Articles tagged with Electrodes
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A new material, sodium carbo-hydridoborate, improves the performance of solid-state sodium batteries, making them more sustainable and durable. The ideal pressure to be applied to the battery for efficient operation has also been defined.
Researchers have identified a class of calcium-based cathode materials that show promise for high-performance rechargeable batteries. By running quantum mechanics simulations, the team pinpointed cobalt as a well-rounded transition metal for a layered Ca-based cathode.
A study of continuous monthly mortality data found that excess deaths associated with COVID-19 reached greater peaks than most other periods of excess deaths since 1918. The relative excess of deaths in 2020 was 12.5% in Switzerland, 8.5% in Sweden, and 17.3% in Spain.
Researchers from Waseda University have developed an alternative technique, sampled current voltammetry (SCV), to accurately determine the activity of electrocatalysts used in water-splitting reactions. The study shows that SCV can provide reliable measurements of electrocatalytic performance at constant steady-state applied voltages.
A team of researchers from Osaka University has developed a simple system based on electrochemical reactions that can perform complex calculations. The system uses polyoxometalate molecules and deionized water to process information and solve nonlinear problems.
Researchers developed a method to directly bond gold electrodes onto separate ultra-thin polymer films without adhesives or high temperatures. The new technique, called water-vapor plasma-assisted bonding, creates stable bonds between gold electrodes printed into ultra-thin polymer sheets.
A research team at Toyohashi University of Technology demonstrates a new substrate structure that enables the excitation and detection of high-intensity broadband spin waves, even when miniaturized. The YIG-on-metal (YOM) structure achieves broader frequency bandwidth and higher intensity than conventional electrode structures.
Researchers developed a green synthesis method for ammonia production using green tea as a reducing agent. The study found that the optimized sample showed 2.93-fold enhanced photocatalytic activity and increased NH3 selectivity, outperforming bulk g-C3N4 under simulated sunlight irradiation.
A new theoretical model of supercapacitors takes into account cation properties to increase electric differential capacitance. The authors believe this will lead to the creation of more powerful energy sources in the future.
Scientists at TU Wien have developed a novel germanium-based transistor with the ability to perform different logical tasks, offering improved adaptability and flexibility in chip design. This technology has potential applications in artificial intelligence, neural networks, and logic circuits that work with more than just 0 and 1.
A new diagnostic tool for breast cancer uses a low-voltage electrical current to detect changes in lymphatic interstitial fluid, showing 70% effectiveness in predicting cancer presence. The device can be used repeatedly on women of any age, providing an additional diagnostic option for younger patients and those with dense breast tissue.
A research team from Dalian Institute of Chemical Physics discovered the critical surface/interface behaviors governing ESDs' operation and failure. They visualized atmosphere-dependent relaxation and failure processes using in situ Raman, X-Ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS).
Researchers at Shinshu University developed a novel detection principle for stimulants, including methamphetamine, using electrochemiluminescence (ECL) emission. The method allows for accurate and selective screening of stimulants with high sensitivity and selectivity.
Researchers at Linköping University have developed a concept for large-scale energy storage that is safe, cheap and sustainable. The technology uses wood-based electrodes and a new type of water-based electrolyte, achieving a world record for energy storage with organic electrodes in water-based electrolytes.
Researchers developed a technology that accurately detects lies by analyzing facial muscle contractions, achieving a success rate of 73%. The study identified two distinct groups of 'liars' based on cheek muscle and eyebrow activation, with potential implications for real-life deception detection.
Researchers at University of Illinois have developed an electrochemical process to recover valuable metals from spent lithium-ion battery electrodes. The method produces high-purity coatings of cobalt and nickel with approximate purities of 96.4% and 94.1%, respectively.
Researchers developed a strategy to achieve ultra-high loading of single metal atom sites on cobalt oxide support, stabilizing Rh and other noble metals. The strained surface showed exceptional UOR activity and stability, requiring lower working voltage than commercial Pt and Rh catalysts.
Researchers created a customized device that targets unique brain circuits associated with depression, providing immediate relief. The approach uses neural biomarkers to personalize therapy and has shown long-term efficacy in treatment-resistant patients.
A team of researchers has developed a low-cost and low-waste device that uses Tootsie Roll candy as an electrode to monitor ovulation status or kidney health. The sensor works by detecting changes in salt levels in saliva, with preliminary tests showing promising results.
Researchers at KAUST have developed a new type of wireless strain sensor that offers improved sensitivity and accuracy. The sensor uses fragmented electrodes to detect changes in electrical resistance or capacitance, allowing for real-time monitoring of material strains.
