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Comment: Re:Maybe 40k (Score 1) 318

by WalksOnDirt (#47933677) Attached to: Is the Tesla Model 3 Actually Going To Cost $50,000?

Nobody is using the size of cells that Tesla claims to be interested in producing. If they get cheap enough companies might design some products around them, but, for example, they will be too fat for a cell phone.

Of course Tesla might make other sizes, but I doubt they will be in any hurry to do that.

Comment: Re:Container ships (Score 1) 486

by WalksOnDirt (#47872825) Attached to: To Really Cut Emissions, We Need Electric Buses, Not Just Electric Cars

Listing two obvious fallacies doesn't prove the initial statement is one, although at best it could only be true of sulfur based pollution. Of course, sulfur dioxide helps keep the planet cool anyhow, so maybe we shouldn't count it if it is released in the open ocean.

Comment: Re:Don't they use a lot of water (Score 1) 157

by WalksOnDirt (#47822573) Attached to: Reno Selected For Tesla Motors Battery Factory

They need Electrolytes...

The electrolytes used in lithium ion batteries don't use water. Water is unstable at those voltages.

Of course, the factory must use some water, if only for the employees drinking. I don't know how much, though. Perhaps it is worth mentioning that there appears to be a small river near the site.

Comment: CDR yes, SRM no (Score 1) 140

by WalksOnDirt (#47762339) Attached to: Climate Scientist Pioneer Talks About the Furture of Geoengineering

I don't see any problems with carbon dioxide removal, aside from potential local environmental problems. The methods include reforestation, adding iron to the ocean and grinding up serpentine.

Solar radiation management, like adding sulfates to the air, has lots of global environmental effects, and it doesn't do anything about acidification of the oceans.

It's best to consider these separately.

Comment: Re:Can we get a tape drive to back this up? (Score 1) 316

by WalksOnDirt (#47762295) Attached to: Seagate Ships First 8 Terabyte Hard Drive

Tapes has a crapload of drawbacks, write speed, read speed, the fact it's sequential (random access is painful) but it remains popular because you can drop it, smash it, submerge and then freeze it and all you have to do is roll the tape into a new case.

Maybe they have fixed it, but I heard some old stories about dropping tapes corrupting them.

Comment: Re:Economic risk (Score 1) 143

by WalksOnDirt (#47718375) Attached to: How Argonne National Lab Will Make Electric Cars Cheaper

Nicely written post, but you don't know what you're talking about.

Hydrogen is not the strongest reducing agent amount the stable elements. If you go by electronegativity it is cesium. Cesium is rather heavy, though.

Lithium would make a very good cathode (if we could just control the dendrites), but it's not what lithium-ion batteries use. Transition metal compounds are far from ideal for cathodes, but they have the advantage that we can make them work pretty well.

Lithium-sulfur is potentially the next battery after lithium-ion, if only we can make them last long enough.

Comment: Re:Stable? (Score 1) 119

by WalksOnDirt (#47555163) Attached to: Stanford Team Creates Stable Lithium Anode Using Honeycomb Film

I think you ask too little. What get me are quotes like this;

The team is looking at a price point of $25,000 for an EV battery range of 300 miles, which would be competitive with a 40 mpg gasmobile.

That's not actually what the team said, it is a paraphrase of something Chu said about what is desirable in an EV. The author apologizes in the first comment.

Don't blame the researchers for the idiocy of the article's author.

It is not best to swap horses while crossing the river. -- Abraham Lincoln