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15Jun/17Off

18650 Battery Pack – If Contemplating 18650 Battery Packs, You Should Check This Short Article.

A team of engineers led by 94-year-old John Goodenough, professor inside the Cockrell School of Engineering in the University of Texas at Austin and co-inventor of the 18650 lithium battery, has developed the very first all-solid-state battery cells that can lead to safer, faster-charging, longer-lasting rechargeable batteries for handheld mobile phones, electric cars and stationary energy storage.

Goodenough’s latest breakthrough, completed with Cockrell School senior research fellow Maria Helena Braga, can be a low-cost all-solid-state battery which is noncombustible and possesses a lengthy cycle life (battery life) using a high volumetric energy density and fast rates of charge and discharge. The engineers describe their new technology in the recent paper published within the journal Energy & Environmental Science.

“Cost, safety, energy density, rates of charge and discharge and cycle life are critical for battery-driven cars being more widely adopted. We believe our discovery solves most of the problems that are built into today’s batteries,” Goodenough said.

The researchers demonstrated their new battery cells have at least three times the maximum amount of energy density as today’s lithium-ion batteries. A battery cell’s energy density gives a power vehicle its driving range, so a higher energy density ensures that a car can drive more miles between charges. The UT Austin battery formulation also provides for a larger quantity of charging and discharging cycles, which equates to longer-lasting batteries, together with a faster rate of recharge (minutes as opposed to hours).

Today’s lithium-ion batteries use liquid electrolytes to move the lithium ions involving the anode (the negative side in the battery) and the cathode (the positive side from the battery). If lithium battery storage is charged too quickly, it can cause dendrites or “metal whiskers” to produce and cross throughout the liquid electrolytes, creating a short circuit that can lead to explosions and fires. As an alternative to liquid electrolytes, they count on glass electrolytes that enable the application of an alkali-metal anode without having the formation of dendrites.

Using an alkali-metal anode (lithium, sodium or potassium) - which isn’t possible with conventional batteries - improves the energy density of your cathode and delivers a long cycle life. In experiments, the researchers’ cells have demonstrated more than 1,200 cycles with low cell resistance.

Additionally, for the reason that solid-glass electrolytes can operate, or have high conductivity, at -20 degrees Celsius, this kind of battery in the vehicle could work well in subzero degree weather. This dexkpky82 the 1st all-solid-state battery cell that can operate under 60 degree Celsius.

Braga began developing solid-glass electrolytes with colleagues while she was in the University of Porto in Portugal. About 2 years ago, she began collaborating with Goodenough and researcher Andrew J. Murchison at UT Austin. Braga mentioned that Goodenough brought a preliminary understanding from the composition and properties from the solid-glass electrolytes that resulted in a whole new version from the electrolytes which is now patented from the UT Austin Office of Technology Commercialization.

The engineers’ glass electrolytes permit them to plate and strip alkali metals on the cathode and also the anode side without dendrites, which simplifies battery cell fabrication.

An additional advantage is the battery cells can be made from earth-friendly materials.

“The glass electrolytes enable the substitution of low-cost sodium for lithium. Sodium is taken from seawater that is widely available,” Braga said.

Goodenough and Braga are continuing to succeed their 18500 battery and so are focusing on several patents. For the short term, they hope to do business with battery makers to produce and test their new materials in electric vehicles as well as storage devices.

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