Search

Showing results for “Batteries”

Jump to a topic

BatteriesBatteries are devices that provide electrical energy stored in the form of chemical energy. The first electrochemical cell was invented in 1799 by Alessandro Volta, who generated electricity after stacking plates of copper and zinc separated by saltwater-soaked cloth. In his honor, electrical potential is measured in volts, the units seen on the billions of batteries sold each year for consumer electronics, electric vehicles, renewable energy systems, and more. Every battery consists of three components: an anode, a cathode, and an electrolyte barrier separating them. When the cathode and anode are connected in a circuit, chemical reactions produce energetic electrons that flow from the anode (negative end of the battery) to the cathode (positive end). This flow is the electricity that powers devices connected to the circuit. To offset the buildup of charge from the displaced electrons, ions produced in the reactions move between the anode and cathode through the electrolyte. The electrical current continues until there is insufficient material left in the anode to undergo a chemical reaction. If a battery is rechargeable, an external voltage can reverse the flows and restore the chemical reservoirs. Despite battery management software in many devices, several factors reduce battery capacity with each charge cycle. All batteries eventually deplete too quickly and must be replaced, but the diversity of elements they incorporate and their nonuniform designs have made their widespread recycling challenging.Explore Batteries

Critical Minerals Viking Project Electric Vehicles Coffee Happy Hour Sports Betting Exercise

