Five battery innovations could change our lives forever.
Today's electrically-driven culture uses many batteries.
Your phone probably has a battery. Charging? Imagine not charging your phone
for a month. Imagine a 1000-mile-per-hour electric car that lasts 1 million
miles. Lithium-ion batteries power all electric autos. They're good, but slow
and heavy. Decomposed animals have 100 times as much energy as car batteries.
Compared to gasoline, a lithium-ion battery has 0.3 megajoules. Charging
affects lithium battery capacity. Musk says researchers test batteries to 80
percent capacity. Tesla Model 3 drive unit lasts 1 million miles, whereas
battery lasts 300,000 to 500,000 miles or 1500 charge cycles. Density and
vitality are crucial.
Current lithium-ion batteries have environmental and
geopolitical challenges. Current technology uses DRC-sourced cobalt. World's
largest producer uses rebel child labor. Legal exports fuel regional violence.
Camps deforest and violate rights. in approaching decades. We need cheap,
durable, reliable batteries. In an electric future, batteries must be
politically and environmentally viable.
Tesla's battery day was 22nd. Palo Alto carmaker introduces
the 4680 battery cell with improved energy density, simplicity, and cost. The
king-size cells lack energy-transfer tabs. Tesla laser-powdered foils to
connect active materials. It reduces heat and promotes productivity. Tesla
improved silicon battery chemistry by stabilizing the surface with an
ion-conducting polymer. This allows cheaper commodified silicon for cell
production. These upgrades should cut Tesla's kWh cost by 56% and 5X energy
storage. Tesla plans to produce 3 terawatt hours per year by 2030 and switch to
long-distance electric vehicles. Tesla's battery day has increased interest in
batteries. Five revolutionary battery technologies.
Air-metal batteries. Automotive and aerospace could benefit
from aluminum and lithium-air chemistry. Promised: light, high-energy
batteries. Lithium air batteries are 10 times more powerful. It's imperfect.
Higher than lithium-ion. Electrodes clog after 10 cycles. Scientists transport
liquid electrolytes in porous carbon. In autos, pure oxygen is dangerous.
Researchers suggest molybdenum disulfide nanoflakes minimize electrode fouling
by accelerating lithium peroxide generation. 700 vs. 11 No car.
Metal-air batteries. Aluminum and lithium-air chemistry
enhance automotive and aerospace. Light, high-energy batteries promised. More
powerful lithium air batteries. Flawed. Lithium-ion-level. 10 cycles clog
electrodes. Porous carbon transports electrolytes. Oxygen is dangerous in cars.
Molybdenum disulfide nanoflakes reduce electrode fouling by boosting lithium
peroxide production, say researchers. vs. 700 Carless.
Nanotechnology is used in nanoelectronics, body armor, and
slip-resistant irons. 1 to 100 nanometers wide. Small-scale physics and the
universe. Electrodes swell when charged. Antimony nanochain electrodes replaced
carbon or graphite last year. Expanding electrode holes. A 100-cycle battery
charges quickly. Passed nanocarbon. Graphene. Samsung creates graphene-balls.
Improved charger and heat management. Graphene boosts battery energy density by
30%. Amprius' nanowire anodes. Electric planes need 500 Wh/kg. Roll-roll vapor
deposition attaches silicon nanowires to foil to cut costs. These finger-like extensions
are micro and macro porous, allowing them to grow without expanding the whole
electrode, like spring leaves but not the forest.
Investigators suspect Tesla bought Ambryas because it moved
close. UC Irvine created 200,000-cycle electrodes with gold nanowires,
manganese dioxide, and polymer gel electrolyte. Nanotechnology could be
mass-produced for silicon batteries. High-power lithium sulfur batteries. 2567
Wh/kg is theorized. The Wh/kg beats lithium-350. Lithium-sulfur battery
thinner. Alise makes a 500-watt-hour-per-kilogram lithium sulfur battery. It's
cheaper than cobalt and manganese and extracted from fossil fuels or nature.
Electrolyte, anode, and cathode are liquid in lithium-ion batteries. Sulfur
batteries' cathode contains lithium. Technology commercialization is difficult.
Sulfur prevents electricity. Graphite and carbon have sulfur atoms.
"Shutting" depletes batteries and corrodes lithium anodes, reducing
capacity. Electrodes swell from lithium ions. Helpful lithium sulfur.
Sulfur cathodes expand eight times more than lithium-ion
cathodes. Cycled batteries deteriorate polymer or carbon-based supports and
binders, lowering capacity and performance. Thin cathodes with polymers. On
lithium-based batteries, thin metal fingers can develop, causing a short
circuit and rapid depletion. This is the same thermal runaway defect that has
caused lithium-ion battery fires in the past, thus study can be carried over to
lithium-sulfur technology, using graphene and other nanostructures as
scaffolding for the deposition of lithium solid state electrolytes. Existing
lithium-sulfur batteries. Zephyr was powered by a 350 Wh/kg Scion Energy
battery in 2014. Monash University hopes to market a 621-mile electric car
battery by 2020.
Solid-state electrolytes are desired. Solids or polymers
would replace flammable organic liquids. Solid electrolytes may enhance lithium
electrode output voltage and energy density. Physically limiting lithium and
other electrode materials' dendritic growth promotes battery crash safety and
resistance to overheating and short circuiting. Volkswagen, Toyota, BMW, and
Hyundai have all invested in solid-state batteries. VW gave Quantum scape $300
million.
Quantum, a Stanford spin-off, publishes no product
specifications on its website, only job openings, signifying firm expansion and
product confidence. They like thin sintered ceramic and lithium-impregnated
garnet. Solid-state electrolytes inhibit electrode growth. Dendrites can't
permeate solid electrolytes. Quantum scape's patent modifies physical
properties. Panasonic investigates solid-state electrolytes. Toyota, Panasonic
develop solid-state batteries. 2 solid-state battery companies said in May 2020
their technology may give electric automobiles a 500-mile range and 1,000
charging cycles. This advantages your phone and laptop. Car and pocket
solid-state electrolytes.
Lithium-ion batteries charge faster and are more powerful.
The cool battery doesn't need cooling. After 8,000 cycles, the battery
deteriorated 10%. For mass-market aerospace and automotive clients, they
propose to use carbonized cotton fiber batteries. Commercial leasing. Picking
five battery projects is difficult. Batteries use lithium. Battery technology
in cars, laptops, cameras, and phones has limits. Better solar batteries.
Tesla's Powerpack and Powerwall are popular. Consumers, IT businesses, and
industry want safer, lighter batteries.
These battery advances are electric. Future energy will be
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battery-powered autos. Bikes, scooters, boats, and planes? Smartphones, PCs,
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