Articles tagged with Cathodes
A research team found that voltage hysteresis in Li2RuO3 is attributed to different intermediate crystalline phases formed during charge and discharge processes, not irreversible structure changes. This discovery challenges conventional theory and has implications for developing high-energy-density lithium-ion batteries.
Researchers have developed a carbon-based cathode material that could replace cobalt and other scarce metals in lithium-ion batteries. The new composite cathode cycled safely over 2,000 times, delivered high energy density, and charged/discharged quickly.
Researchers have made significant strides in understanding the relationship between hydrogen partial pressure and PEMFC performance, revealing a pronounced decline in performance as hydrogen partial pressure decreased. The study aims to simplify fuel cell quality testing, cost reduction, and reduced safety requirements.
Researchers at Oak Ridge National Laboratory have developed a new, efficient, and environmentally-friendly solution for lithium-ion battery recycling using organic citric acid. This approach recovers critical metals like cobalt and lithium, reduces pollution and reliance on foreign sources, and eliminates the need for hazardous chemicals.
An international team at DTU has increased the durability of CO2 electrolyzers, enabling the conversion of captured CO2 into valuable green chemicals like ethylene and ethanol. The breakthrough could play a significant role in the green transition by reducing global CO2 emissions
Researchers from Tohoku University developed a special type of porous carbon sheet, graphene mesosponge sheet, which significantly improves the energy density and cycle stability in Li-O2 batteries. The GMS-sheet achieves high-performance standards with over 6300 milliampere-hours per gram.
A team of researchers at Hokkaido University has developed a new method to synthesize layered lithium cobalt oxide (LiCoO2) at low temperatures, reducing synthesis time from hours to minutes. The hydroflux process produces crystalline LiCoO2 with properties only marginally inferior to commercially available materials.
A novel strategy utilizing phosphorus nanolayers mitigates electrode-level heterogeneity in fast-charging lithium-ion batteries. The graphite-phosphorus composite exhibits consistent cycle retention, high Coulombic efficiency, and improved lithiation uniformity.
Researchers have developed a metal nanocluster-based separator for lithium-sulfur batteries, accelerating electrochemical kinetics and improving capacity and cycling stability. The technology has the potential to increase the adoption of sustainable energy storage systems, including electric vehicles and renewable energy.
Recent research highlights the excellent electrochemical performance of critical 3D printing materials in rechargeable batteries. The study outlines the typical characteristics of major 3D printing methods used in fabricating electrochemical energy storage devices and discusses crucial materials for 3D printing of rechargeable batterie...
A breakthrough in battery technology has been achieved by City University of Hong Kong, overcoming the persistent challenge of voltage decay in lithium-ion batteries. The new development stabilises a unique honeycomb-like structure within the cathode material, resulting in longer-lasting and more efficient batteries.
Researchers propose analysis protocol to evaluate feasibility of silicon-containing batteries with reduced particle size and uniform dispersion. The study finds promising results from innovative synthesis technology and initial efficiencies exceeding 90% with improved lifespan characteristics.
Researchers at Rice University have developed a high-yield, low-cost method for reclaiming metals directly from mixed battery waste. The new process uses the 'flash' technique to separate critical metals, reducing energy and acid consumption by up to 100-fold and lowering carbon dioxide emissions.
Researchers investigate the impact of cathode catalyst layer platinum loading on PEMFC electrode-membrane assembly durability. Low Pt content impairs oxygen reduction activity but doesn't affect degradation mechanisms.
Researchers discovered 'oxygen hole' formation in LiNiO2 cathodes accelerates degradation and release of oxygen. Computational studies revealed nickel charge remains stable while oxygen undergoes changes during charging.
Scientists identified structural origin of voltage hysteresis in manganese-rich NASICON-type cathodes and developed Mo-doping strategy to decrease defect concentration. This led to improved Coulombic efficiency and reversible capacity in Na-ion batteries.
Researchers from Tokyo Tech have developed a new strategy to produce solid electrolytes with enhanced lithium-ion conductivity, preserving their superionic conduction pathways. The proposed design rule enables the synthesis of high-entropy active materials for millimeter-thick battery electrodes.
Researchers at Washington University in St. Louis have developed an electrochemical device that can recover phosphorus fertilizer from municipal waste with high efficiency. The device achieved over 93% efficiency in recovering phosphorus and precipitating approximately 99% of it into solid form.
Scientists at Argonne National Laboratory discovered a new fluoride electrolyte that can protect lithium metal batteries against performance decline. The electrolyte maintains a robust protective layer on the anode surface for hundreds of cycles, enabling the battery to last longer.
A low-cost catalyst developed by Argonne National Laboratory can produce clean hydrogen from water at a lower cost, making it an ideal choice for replacing fossil fuels and reducing greenhouse gas emissions. The new catalyst uses cobalt instead of expensive iridium, significantly reducing the cost and increasing efficiency.