What we've found

View the five most expensive metals used to make batteriesBefore 2021, when lithium carbonate became the most expensive metal for use in electric vehicle cathodes, cobalt was the most costly battery metal. Of the top five, copper is the only metal not used in cathodes, arguably the most important part of the battery, which determines performance, longevity, and range. Visual Capitalist The widespread need for rechargeable batteries has fueled surging lithium demandAs of 2025, the average person uses 27 times more mined lithium than they did in the 1990s, with the US ranking second globally in consumption despite producing less than 1% of global supply. However, potential alternative materials and boom-and-bust cycles have challenged the profitability of mines and future demand for the mineral. Vox Batteries, baby wipes, and other Costco buys that might not be worth itCostco's private label Kirkland sells just about everything at a price many customers say can't be beat. While often a cost-efficient way to buy household goods in bulk, some shoppers not all Kirkland products are created equal and there are some items that aren't worth the cost savings. GOBankingRates The abundance of raw materials may lead to sodium replacing lithium in batteriesLower risks of thermal runaway, which can lead to fires and explosions, and less energy capacity loss at low temperatures support the shift. However, sodium's greater weight and lower energy density compared to lithium have made it best suited for stationary storage applications. (Some readers may experience a paywall.) C&EN Nuclear batteries generate electrical currents using radioactive materialsRather than using electrochemical reactions to produce the electrons that flow through a circuit, isotopes like nickel-63 undergo beta decay—emitting electrons—which a semiconducting material can absorb to establish a charge imbalance that generates current. Such batteries could provide low-power energy for decades. IEEE Spectrum Sand 'batteries' can store excess electricity from the power grid as thermal energyEnergy collected from solar or wind power is used to heat insulated silos full of sand to temperatures as high as 450 degrees Celsius (842 degrees Fahrenheit), which can be retained for long periods. These thermal energy storage systems can be designed to boil water and generate electricity when needed. Polar Night Energy Solid-state batteries substitute the fluid electrolyte layer with a solidThe non-flammable solid greatly reduces the risk of fire and explosion, as well as the release of toxic gases via leaks in the existing sulfide-based systems. These batteries use garnet-type solid electrolytes, which provide high ionic conductivity and chemical stability but require temperatures above 1,000 degrees Celsius (1,800 degrees Fahrenheit) for fabrication. Interesting Engineering Accidental ingestion of batteries can be life-threateningTissue in the body can serve as a circuit path between the anode and cathode of a battery, resulting in electrical burns and gradual tissue erosion. Stomach acid can corrode a battery and cause its toxic contents to leak, making a person sick. Batteries for internal use, such as in pacemakers, require special designs. The Conversation During manufacturing, lithium-ion and alkaline batteries are tested for short-circuitingLithium-ion batteries are made by manufacturing anodes, cathodes, and electrolytes via chemical processes, assembling these components into cells, and enclosing multiple interconnected cells within a protective casing. Disposable alkaline battery production involves filling steel containers with preforms—rings of powdered cathode material—paper-based separators, electrolyte solution, and an anode gel. Discovery UK Legacy electronics have prevented significant advancements in alkaline batteriesWhile lithium-ion batteries have increased in energy density multiple times since their commercialization in 1991 and can be sized to various capacities by connecting numerous electrochemical cells, disposable alkaline batteries have been forced to maintain their 1.5-volt standard and form factors for compatibility with existing devices. Hank Green Thermal runaway reactions can cause batteries to catch fire or explodeIf a lithium-ion battery is heated, punctured, crushed, or short-circuits due to manufacturing flaws or degradation, the cathode and anode can make contact without the resistance provided by a circuit. The ensuing spike in chemical reactions increases the temperature and can release oxygen, initiating and intensifying burning of the battery's interior. Batteries are likely to stop working sooner in cold temperaturesThe electrolyte separating the cathode and anode of a battery can thicken, impeding ion flow. Lower temperatures also slow the rate of chemical reactions, further reducing battery capacity. Large draws of power, such as when using heaters, heated seats, etc., in a car during winter, exacerbate battery drain further. ThoughtCo Benjamin Franklin described a series of static electricity storage jars as 'batteries'Discovered over 50 years before the first electrochemical cell was invented, Leyden jars stored electric charge between the metals inside and outside a liquid-filled container. Franklin was the first to use the term "battery" in an electrical sense, though his multiple-jar device—lacking chemical reactions—was actually a series of capacitors. Science History Institute Explore options for recycling batteriesImproper battery disposal can lead to fires and the leaching of harmful chemicals and toxic materials into local soil and water systems. Although many batteries contain metals that can be recycled with less energy than it takes to produce them, variability in regulations across municipalities and states can complicate efforts. (Some readers may experience a paywall.) The New York Times Batteries range in size based on their purpose, cost, and manufacturabilityLead-acid batteries used in combustion vehicles are resilient to temperature extremes, low-cost, and provide high surge current, which is needed for initial ignition. Alkaline batteries, including AA, AAA, and B, have long shelf lives and supply the low, steady power required for electronics with minimal demand fluctuations. The Conversation Sony's existing videotape production led to cylinder-shaped batteriesAfter a prototype cell was presented to executives in 1987, Sony repurposed its roll-to-roll