Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Oxygen-depolarized cathodes are a novel concept to be used in chlor-alkali electrolysis in order to generate significant energy savings. In these porous gas diffusion electrodes, hydrophilic and catalytically active microsized silver grains and a hydrophobic polytetrafluoroethylene cobweb structure are combined to obtain the optimum amount of three-phase boundaries between the highly alkaline electrolyte and the oxygen gas phase to achieve high current densities. However, the direct correlation between specific electrode structure and electrochemical performance is difficult. In this work, we report on the successful design and adaptation of an in-operando cell for X-ray (micro-computed tomography, synchrotron) and neutron imaging of an operating oxygen-depolarized cathode under realistic operation conditions, enabling the investigation of the electrolyte invasion into, and distribution inside, the porous electrode for the first time.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6514560 | PMC |
| http://dx.doi.org/10.3390/ma12081275 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An unconventional electrochemical/solid-state-device integrated system: an electrochemical sensor based on the PCPDTBT polaronic state.
Phys Chem Chem Phys
August 2025
Department of Engineering "Enzo Ferrari", DIEF, Univ. of Modena and Reggio Emilia, Via Vivarelli 10, 41125 Modena, Italy.
This work presents an unconventional device designed integration of an electrochemical cell and a solid-state circuitry resembling a triode-like configuration, referred to as an electrochemical transistor-like device. In our experimental setup, an organic semiconductor, poly[2,6-(4,4-bis-(2-ethylhexyl)-4-cyclopenta[2,1-;3,4-']dithiophene)--4,7(2,1,3-benzothiadiazole)] (PCPDTBT), serves both as the working electrode (WE) and as a "grid". "Gating" the grid is established by applying suitable electrochemical polarization to the polymer, exploiting a conventional three electrode electrochemical cell, which is placed directly on top of a device featuring three gold pads.
View Article and Find Full Text PDFFormation and Discharge of Zn Sponge Anodes, Followed by Synchrotron Hard X‑ray Imaging.
ACS Appl Energy Mater
July 2025
Department of Materials, Slovenian National Building and Civil Engineering Institute (ZAG), Dimičeva ulica 12, 1000 Ljubljana, Slovenia.
The fabrication of engineered Zn anodes often relies on different forms of ZnO as the material in direct contact with the alkaline aqueous electrolyte in the pristine assembled cell state. Of course, in this case, the as-assembled cell is in the discharged state and requires an initial charging step, or "formation", to generate active metallic Zn. The formation of ZnO-based anodes is a complex process the control of which calls for an in-depth understanding of electrochemical phase growth.
View Article and Find Full Text PDFMn-Co Dual-Metal Single-Atom Catalytic Sites for Boosted Redox Kinetics in Aqueous Polysulfide/Ferricyanide Flow Batteries.
Nano Lett
July 2025
Key Laboratory of Automobile Materials (Jilin University), Ministry of Education, and School of Material Science and Engineering, Jilin University, Changchun 130022, China.
The sluggish redox kinetics of NaS/NaS and the uncontrollable crossover of polysulfides often result in limited reutilization of active materials, hindering the practical scalable application of polysulfide/ferricyanide flow batteries. By leveraging the bidirectional manipulation of redox kinetics of active species, diatomic Mn and Co sites anchored on nitrogen-doped carbon encapsulated graphite carbon felt was prepared. And a progressive "optimized d-band model" was revealed, in which the tunable d-band centers of Mn and Co were, respectively, regulated to enable facile electron extraction and injection during the NaS-NaS redox; then the synergistic catalytic effect renders the matrix with bidirectional acceleration.
View Article and Find Full Text PDFWorkflow for systematic design of electrochemical in operando NMR cells by matching and field simulations with experiments.
Magn Reson (Gott)
November 2024
Institute of Energy Technologies, Fundamental Electrochemistry (IET-1), Forschungszentrum Jülich, Jülich, Germany.
Combining electrochemistry (EC) and nuclear magnetic resonance (NMR) techniques has evolved from a challenging concept to an adaptable and versatile method for battery and electrolysis research. Continuous advancements in NMR hardware have fostered improved homogeneity of the static magnetic field, , and the radio frequency field, , yet fundamental challenges caused by introducing essential conductive components into the NMR sensitive volume remain. Cell designs in EC-NMR have largely been improved empirically, at times supported by magnetic field simulations.
View Article and Find Full Text PDFInhibiting and rejuvenating dead lithium in battery materials.
Nat Rev Chem
August 2025
College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, China.
Lithium and other alkali-metal-based batteries are promising candidates for next-generation energy-storage technologies. However, such batteries suffer from limited lifespans caused by the continuous inactivation of their electrodes during operation and even storage, creating inactivated or 'dead' Li, which is a combination of electrically insulated metallic Li and solid-electrolyte interphases (SEIs). Numerous efforts have been devoted to uncovering the origins of this inactivation and how it could be mitigated.
View Article and Find Full Text PDF