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Samsung Develops ‘Graphene Ball’ Battery With 5x Faster Charging Speed

Samsung Develops ‘Graphene Ball’ Battery With 5x Faster Charging Speed

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Heart44 writes: A number of outlets are reporting a Samsung laboratory breakthrough allowing smaller and faster charging lithium-ion batteries using three-dimensional graphene. Digital Trends reports: "Scientists created a ‘graphene ball’ coating for use inside a regular li-ion cell, which has the effect of increasing the overall capacity by up to 45 percent and speeding up charging by five times. If your phone charges up in 90 minutes now, that number will tumble to just 18 minutes if the cell inside has been given a graphene ball boost. What’s more, this doesn’t seem to affect the cell’s lifespan, with the team claiming that after 500 cycles, the enhanced battery still had a 78 percent charge retention. The graphene coating improves the stability and conductivity of the battery’s cathode and electrode, so it’s able to take the rigors of fast charging with fewer downsides." The technical paper describing how the graphene ball works and how it’s produced is published in the journal Nature.



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November 29, 2017 at 02:09AM

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Lithium Self-Discharge and its Prevention: Direct Visualization through In-Situ Electrochemical STEM

Lithium Self-Discharge and its Prevention: Direct Visualization through In-Situ Electrochemical STEM

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Scientific Achievement

We show that Li anode morphology and solid electrolyte interphase structure is dependent on surface compression, which affects the amount of self-discharge for an exciting solvent-in-salt electrolyte. Additionally, we show that coatings can suppress self-discharge.

Significance

In engineering batteries that contain a Li-metal anode for certain electrolytes, we show that cell compression and coatings will greatly impact the cell stability and performance.

Research Details

  • Sandia-microfabricated electrochemical TEM discovery platform, identified key factors in controlling SEI character and Li-metal morphology.
  • Li self-discharge was improved with cell compression and could be further improved with the use of a protective coating on the current collector, which also showed improved Li nucleation density.
  • In-situ TEM cells are not compressed, so experiments must be carefully designed to ensure relevance.

DOI: 10.1021/acsnano.7b05513

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November 20, 2017 at 03:37PM

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Advanced Battery Systems 101 Course Is a Great Success

Advanced Battery Systems 101 Course Is a Great Success

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Last year, the board of directors of NAATBatt International decided that, in furtherance of its organizational mission to promote advanced battery manufacturing in North America, NAATBatt would offer a series of courses to provide executives new to the industry and others interested in batteries with a basic primer on battery technology.  The initial course, titled […]

The post Advanced Battery Systems 101 Course Is a Great Success appeared first on Naatbatt.

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November 17, 2017 at 09:05AM

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Fisker has filed patents for solid-state batteries

Fisker has filed patents for solid-state batteries

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By Joel Stocksdale

It seems that we’re on the cusp of a solid-state battery revolution. The latest company to announce progress in developing the new type of battery is Fisker. It has filed patents for solid-state lithium-ion batteries and it expects the batteries to be produced on a mass scale around 2023.

Though Fisker is a very small car company that is currently taking deposits for its upcoming EMotion electric sedan, there are reasons to believe that the company could fulfill this promise. One of the members of the battery-development team was a co-founder of Sakti3, a company that formed to develop new batteries and announced its research into solid-state technology back in 2011. That company was purchased by Dyson, the vacuum cleaner company, which also intends on producing electric cars that AutoExpress reports will feature solid-state batteries in 2020. Toyota is also expected to have solid-state batteries just ahead of Fisker around 2022.

The reason all these companies are working on developing solid-state batteries is because they present a whole host of advantages over what you’ll find in today’s phones, computers and cars. The two big ones are greater energy density and rapid charging times. Fisker claims the batteries it’s developing have an energy density 2.5 times that of current batteries, and they should be capable of providing a 500-mile driving range. The company also says the batteries could be recharged in as little as a minute. Both claims are similar to past claims from others, including Sakti3. Other benefits include lower estimated cost than conventional lithium-ion batteries as well as very little risk of fires or explosions.

Fisker also announced that it will display the new battery technology at the Consumer Electronics Show in January. It will be on display along with a close-to-production EMotion, which will be using more conventional lithium-ion batteries from LG Chem. That car has its own impressive claims with a range of more than 400 miles and the ability to regain around 125 miles of range in about 9 minutes. It will also retail for around $130,000, and the company is taking $2,000 reservations now. Fisker intends for it to go into production in 2019.

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via Engadget http://www.engadget.com

November 14, 2017 at 05:15AM

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Tesla has agreed to buy privately held Perbix Machine, which designs automated manufacturing equipment. Perbix has… https://t.co/UZqUcOmeTs



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November 13, 2017 at 11:50AM

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Ford will build EVs with Chinese automaker in $765 million deal

Ford will build EVs with Chinese automaker in $765 million deal

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Once the Chinese government approves the deal, the enterprise will build a manufacturing facility in the Zhejiang province to produce EVs under its new brand, Zotye Ford. As CNET points out, both parent companies signed an agreement back in August that paved the way for this partnership.

“Zotye Ford will introduce a new brand family of small all-electric vehicles,” Ford group VP Peter Fleet said in the statement. “We will be exploring innovative vehicle connectivity and mobility service solutions for a new generation of young city-dwelling Chinese customers.”

While China hasn’t set a specific deadline to ban fossil fueled cars, as France and UK expect to phase out by 2040, the clock is ticking. Foreign automakers have two choices: Pay a hefty 25 percent import tax on vehicles or partner with a local company to produce cars in the country. This gives manufacturers like Zotye experience (though that company in particular already produces electric and battery-powered vehicles) while granting outside conglomerates access to Chinese markets.

Companies are making deals to get a slice of the country’s EV pie ahead of time because, while its ratio of car owners is low (one in five people), China’s 1.4 billion-person population means nearly 300 million vehicles currently on its roads.

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via Engadget http://www.engadget.com

November 8, 2017 at 02:15PM