manufacturing equipment for film to make lithium-ion batteries from rolled sheets of metal and electrolytes. The company popularized the term "lithium-ion" when including it in its Handycam advertising in 1991. IEEE Spectrum Batteries store energy in chemical bonds that can be turned into electricityTo achieve a more stable, nonreactive state, many elements in nature are reactive and will seek to lose electrons via oxidation or gain electrons through reduction reactions. By pairing an oxidizing chemical with a reducing chemical in a battery, electrons will naturally flow between them, producing an electric current. Engineering Mindset More batteries in the power grid would create an on-demand energy reservoirMost power grids are inefficient because they require enough generation capacity at all times to avoid blackouts. This means at any given time, as much as 50% of generating capacity at power plants can go unused. Batteries would reduce this inefficiency and allow for real-time adjustments. Works in Progress Gradual chemical build-up reduces the effectiveness of rechargeable batteriesDuring charge cycles, small chemical deposits gradually form a film on the electrodes where they make contact with the electrolyte, trapping ions that would otherwise facilitate the flow of electricity. Mechanical degradation from electrode wear and electrical shorting from structural instability can also reduce battery capacity. BatteryGuy Dragon seismometers, Baghdad batteries, and more ancient artifactsThe ancients were behind us in many ways, but some inventions from the time have not been surpassed in the modern era in effectiveness, beauty, or cleverness. This quick list of bizarre ancient inventions includes a battery from Baghdad, a Molotov cocktail-like explosive in Greece, and more. TheCollector Lithium-ion batteries are the standard for rechargeable devicesThe costly setup of new mining operations and challenges with recycling amid growing demand have led researchers to search for alternatives, including sodium-ion, solid-state, and lithium-sulphur batteries, despite challenges with scalability. BBC As of 2022, only about 5% of lithium-ion batteries are recycled globallyTraditional recycling methods have been inadequate for lithium batteries, prompting manufacturers to explore more sustainable battery designs, alongside robotic disassembly and ultrasonic techniques to improve recycling rates. Studies have shown that mining for new lithium requires significantly more water and energy than recycling and results in declining vegetation near mines. BBC From 1991 to 2024, lithium-ion battery cell prices have fallen by 99%The decrease from about $10,000 to $50 per kilowatt-hour has been driven by innovations in battery chemistry, improvements in manufacturing and supply chains, and increases in global cumulative production, which have caused average price declines of 19% each time it has doubled. Our World in Data Contactless credit cards descend from a batteryless Cold War listening deviceThe same physics that let Soviet spies eavesdrop on the US ambassador in 1945 underlie contactless payment methods today. The device is a passive chip powered wirelessly by incoming radio waves. Veritasium How to safely dispose of every kind of battery As lithium-ion batteries have proliferated in phones, e-bikes, power tools, and dozens of other devices, improper disposal has become a leading cause of fires in recycling facilities and garbage trucks. Battery Safety Now partnered with the US Forest Service's Woodsy Owl campaign to provide guidance on how to recycle batteries by type, including locator tools for drop-off sites. Battery Safety Now The worst things to buy at the dollar store, according to a financial expertSome dollar store products can be low quality, and experts advise not purchasing them. This list includes 17 products to avoid at dollar stores, including batteries, toys, costumes, and more. Kiplinger Gold's electrical conductivity, reflectivity, and catalytic capabilities make it scientifically valuableAlthough gold has been prized since its use in 40,000 BCE for decorative purposes, it has more recently served as a replacement for mercury in the production of PVC plastic. Because gold does not react with air or corrode, it has remained in circulation and reused in electronics and biomaterials. Curious Cases Explore tips from the American Red Cross on preparing for a tornadoIf you live in a region prone to tornadoes, have a plan to retreat to a safe room built to withstand strong winds, such as an underground shelter or a windowless room at the lowest level of a study building, in case of a tornado warning. Having a stay-at-home kit with non-perishable food and water, medications, batteries and chargers, and a battery-powered radio is also essential. American Red Cross Geothermal power plants can provide large-scale energy storage for other systemsThese facilities can store excess energy from solar and wind power as hot water or steam, which can be used to run turbines to generate electricity when other renewable energy sources are unavailable. Simulations have found efficiencies of 90% during a storage-use cycle, making it comparable to lithium-ion batteries. IEEE Spectrum Pollution from lead battery recycling has led to widespread contaminationMany small-scale operations worldwide remain unregulated, bypassing environmental regulations and causing increasing health threats, primarily to children. A 2020 report by UNICEF found that one-third of the world's children are being poisoned by lead from recycled batteries, among other sources. Yale e360 Watch how metals are extracted from rechargeable devices during recyclingRecyclable batteries found in cars, phones, power tools, and other electronics contain lithium, cobalt, nickel, and other precious metals, whose reuse generates 70% fewer emissions than during their initial mining. Upon shredding these devices, a filter press squeezes the pieces through a proprietary fluid, which separates them for future reuse. JerryRigEverything Genetically modified viruses can help construct battery electrodesMIT scientists' modifications caused the viruses to attract conductive materials, such as gold ions, which the viruses self-assembled into nanowires that could be used in batteries. These components allow batteries to be thinner and flexible enough to be constructed into new shapes. NBC News Lithium can store and deliver substantial energy for its cost and