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Tag:

energy density

Tesla Battery Pack Patents Reveal a Different Kind of Hybrid

written by Walter Wang

A family of Tesla patents and pending applications relating to a hybrid battery system has been generating a bit of buzz (see, e.g., Cleantechnica’s story here).

The patent family includes U.S. Patent Nos.

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October 21, 2013 1 comment
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Electrode Coating IP Supports Electrovaya Battery Innovation

written by Walter Wang

A previous post discussed advanced battery maker Electrovaya’s lithium ion polymer technology, which the company says provides faster, more efficient transport of lithium, and therefore greater energy density.

Several years ago, Electrovaya partnered with Tata

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May 13, 2013 0 comment
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Sulfur Based Batteries and Plastics to Alter Electric Vehicles Landscape?

written by Walter Wang

A plastic material is any of a wide range of synthetic or semi-synthetic organic solids that are moldable. Plastics are typically organic polymers of high molecular mass, but they often contain other substances. How about mostly sulfur? A new chemical process can transform waste sulfur into a lightweight plastic that may improve batteries for

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April 17, 2013 0 comment
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GM Hails More Powerful Electric Car Battery

written by Walter Wang

Back in February, Envia Systems made an announcement regarding tests of its electric vehicle battery technology, and said it had achieved an energy density of 400 Watt-hours/kilogram (Wh/g) with battery technology for electric vehicles. Last week, General Motors,

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August 13, 2012 0 comment
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Scanning the Battery Frontier

written by Walter Wang

Often described as the next evolutionary leap in battery systems, solid state batteries substitute solid electrolyte films for liquid electrolytes, thus eliminating the need for cooling devices and supporting materials and making the battery more stable and efficient. Theoretically, they have the potential to cut both the size and the price of batteries in half.

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May 29, 2012 0 comment
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Plug-In Hybrids: Now That’s Complexity

written by Walter Wang

Below is a wonderful video that explains the multiple drivetrains at work in the Chevy Volt. A couple of immediate impressions:

1) No wonder the price on this sucker is $41K, with all that going on. The bill of materials (costs of the individual components) must be enough to choke a horse. And the non-recurring engineering costs must

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April 11, 2012 0 comment
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Changing the Equation for Electric Transportation

written by Walter Wang

The migration to electric transportation is going through a period that some of us anticipated: a bit of nervousness brought on by the fact that the value proposition for the consumer is simply not there yet. EV start-ups are having a hard time getting there, which has given the established auto industry a great deal of time to breathe, take its time, hedge its bets, and, perhaps

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March 8, 2012 0 comment
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New Lithium-Ion Battery Could Reduce Cost of EVs, Increase Range

written by Yale Environment 360

A U.S.-based company says it has developed a new lithium-ion battery with an energy density of 400 watt-hours per kilogram — roughly twice the density of existing rechargeable batteries — an innovation the company claims could significantly increase the range of electric cars and ultimately cut the price of battery

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February 29, 2012 2 comments
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With Hybrid Capacitors, LEDs Have a Bright Future

written by Walter Wang

LED lights, or light emitting diodes, are increasingly more common in newly manufactured devices. A beneficial addition to solid-state lighting, LEDs provide long-life lighting technology in applications such as safety street lighting, vehicles, medical devices and

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September 29, 2011 0 comment
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MIT Researchers Create Better Lithium Batteries

written by Walter Wang

Lithium-ion batteries are everywhere these days. From cellphones to electric cars, they dominate the market for rechargeable devices. One of the main challenges faced by the electric vehicle industry is related to the energy density of electric car batteries.

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August 1, 2011 1 comment
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Primus Energy Storage Tech Goes With the Flow

written by Walter Wang

Primus Power is a Hayward, California, startup that makes flow batteries for grid-scale energy storage. A flow battery is a type of rechargeable battery that works by the flow of electrolytes through an electrochemical cell, which converts the chemical energy to electricity.

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June 9, 2011 0 comment
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How to Bring Electric Vehicles to the Mass Market

written by Walter Wang

Electric cars are not a new concept in the automotive industry. They were around before the pre-eminence of the internal combustion engine in the 1890s. They were introduced again in the United States in the 1990s with GM’s EV1, but were dropped when GM decided they are unprofitable. Now the

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June 1, 2011 2 comments
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Isobutanol From Cellulose Hailed as Biofuel Promise

written by Justmeans

A team at the BioEnergy Science Center (BESC) announced that it succeeded to produce isobutanol directly from cellulose. It is the first time anyone does that.

The process presents several advantages, including saving time and money. Besides, isobutanol is a higher-grade of alcohol than ethanol.

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March 11, 2011 0 comment
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A New Energy Future for Our Country and Our Armed Forces

written by

One of the central questions yet to be answered in energy technology is how to store energy from alternative sources like solar or wind that don’t always produce power when we need it.  For the Navy and Marine Corps, this is particularly important, as we move toward our established goal of at least 50% non-fossil fuel use by 2020.

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March 9, 2011 0 comment
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