Researchers found that shrinking waveforms on electrocardiograms can help identify high-risk patients with COVID-19 or influenza, allowing for more aggressive monitoring and treatment. The study also showed that this technique may be particularly useful in overwhelmed systems where timely intervention is crucial.
Researchers have developed a new interface technology that can provide natural sensory feedback from robotic prosthetics to amputees, reducing abnormal sensations and cognitive burden. The innovation uses ultra-small recording sites and molecular guidance cues to stimulate sensory axons selectively, improving control of robotic limbs.
Scientists create a flexible supercapacitor using wrinkled titanium carbide nanosheets that maintains its ability to store and release electronic charges after repetitive stretching. The device has a high energy capacity comparable to existing MXene-based supercapacitors, but with extreme stretchability up to 800% without cracking.
Researchers developed a lightweight and flexible passive air-breathing PEMFC with simplified components. The new design allows for easy assembly and folding, reducing the number of parts and increasing power output when connected in series.
Scientists at Tokyo University of Science develop a new methodology to investigate the elusive electric double layer (EDL) effect in all-solid-state batteries. The study reveals that the EDL effect is dominated by the electrolyte's composition and can be suppressed through charge compensation, leading to improved performance.
Researchers from Pusan University developed a super-stretchable, deformable, and durable material for 'super-flexible' alternating current electroluminescent devices. The material was successfully applied in devices that functioned with up to 1200% elongation, displaying stable luminescence over 1000 cycles.
A study found that transcranial stimulation can increase the benefits of aerobic exercise and improve gait in Parkinson's patients. The treatment uses a weak current delivered by electrodes placed over specific brain regions, activating the pre-frontal cortex.
NTU scientists create soft and stretchable battery powered by human perspiration, suitable for wearable devices. The battery generates electricity in the presence of sweat, providing a sustainable alternative to conventional batteries.
Researchers from Terasaki Institute for Biomedical Innovation developed a method to fabricate ultrathin gold shells around silver nanowires, improving their stability and effectiveness. The gold-coated nanowires showed superior durability and performance in various tests, outperforming commercial nanowires.
Researchers have developed a flexible and wearable X-ray detector using metal-organic frameworks (MOFs) that don't contain harmful heavy metals. The device shows high-sensitivity sensing and imaging capabilities, making it suitable for various radiation monitoring and medical imaging applications.
Researchers at INRS and Université de Montréal are developing new electrodes based on nanostructured materials to degrade chemical compounds, including persistent organic pollutants (POPs) like PFAS. The project aims to create innovative solutions to decontaminate waters containing harmful chemicals.
Researchers at Ritsumeikan University have developed a novel technique to individually select and control tiny water droplets in lab-on-a-chip applications. The method uses electrowetting-on-dielectric technology to make individual droplets stand taller, allowing for selective contact and transfer of chemicals or cells.
Researchers develop underwater plasmas using high-voltage pulses, creating extreme conditions with pressures and temperatures similar to the Pacific Ocean's deepest point. The ignition process challenges conventional theories and demonstrates the potential for re-oxidising catalytic surfaces in electrochemical cells.
Researchers at Northwestern and George Washington universities developed a wireless, battery-free pacemaker that disappears after use. The device wirelessly harvests energy from an external antenna, eliminating the need for bulky batteries and rigid hardware.
A five-nanometer-thick layer of silver and copper outperforms conventional indium tin oxide in OLED displays, freeing up 20% more light. This innovation enables devices to maintain brightness while using less power, extending battery life and making displays more energy-efficient.
Researchers developed unitized regenerative fuel cells with improved hydrophilic and hydrophobic properties, increasing hydrogen generation efficiency by 2-fold and power generation efficiency by 4-fold. The devices can efficiently transport water and gas, improving performance and round-trip efficiency.
Researchers design new stimulation protocol for optic nerve stimulation to produce consistent and meaningful visual sensations. They use machine learning approaches to optimize protocols, which have shown promising results in artificial neural networks and psychophysical tests.
Researchers have measured the super-slow process of oxygen loss in lithium-ion batteries, revealing how it changes the electrode's structure and chemistry over time. This new understanding could lead to the development of new ways to engineer electrodes and prevent oxygen loss-related degradation.
Researchers have developed a printing technique to fabricate flexible supercapacitors, which can be bent, stretched, and twisted without losing electrochemical function. The printed devices use printable electrodes and functional inks, offering flexibility and low cost for various applications.
Researchers at KAUST developed a new molecular coating that significantly enhances the performance of organic photovoltaic cells, outperforming current materials like PEDOT:PSS. The coating increases efficiency by reducing electrical resistance, improving hole transport, and allowing more light to pass through.
