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14Jun/170

Lithium Battery Storage – If Evaluating Lithium Battery Storage, Maybe Look at This Guide.

A team of engineers led by 94-year-old John Goodenough, professor from the Cockrell School of Engineering on the University of Texas at Austin and co-inventor from the custom lithium battery, has developed the initial all-solid-state battery cells that can lead to safer, faster-charging, longer-lasting rechargeable batteries for handheld smart 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 that may be noncombustible and has a lengthy cycle life (battery lifespan) by using a high volumetric energy density and fast rates of charge and discharge. The engineers describe their new technology within a recent paper published in the journal Energy & Environmental Science.

“Cost, safety, energy density, rates of charge and discharge and cycle life are critical for battery-driven cars to become more widely adopted. We feel our discovery solves a lot of the issues that are inherent in today’s batteries,” Goodenough said.

They demonstrated their new battery cells have at least 3 times just as much energy density as today’s lithium-ion batteries. Battery power cell’s energy density gives a power vehicle its driving range, so a better energy density signifies that an automobile can drive more miles between charges. The UT Austin battery formulation also permits an increased variety 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 transport the lithium ions in between the anode (the negative side from the battery) along with the cathode (the positive side in the battery). If energy storage companies is charged too rapidly, there may be dendrites or “metal whiskers” to make and cross with the liquid electrolytes, creating a short circuit that can bring about explosions and fires. As an alternative to liquid electrolytes, the researchers depend upon glass electrolytes that enable the usage of an alkali-metal anode minus the formation of dendrites.

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

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

Braga began developing solid-glass electrolytes with colleagues while she was at the University of Porto in Portugal. About 2 yrs ago, she began collaborating with Goodenough and researcher Andrew J. Murchison at UT Austin. Braga said that Goodenough brought an awareness from the composition and properties in the solid-glass electrolytes that led to a new version from the electrolytes that is now patented from the UT Austin Office of Technology Commercialization.

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

An additional benefit is the battery cells can be created from earth-friendly materials.

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

Goodenough and Braga are continuing to succeed their 18650 battery pack and therefore are concentrating on several patents. For the short term, they hope to work alongside battery makers to produce and test their new materials in electric vehicles and energy storage devices.

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