A team at Tohoku University has created a prototype calcium metal rechargeable battery that can handle 500 cycles of charging and discharging. The breakthrough employs a copper sulfide-based cathode and hydride-type electrolyte, demonstrating high stability and performance.
A new research project, LC-H2, will develop next-generation electrodes to boost energy efficiency in electrolysis. This will help reduce grey hydrogen's carbon footprint and increase the share of green hydrogen in European energy systems.
A new fluorine-containing electrolyte has been developed to perform well in sub-zero temperatures, addressing the issue of cold weather affecting electric vehicle battery effectiveness. The research demonstrates how to tailor the atomic structure of electrolytes for low-temperature applications.
Robert House, a Senior Research Fellow at Oxford University, has been selected as one of Forbes Magazine's prestigious 30 people to watch under 30 in Europe Science and Healthcare. He is working on developing innovative, sustainable Na-ion battery materials that promise to be significantly lower cost than conventional Li-ion batteries.
Researchers found that Fe-doped carbon nanofibers and Pt-doped carbon cloth cathodes yielded stable performances, with peak power densities of 25.5 mW m−2 and 30.4 mW m−2, respectively. Graphite felt cathodes demonstrated the best electrochemical performance but exhibited lower reproducibility and higher mass transport losses.
Researchers at Tohoku University have developed a zinc-air battery with an open circuit voltage of over 2V, overcoming the major bottleneck for metal-air batteries. By arranging acidic/alkaline electrolytes in tandem, they were able to generate a higher voltage and improve output power density.
A Cornell University-led collaboration has identified transient crystal defects as the cause of rapid degradation in sodium-ion batteries. The researchers used operando X-ray imaging to visualize these defects while the battery was in operation, revealing their formation and self-healing processes.
Researchers developed a high-performance 2D pseudocapacitive multi-electron reaction lithium storage material, exhibiting high capacity and ultrafast charging capabilities. The material showed improved electronic and ionic conductivity, reducing polarization and increasing overall energy density.
Researchers at Dalian Institute of Chemical Physics have developed an air-breathing cathode for alkaline nickel-zinc batteries, improving cycling stability and energy efficiency. The novel battery exhibits ultra-long lifespan and high energy efficiency, surpassing conventional Ni-Zn batteries.
Researchers have developed an electrolyte to improve the efficiency of CO2 conversion into useful hydrocarbons. The study found that controlling the concentration of the electrolyte is crucial in regulating product formation, with too much potassium leading to clogage and reduced selectivity.
Researchers have developed a new design of cathode materials in Li-Cl2 batteries, achieving high specific capacities of up to 2000 mAh/g and stable performance for over 500 cycles. The use of NH2-functionalized MOFs enhances the redox reaction kinetics and improves low-temperature stability.
A new study reveals how ferroelectric coatings improve all-solid-state lithium batteries by reducing space charge layers and enhancing lithium transportation. The coatings made from guanidinium perchlorate increase battery capacities to near-liquid lithium-ion levels.
A new study proposes a simple coating solution to reduce degradation in solid-state lithium metal batteries. The coating, made of LiZr2(PO4)3 (LZP), improves capacity retention and decreases decay by mitigating uneven lithium-ion flux.
Texas A&M researchers have found a significant increase in energy storage capacity of water-based battery electrodes, paving the way for safer and more stable batteries. The discovery could provide an alternative to lithium-ion batteries, which are facing material shortages and price increases.
A team of researchers has proposed a new technical route for all-solid-state lithium-based batteries (ASSLBs), overcoming limitations with highly compressible and conductive cathode material. This breakthrough could lead to safer and more energy-dense batteries.
Researchers have developed a novel and cost-effective anode catalyst that can improve and stabilize power generation performance of MFCs treating vegetable oil industry wastewater. The study investigates modification of electrodes to increase bacterial adhesion and efficient electron transfer.
Researchers have developed a new lithium-air battery that uses a solid electrolyte, boosting energy density four times above lithium-ion batteries. The battery can potentially power cars for over a thousand miles on a single charge and is also suitable for domestic airplanes and long-haul trucks.
Researchers at Tokyo University of Science have found a promising cathode material for magnesium rechargeable batteries, achieving better cyclability and high battery capacity. The Mg1.33V1.67O4 system with substituted vanadium and manganese shows superior charge-discharge properties.
Researchers developed a new molten salt battery design using sodium and aluminum that can charge and discharge faster, operate at lower temperatures, and maintain excellent energy storage capacity. The battery's specific energy density could reach up to 100 Wh/kg, making it a promising solution for 10-plus hours of energy storage.
Researchers at Toyohashi University of Technology elucidated the decomposition behavior of electrolytes in cathode composites of all-solid-state lithium-sulfur batteries. The sulfide solid electrolytes convert to thiophosphates with long-chain cross-linked sulfur during charging and discharging cycles, governing battery performance.