Scientists have discovered that water molecules respond differently to an electrode surface, affecting how substances dissolve in water and chemical reactions occur. This breakthrough could lead to more accurate simulations for water desalination and potentially provide clean water faster, cheaper, and cleaner.
Researchers at Tokyo Institute of Technology have developed a new strategy to produce nanogap oxygen gas sensors with fast response times and low operating temperatures. The study presents a promising approach to create scalable gas-sensing platforms for various applications.
Researchers at Aarhus University developed biocompatible electrodes for electrical muscle stimulation and integrated them into medical support stockings. The study found that the stockings counteracted significant muscle loss in bedridden Covid patients, reversing a 10% decline in muscle mass after five to six days of hospitalization.
Researchers have developed semitransparent perovskite solar cells with high efficiency, enabling the creation of tandem devices that boost performance. The breakthrough could lead to transparent solar cells on windows, generating electricity from sunlight.
Researchers from Hefei Institutes of Physical Science created three manganese oxides with different Mn valences for high-capacity capacitive desalination. The results showed that these electrodes displayed high salt adsorption capacity and corresponding high salt adsorption rates surpassing other carbon materials.
A new strategy using massive molecular dynamics simulations has been proposed to improve the energy density and power density of EDLCs with ILs. By introducing ionophobicity, the researchers found a significant enhancement in overall performance, particularly with an extremely ionophobic electrode.
The new device measures cardiac micropotential energies in real-time, allowing early detection of abnormal heart function. It has shown sensitivity and potential to prevent sudden cardiac death, with successful tracking of a volunteer's heart function over four years.
Researchers at the University of Illinois have made significant breakthroughs in solid-state battery technology by controlling atomic alignment of materials to improve cathode-solid electrolyte interface stability. This enables more efficient charging and discharging cycles, leading to increased energy density and improved cycle life.
Researchers at Tokyo Tech have developed a straightforward strategy to produce organic thin films with controllable shapes and thickness distributions. The novel approach combines bipolar electrochemistry with electrolytic micelle disruption, resulting in inexpensive and customizable thin films.
Researchers at UCSF have discovered that brain waves travel both up and down the hippocampus, integrating messages from different areas of the brain. The finding suggests that brain waves can predict direction and may be a biomarker for cognitive activity.
Researchers from Ural Federal University developed a new method for detecting SARS-CoV-2 using electrochemical biosensors made of emerging materials. The sensors offer high sensitivity, specificity, and portability, making them a promising tool for virus detection. Further research is needed to commercialize the technology.
Researchers at Aalto University have discovered a new recycling method for lithium-ion batteries that replenishes spent lithium in electrodes without crushing or melting. This process saves valuable raw materials and likely energy compared to traditional methods, which extract metals from crushed batteries by melting or dissolving them.
A team of Carnegie Mellon University researchers has developed a novel microelectrode platform using 3D fuzzy graphene to enable richer intracellular recordings of cardiac action potentials. This advancement could revolutionize research on neurodegenerative and cardiac diseases, as well as the development of new therapeutic strategies.
A new cellulose nanofiber coating offers enhanced water resistance for flexible electronic devices, allowing them to withstand hundreds of bending cycles and underwater exposure. The coating's unique properties make it an ideal solution for medical devices used in emergency disaster response situations.
Researchers at MIT have discovered three ways bubbles form and release from porous electrodes, which can be controlled by adjusting surface treatment. The team found that the wettability of the surface is crucial in determining bubble formation, allowing for precise control over system performance.
University of Utah professor Tao Gao's discovery reveals physics behind lithium plating and enables prediction of its occurrence. The breakthrough could lead to faster charging times for electric vehicles and smartphones, reducing charging time from over an hour to under 10 minutes.
A team of researchers developed an ultrasmall needle-electrode technology called 'STACK' that enables high-quality brain recordings in mice with a high signal-to-noise ratio. The device offers improved biocompatibility and minimized tissue damage, making it suitable for long-term and safe chronic recordings.
The new battery has an energy density of 24 Wh/kg, ten times higher than previous prototypes, and a stiffness of 25 GPa. This breakthrough paves the way for 'massless' energy storage in vehicles and consumer electronics.
Researchers have created a more powerful, fast-charging supercapacitor with improved connectivity and recyclability using affordable tin. The material enhances the properties of cobalt oxide-based electrodes, leading to increased conductivity and promising practical applications.
Researchers at MIT have developed a way to prevent dendrite formation in solid-state lithium batteries, potentially unlocking the potential of high-powered batteries. The team created a semisolid electrode with a self-healing surface, allowing for high current densities without dendrites.