A Better Battery? A Survey of What Might Come after Lithium-Ion

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A Better Battery? A Survey of What Might Come after Lithium-Ion

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A Better Battery? A Survey of What Might Come after Lithium-Ion

coming from the February 2017 issue

How we store energy will be critical to the future of the electric car. While lithium-ion batteries are likely to remain the standard for at least the next decade, academic researchers as well as startup companies are racing to discover, design, as well as manufacture alternatives of which will move beyond the limits of today’s chemistries. The following three technologies show the greatest potential:

Reduction-Oxidation Flow

Reduction-Oxidation Flow

In brief: Here, energy is usually stored in tanks as two liquid electrolytes rather than within the positive as well as negative electrodes. The electrolytes generate electricity as they’re pumped through the battery cells. Recharging can occur either onboard by reversing the process or by replacing the electrolyte at a fuel station.

What might stop of which: Many experts believe of which achieving adequate range using a flow battery will require storage tanks too large to be practical in a vehicle.

Where of which stands: NanoFlowcell, a company based in Liechtenstein, claims of which of which carries a working flow-cell prototype vehicle of which drove for 14 hours at city speeds with two 42-gallon tanks of electrolytes, although skepticism runs high within the scientific community. A startup founded by MIT researchers, 24M recently pivoted coming from reduction-oxidation flow batteries to what of which calls semisolid lithium-ion batteries, specifically due to the packaging constraints of the large storage tanks.’

Solid-State Lithium-Ion

Solid-State Lithium-Ion

In brief: A solid ceramic electrolyte replaces the liquid electrolyte in today’s lithium-ion cells, leading to a battery of which is usually nonflammable, doesn’t degrade over time, as well as doubles the amount of energy of which can be stored in a given volume. of which last part is usually possible because the solid electrolyte enables the use of pure metallic lithium within the negative electrode. The performance of solid-state batteries also improves with heat, eliminating the need for liquid cooling.

What might stop of which: The ceramic electrolyte is usually up to all 5 times heavier than the liquid alternative, as well as the thin, brittle sheets will need protection coming from jarring road impacts. Perform­ance also suffers in low temperatures.

Where of which stands: Dyson, the vacuum any of which also carries a grant coming from the British government to build an electric car, purchased solid-state-battery startup Sakti3 in 2015. However, Sakti3 uses a thin-film production method of which likely won’t scale for automotive applications. Researchers at the Sakamoto Group are working to produce the ceramic material in bulk with batches of powder.

Metal-Air

Metal-Air

In brief: Part battery, part fuel cell, a metal-air cell uses the oxygen coming from air pumped through the battery to drive the electricity-­generating chemical reaction. of which is usually much lighter than storing the oxidant as a solid material within the battery, resulting in batteries with up to 10 times the energy density of a lithium-ion one. ­Lithium-air batteries grab a lot of headlines, although there’s even more potential in zinc-air cells due to zinc’s abundance as well as low cost.

What might stop of which: Rechargeable metal-air batteries are a fairly recent development as well as have a limited number of charge-discharge cycles before their storage capacity significantly degrades.

Where of which stands: Arizona-­based Fluidic Energy has installed rechargeable zinc-air batteries in developing countries to act as buffers for unreliable electric grids. Tesla holds a patent for a vehicle of which uses a metal-air battery as a range extender after the lithium-ion pack is usually depleted, thus limiting the number of charge cycles the secondary battery faces.

A Better Battery? A Survey of What Might Come after Lithium-Ion

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