ni contents. However,...
Using a mechanical synthesis method in the form of ball milling and an additional annealing step, novel accelerated route for thiospinels toyohaite (Ag
The engineering of a pentlandite (Fe 3 Co Ni S 8 , FCNS) doped with silicon (FCNSSi) for water splitting is demonstrated. At 500 mA cm −2 two-electrode zero-gap cell assembly demonstrates the FCNSSi catalyst's promise practical applications.
Detection of Fe 3+ and polysulfides during FeS oxidation revealing both metal, ligand paths en route to the formation greigite pyrite.
Electrochemical hydrogenations are becoming increasingly important in today’s world, representing a gateway reaction for the sustainable production of base and fine chemicals. However, finding optimal conditions such systems can be challenging due to vast variety adjusting screws that influence overall performance reactor. Especially tailored electrode fabrication is one most complex, but also parts scalable electrochemical cells. Combining catalyst binder materials, optimizing their...
Abstract This study presents the correlation between electrolyte pH, surface morphology, chemical speciation and electro‐catalytic oxygen evolution activity of additive‐free electrodeposited NiFe catalysts for application in anion exchange membrane water electrolysis. Spherical morphologies were identified at pH 0, shifting towards honey‐combed structures 4 with increasing area, especially 3. Further, was found to influence composition activity. Enhanced OER noted 2 overpotentials 214 mV 10...
The hydrogenation of organic substances is a central process type in various industries [1] . usage gaseous hydrogen, which primarily sourced from fossil fuels, entails the release CO 2 during its production. In addition, hydrogen also carries safety risk, should be reduced as much possible. An alternative approach direct electrochemical with water or other protic liquids, where required produced situ and directly utilized. If this driven by renewable energy, it represents sustainable...
Abstract In recent years, CO 2 electrolysis, particularly the electrochemical reduction of to in zero‐gap systems, has gained significant attention. While Ag‐coated gas diffusion electrodes are commonly used state‐of‐the‐art heterogenized molecular catalysts like bis‐coordinated homoleptic silver(I) N,N‐bis(arylimino)‐acenaphthene (Ag‐BIAN) complexes emerging as a promising alternative due their tunability and high mass activity. this study, influence ink composition on performance...
A terpyridine-Cu II complex, electrochemically reduces NO 2 − to NO. Mechanistic studies show reduction from Cu I and causes nitrite linkage isomerism: –ONO (nitrito) –NO (nitro).
Electrochemically converting CO2 to renewable synthons is steadily becoming a globally scalable and important utilization technology. Nevertheless, most industrial endeavors employ critical-materials catalysts based on Ag or Au, with catalytically competitive alternatives, showing both similar activity high mass cost-efficiency remaining elusive. Similarly, this effort hindered by insufficient testing of promising materials in application-oriented conditions. We herein present holistic...
Abstract Decreasing the catalytic loading and complexity of electrocatalysts for reduction CO 2 is a critical necessity towards globally generating carbon-negative synthons. This effort therefore calls development not only more active catalysts per employed g but also financially sound ones. Notably, molecular allow tuning electronic geometric environment around single-atom centers. Nevertheless, synthetic complexity, cost electrochemical instability still hamper their large-scale...
This study investigates the modification of materials by doping with foreign elements to enhance electrocatalytic activity and focuses on engineering an inorganic material composed transition heterometal-rich pentlandite (Fe3Co3Ni3S8, FCNS) doped silicon (FCNSSi) as a bifunctional catalyst for overall electrochemical water splitting process. The FCNSSi electrode exhibits remarkable catalytic oxygen evolution reaction (OER) hydrogen (HER). OER performance was evaluated in 1.0 M KOH solution,...