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Researchers Predict Next-Gen Batteries Will Last 10 Times Longer ( 168

Lithium-metal electrodes could increase the storage capacity of batteries 10-fold, predict researchers at the University of Michigan, allowing electric cars to drive from New York to Denver without recharging. Using a $100 piece of technology, the team is now peeking inside charging batteries to study the formation of "dendrites," which consume liquid electrolytes and reduce capacity. Slashdot reader Eloking quotes New Atlas: Battery cells are normally tested through cycles of charge and discharge, testing the capacity and flow potential of the cells before being dissected. Dasgupta and his team...added a window to a lithium cell so that they could film the dendrites forming and deforming during charge and discharge cycles.
In a video interview they're reporting that dendrites can actually help a battery if they form a small, even "carpet" inside of the battery which "can keep more lithium in play." According to the article, "The future of lithium-ion batteries is limited, says University of Michigan researcher Neil Dasgupta, because the chemistry cannot be pushed much further than it already has. Next-generation lithium cells will likely use lithium air and lithium sulfur chemistries."

Comment Re:Signal triangulation = GPS (Score 2) 174

Some weapons are GPS-guided, such as JDAM-assisted bombs.

The world is gearing up for a heated conflict. Wether it occurs or not is a different story. But last month's US chief of armies gave a chilling speech where they expect mass casualties within 10 years, to the likes of WWII.

The nations are placing their pieces on the map and gearing up for defence. GPS denial devices is an obvious counter-measure, assuming it actually deter military -grade GPS systems (which are far more precise than civilian ones).

Comment Fallacious association (Score 3, Informative) 99

It's catchy to slide in Tesla in unrelated articles but just because it uses batteries doesn't mean they are prone to fires.

The one that famously caught fire and torched a supercharger in Europe was caused by a genuine one-off assembly line defect.
The one that caught fire in France during a test drive was found to have a a faulty electrical connection.
The one that crashed on autopilot and "battery caught fire" actually didn't burned down: it smashed into a tree separating the front of the vehicle from the cabine, tearing the battery apart where a small number of cells separated from the rest and autopilot tesla crash fire caught fire, away from the vehicle and the rest of the battery pack. Driver dies of impact.
Another one caught fire due to hitting debris where car alerted driver to pull aside.

Complete list of EV fires exonerate batteries for the most part, as most EVs (Tesla and Chevy Volt) have liquid-cooled battery packs, unlike consumer electronics (esp. handheld devices).


Upcoming Blade Runner Sequel Gets a Title: Blade Runner 2049 ( 136

The sequel to Ridley Scott's 1982 sci-fi classic "Blade Runner" is officially titled "Blade Runner 2049." Harris Ford is confirmed to be returning as Rick Deckard. Other stars include Ryan Gosling, Jared Leto, Robin Wright, Dave Bautista and Lennie James. The Verge reports: There's a hashtag included in the press release, of course (#BladeRunner2049), but other than that there's little else revealed about the story itself. There is a new picture out, however, with Scott, Villeneuve, Gosling, and Harrison Ford chatting over some Blade Runner weaponry. Whether you like or hate the new title will most likely depend on how excited you are about knowing the exact year that the new film takes place. The original was set in 2019, so it's good that they're tacking on an extra 30 years because the Los Angeles of today really doesn't look anything like the dystopian vision Scott wowed audiences with way back when. But hey -- there's still time. Blade Runner 2049 is scheduled to arrive in theaters on October 6th, 2017.

Comment Re:Ya know... (Score 1, Insightful) 116

Dont want to sound like a fanboi but, lots of hate & vendor lock-in comments in regard to Apple truly isn't warranted.

The iPhone 4s (ancient by any smart phone measure) is capable of running iOS 9 while base line for iOS 10 is the iPhone 5.

Adoption of iOS 10 is now > 50% on all compatible devices.

So, while Linux and Android fans hate on, Apple supports and updates it's users.


Ask Slashdot: What Are Anonymous Ways To Pay For Goods and Services? 212

Long-time Slashdot reader mspohr submitted a report a couple of days ago from Richard Stallman via The Guardian, which argues that we should be able to pay for news anonymously. "Online newspapers and magazines have come to depend, for their income, on a system of advertising and surveillance, which is both annoying and unjust... What they ought to do instead is give us a truly anonymous way to pay." In response to that report, an anonymous Slashdot reader writes: There was a recent article posted here on Slashdot about Richard Stallman and his attempt to make paying for online content anonymous. The corollary to that question is: What are the remaining ways to pay for stuff -- in the "real" world and online -- that are truly anonymous? Even cash can be tracked, but what about other methods? Have we completely given up on anonymous payments? No more anonymous/numbered bank accounts, no more pre-paid/virtual bank cards in Europe (just happened recently), for that matter no more prepaid phone numbers (you have to register the number in Europe)? What is left after we had let the politicos run rampant with forced registrations of all payment services?

Comment Re:Lambda's plug poor OOP language design (Score 1) 427

In Obj-C, Code Blocks are an awesome way to un-spaghetti-fy source code by doing away with protocols.

Translate that to Java:

In Java, Lambdas are an awesome way to un-spaghetti-fy source code by doing away with interfaces.

In Obj-C, we've been able to clean up and streamline our code a lot using completion blocks. But as with any technique, you can be an idiot using it. It's all about proper usage. Knowing when to eat your spag and when to eat the meat balls.

Disclaimer: I work for Oracle, using native iOS tools & languages. Our project embeds some HTML server-provided pages, connects to the server using server-side service calls all written in Java. I have no opinion on anyone's dislike of the company. But from the inside, it's not trying to be fundamentally evil. But then again, I'm not a paying customer.

Comment Re:Does anyone really use these numbers? (Score 1) 56

118,000 EV miles. 53 miles per charge. That's 2,226 full charge cycles. Sparkie travels an average of 66,000 miles per year (long commute) since 2011 (2012 model... 2011... 5 years).

That's more distance than most will do with their dino cars.

Proper thermal management is done on these batteries because GM did their work: they have the largest battery lab.

The Volt's Gen2 battery is 18.5kw but only about 14.5 is available for driving. The remainder is used for thermal management and avoiding deep charge cycles, which is really what destroyes life expectancy of Li-Ion batteries. And that's why they last long.

Gen 1 used different battery capacities but still had that ~20% thermal overhead. Also, unlike laptop and phones, these batteries are liquid-cooled with their own glycol, 5-channel cooling system (Tesla only has a single-chanel system).

Disclaimer: I both a Gen2 Volt and a CSRT4.

My Volt will rot to the ground before I have to worry about the battery.

Comment Re:Does anyone really use these numbers? (Score 2) 56

You wont have to replace your hybrid battery. That's myth brought on by cheap laptop & cell phones horrible power managements. Further propagated by the Cock Brothers (typo intended).

Sparkie raked up more than 118,000 EV miles, on a car with more than 330,000 miles with no loss of charge on his 2012 Chevy Volt.

Chevy has recently mentioned is has replaced exactly NONE of it's > 100,000 Volt batteries out there du to degradation.

Comment Re:Misleading (Score 4, Funny) 154

Planes do detect other planes in proximity with the aptly-named proximity warning. Miles in advance. With beeps buzzes and autopilot disengagement. They are called ACAS. There are various levels of support depending on version being used by an aircraft.

If the pilot fails to respond, there's a loud bang and a cut on his paycheck.

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