weightWhen exploring which compounds would be best suited for batteries, scientists sought elements that were relatively inexpensive to mine, readily available, and that provided high energy density—how much chemical energy an element could store for its size. Lithium-ion batteries provide these benefits and discharge at very low rates when unused. MIT Climate Portal Spontaneous combustion involves an object igniting on its ownEven without matches, sparks, or external flames, exothermic chemical or biological reactions can increase the internal temperature of objects to the point where they reach a threshold temperature that can cause them to catch fire. Running batteries and fermenting bacteria within compressed materials can build this heat and cause combustion. Curious Cases Between 1993 and 2009, the Hubble was serviced for repairs and upgrades five timesAcross 21 spacewalks totaling 144 hours, replacement instruments, gyroscopes, solar arrays, batteries, and computer systems have helped extend the Hubble Space Telescope's operational lifetime beyond its planned 15 years. NASA Supercollider particles lag behind light by just 10 feet after 14 minutes of travelThe circular shape of the Large Hadron Collider allows particles to be repeatedly accelerated and redirected via electromagnetic fields rather than building equivalent energy in a linear chamber hundreds of miles long. The latter would require 5 trillion D batteries to achieve equivalent near-light speeds. TED-Ed Rune Elmqvist forwent practicing medicine to invent the first inkjet printerThe Mingograph recorded real-time physiological signals from a patient's electrocardiogram, helping doctors diagnose heart and brain conditions. Eight years later, in 1958, Elmqvist worked with cardiac surgeon Åke Senning to develop the first fully implantable pacemaker. IEEE Spectrum An eephus pitch catches batters by surprise The specialty pitch—rarely used by starters—is unexpectedly slow and thrown with an abnormally high arc, often catching batters off-guard. Below is one famous example from 1981: Yankees pitcher Dave LaRoche striking out the Brewers' Gorman Thomas with an eephus that fans called the "La Lob." MLB How power plants deal with extreme surges in demandDuring big power surges—like on hot summer days—power plants have to adjust their power generation to keep up with the demand. Plants run by coal, oil, or renewables like wind and solar take time to make such adjustments, making a reduction in power across the grid more likely. Natural gas, on the other hand, can be tuned more quickly. Popular Science Google chose Santa Barbara to host its Quantum AI computing projectThe project seeks to reduce errors within its quantum computer and integrate 1 million physical qubits (or quantum bits) into the room-sized computer. This powerful device will attempt to solve complex problems in medicine, computing, and more. Google Chile, Argentina, and Bolivia hold more than 75% of the world’s supply of lithiumDespite the dependence of phones, laptops, electric cars, and other technologies on the soft, silvery-white metal for their batteries, residents of the Lithium Triangle have not seen the benefits of investments into mining this critical mineral, and have instead faced water shortages and pollution. Harvard International Review A pair of engineers began Tesla to prove the viability of electric vehiclesMartin Eberhard and Marc Tarpenning sought to design a high-end electric sports car for environmentally motivated, affluent buyers. The Tesla Roadster would be the first highway-legal car to use lithium-ion batteries. 1440 Daily Digest Take a drone tour of a Tesla factoryThe first of Tesla's large-scale European manufacturing plants for its electric vehicles was opened in Berlin in 2022. It—along with other facilities in Nevada, New York, Texas, and Shanghai—collectively manufactures solar panels, batteries, and other energy collection and storage products. Tesla California startup Rivian has attracted disillusioned Tesla ownersSome electric vehicle buyers frustrated by Elon Musk's antics have been won over by the adventure-focused company, which has received a $5B investment from the Volkswagen Group to develop crossover and hatchback models with solid-state batteries. InsideEVs BYD Auto is the largest EV maker in China, overtaking TeslaAs of 2023, the company has 40% of the electric vehicle market in China and produces more than 3 million EVs for customers worldwide. Its vertical integration, which includes building its own batteries and cargo ships, has allowed BYD to lower retail costs. CNBC Electric vehicles have been around since the 19th centuryThe first EVs ran on rechargeable lead-acid batteries, which could travel 60 to 80 miles on a single charge. Women preferred these vehicles, which were quieter, less smelly, and did not require turning a hand crank to start the engine. 1440 Charging an EV depends on power source, charger type and battery sizeIt takes less time to charge an electric vehicle's battery for Level 3 chargers, which can deliver 80% capacity in as little as 30 minutes. Level 1 chargers can take days. Larger vehicles possess larger batteries that increase charging time, despite often having less range. Car and Driver Growing EV adoption requires battery management infrastructureDespite rechargeable batteries' limited life cycle, companies like Spiers New Technologies have developed methods to repair, refurbish, repurpose and recycle these components to minimize environmental waste, lower demand for new critical minerals, and increase electric vehicle lifetimes. CNBC The research that led to sourScientists are trying to figure out if there are unique receptors that respond to the molecules that make up flavors we associate with calcium, blood, batteries, and other items that often escape dinner menus. Taste researcher Dr. Danielle Reed says the minimum evidence for a taste category typically involves identifying dedicated receptors and then removing them to show the taste vanishes. Short Wave Explore the human and environmental resources needed to make an electric vehicleThe minerals needed to build batteries for electric vehicles are expensive and often take a human toll paid by the communities where they are mined. This interactive article details what minerals make up an electric vehicle battery, where they come from, and dangers posed by the mining process. The Washington Post

Try another search?

Nuclear Power Tesla