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Categories: Chemistry: Thermodynamics, Energy: Batteries
Published Converting temperature fluctuations into clean energy with novel nanoparticles and heating strategy
(via sciencedaily.com) Pyroelectric catalysis (pyro-catalysis) can convert environmental temperature fluctuations into clean chemical energy, like hydrogen. However, compared with the more common catalysis strategy, such as photocatalysis, pyro-catalysis is inefficient due to slow temperature changes in the ambient environment. Recently, a team has triggered a significantly faster and more efficient pyro-catalytic reaction using localized plasmonic heat sources to rapidly and efficiently heat up the pyro-catalytic material and allow it to cool down. The findings open up new avenues for efficient catalysis for biological applications, pollutant treatment and clean energy production.
Published New battery could prevent post-hurricane electric vehicle fires
(via sciencedaily.com) A researcher has developed technology that could prevent electric vehicle fires, like those caused by saltwater flooding from Hurricane Ian. The technology, an aqueous battery, replaces the volatile and highly flammable organic solvents found in electric vehicle lithium-ion batteries with saltwater to create a battery that is safer, faster charging, just as powerful and won't short circuit during flooding.
Published Lithium-sulfur batteries are one step closer to powering the future
(via sciencedaily.com) A research team has built and tested a new interlayer to prevent dissolution of the sulfur cathode in lithium-sulfur batteries. This new interlayer increases Li-S cell capacity and maintains it over hundreds of cycles.
Published Efficient sodium-ion battery anode for energy storage
(via sciencedaily.com) Lithium is expensive and limited, necessitating the development of efficient energy storage systems beyond lithium-ion batteries. Sodium is a promising candidate. However, sodium ions, being large and sluggish, hamper sodium-ion battery (SIB) anode performance. Researchers have recently developed pyrolyzed quinacridones, new carbonaceous SIB anode materials, that are efficient, easily prepared, and exhibit excellent electrochemical properties, including high sodium-ion storage performance and cycling stability.
Published Enabling nanoscale thermoelectrics with a novel organometallic molecular junction
(via sciencedaily.com) Multinuclear organometallic junctions might be the key to realizing high-performance thermoelectric devices at the nanoscale. The unique electronic structure of organometallic ruthenium alkynyl complexes allowed the researchers to achieve unprecedented heat-to-electricity conversion performance in molecular junctions, paving the way to molecular-scale temperature sensors and thermal energy harvesters.
Published Cheap, sustainable hydrogen through solar power
(via sciencedaily.com) A new kind of solar panel has achieved 9% efficiency in converting water into hydrogen and oxygen--mimicking a crucial step in natural photosynthesis. Outdoors, it represents a major leap in the technology, nearly 10 times more efficient than solar water-splitting experiments of its kind.
Published Scientists develop a cool new method of refrigeration
(via sciencedaily.com) Researchers have developed a new kind of heating and cooling method that they have named the ionocaloric refrigeration cycle. They hope the technique will someday help phase out refrigerants that contribute to global warming and provide safe, efficient cooling and heating for homes.
Published Development of next-generation solid electrolyte technology, 'stable' even when exposed to the atmosphere
(via sciencedaily.com) Engineers have announced the development of solid electrolytes with enhanced atmospheric stability.
Published Designing better battery electrolytes
(via sciencedaily.com) Scientists give the lay of the land in the quest for electrolytes that could enable revolutionary battery chemistries.
Published A shield for 2D materials that adds vibrations to reduce vibration problems
(via sciencedaily.com) A new study demonstrates a new, counterintuitive way to protect atomically-thin electronics -- adding vibrations, to reduce vibrations. By squeezing a liquid-metal gallium droplet, graphene devices are painted with a protective coating of gallium-oxide that can cover millimeter-wide scales, making it potentially applicable for industrial large-scale fabrication. The new technique improves device performance as well as protecting 2D materials from thermal vibration in neighboring materials.
Published Mitigating corrosion by liquid tin could lead to better cooling in fusion reactors
(via sciencedaily.com) Researchers have clarified the chemical compatibility between high temperature liquid metal tin (Sn) and reduced activation ferritic martensitic, a candidate structural material for fusion reactors. This discovery has paved the way for the development of a liquid metal tin divertor, which is an advanced heat-removal component of fusion reactors. A device called a divertor is installed in the fusion reactors to maintain the purity of the plasma. For divertors, there has been demand for liquid metals that can withstand extremely large heat loads from high-temperature plasma.
Published Chaos gives the quantum world a temperature
(via sciencedaily.com) Two seemingly different areas of physics are related in subtle ways: Quantum theory and thermodynamics. How can the laws of thermodynamics arise from the laws of quantum physics? This question has now been pursued with computer simulations, which showed that chaos plays a crucial role: Only where chaos prevails do the well-known rules of thermodynamics follow from quantum physics.
Published Gold-based passive heating for eyewear
(via sciencedaily.com) Researchers have developed a new transparent gold nanocoating that harnesses sunlight to heat the lenses of glasses, thereby preventing them from fogging in humid conditions. This coating could potentially also be applied to car windshields.
Published Ingestible biobatteries could allow new view of digestive system
(via sciencedaily.com) A new biobattery could power ingestible cameras in the small intestine.
Published New life flashed into lithium-ion anodes
(via sciencedaily.com) Chemists use flash Joule heating to recover graphite anodes from spent lithium-ion batteries at a cost of about $118 per ton.
Published Flameproofing lithium-ion batteries with salt
(via sciencedaily.com) A polymer-based electrolyte makes for batteries that keep working -- and don't catch fire -- when heated to over 140 degrees F.
Published New battery technology has potential to significantly reduce energy storage costs
(via sciencedaily.com) Researchers are hoping that a new, low-cost battery which holds four times the energy capacity of lithium-ion batteries and is far cheaper to produce will significantly reduce the cost of transitioning to a decarbonized economy.
Published X-rays reveal elusive chemistry for better EV batteries
(via sciencedaily.com) Scientists used high energy x-rays to investigate the solid-electrolyte interphase, a chemical layer in batteries that's key to stabilizing lithium metal anodes. Chemists unraveled this complex chemical mechanisms that is crucial for boosting energy density.
Published New manufacturing process produces better, cheaper cathodes for lithium-ion batteries
(via sciencedaily.com) Researchers have developed a new method for producing a key component of lithium-ion batteries. The result is a more affordable battery from a faster, less wasteful process that uses less toxic material.
Published A self-powered ingestible sensor opens new avenues for gut research
(via sciencedaily.com) Engineering researchers have developed a battery-free, pill-shaped ingestible biosensing system designed to provide continuous monitoring in the intestinal environment. It gives scientists the ability to monitor gut metabolites in real time, which wasn't possible before. This could unlock a new understanding of intestinal metabolite composition, which significantly impacts human health overall.