A new research project aims to solve the physics behind excessive bubble formation in electrolysis, a bottleneck in large-scale green hydrogen production. The team will combine numerical simulations and laboratory experiments to develop reliable modelling tools.
Researchers at KAUST developed a high-efficiency metal-free battery using ammonium cations as charge carriers, outperforming existing analogues with a record operation voltage of 2.75 volts. This breakthrough provides potential for lowering battery costs and enabling large-scale applications.
A team from East China University of Science and Technology has developed a simple, one-step dual-modification strategy to restrain side reactions in nickel-rich layered cathodes. The resulting cathode material exhibits superior electrochemical performance with excellent long-term cycling stability.
Researchers at the University of Chicago's Pritzker School of Molecular Engineering have used a combination of electron microscopy and computational modeling to understand how lithium-ion batteries degrade. They found that variation between areas of the battery, particularly electrolyte corrosion, leads to faster degradation.
Researchers at ORNL developed a cleaner, more efficient method for making high-capacity cathode material without cobalt. The new hydrothermal synthesis approach reduces environmental impact and increases production speed.
Researchers from Japan Advanced Institute of Science and Technology have developed a sustainable, eco-friendly compound to stabilize high-energy density lithium-ion batteries. The microbially synthesized pyrazine diamine compound significantly improves battery performance, reducing degradation and increasing operating potential.
Researchers at HKUST designed an innovative iron-based cathode material to achieve record performance for protonic ceramic fuel cells. The new material, Ba0.875Fe0.875Zr0.125O3-δ, has exceptional electrochemical activity and excellent operational stability.
Researchers at MIT have developed a new approach to improve the energy density of nonrechargeable batteries, enabling up to a 50% increase in useful lifetime. The new design uses a fluorinated catholyte material that reduces dead weight and improves safety.
Researchers from South China University of Technology have developed novel surface modification techniques for nickel-rich layered oxide cathode materials, improving their electrochemical performance. The techniques allow for high-performance nickel-rich cathode materials to be synthesized, enabling in-depth mechanisms to be captured a...
Marc-Antoni Racing has licensed patented energy storage technologies from Oak Ridge National Laboratory for fast-charging batteries in electric vehicles. The technologies aim to break the barrier to fast-charging power-dense lithium-ion batteries, reducing vehicle charging time to under 15 minutes.
Researchers have discovered an innovative way to enhance the energy efficiency of metal-carbon dioxide batteries by introducing unconventional phase nanomaterials as catalysts. The novel design boosts battery energy efficiency up to 83.8%, contributing to carbon-neutral goals.
Researchers in China designed a strategy to improve zinc-air battery performance by combining two transition metals, atomic iron and nickel, which deliver high electrocatalytic activity. The resulting rechargeable batteries achieve high peak power density, working rates, and long lifespan.
UCI and national lab researchers have created a cobalt-free cathode for lithium-ion batteries that exhibits unprecedented volumetric change, stability over repeated cycles, and high temperatures. The innovative material could lead to safer, longer-lasting power storage for electric vehicles and devices.
Researchers at KAUST developed conductive membranes that stimulate microbial growth and separate biochemical products, reducing the CO2 conversion time from over 30 days to just one month. The membranes use nickel nanoparticles to catalyze hydrogen production, enhancing efficiency and stability in microbial electrosynthesis systems.
Researchers have designed superfast charging methods tailored to power different types of electric vehicle batteries in 10 minutes or less without harm. By incorporating charging data into machine learning analysis, the team identified and optimized new protocols that significantly increase energy storage while minimizing battery damage.
A joint research team proposes a dual-plating strategy to rapidly construct new zinc-bromine microbatteries with ultrahigh areal energy density and polarity-switchable functionality. The method eliminates the synthesis of active materials and avoids mass matching, resulting in record-high areal capacity and energy density.
Researchers at PNNL have developed a sodium-ion battery with greatly extended longevity in laboratory tests. The new electrolyte recipe stabilizes the protective film on the anode and generates an ultra-thin protective layer, providing long cycle life and stability. This technology has potential for applications in light-duty electric ...
Researchers at the Indian Institute of Science discovered that microscopic voids in lithium anodes cause dendrite formation in solid-state batteries. By adding a thin layer of refractory metals to the electrolyte surface, they delayed dendrite growth and extended battery life.
Researchers discovered an electrolyte additive that protects nickel-rich layered cathodes from degradation and improves cycling performance. The additive forms a protective layer on the cathode, reducing transition metal loss and increasing energy density.
Scientists have developed a machine learning algorithm that can accurately predict the lifetimes of different battery chemistries using as little as a single cycle of experimental data. The technique could reduce costs and accelerate the development of new battery materials, enabling researchers to quickly evaluate and test multiple ma...