@ Roger Pham: H2 is the top notch escape artist among all elements. The only viable means to prevent H2 from escaping is to retain it within a graphene lining. The distance between the carbon atoms is too small to allow H2 penetration. Also, the bonding strength of the carbon atoms within graphene is far higher than that of the best steel products. IOW, graphene is the only known material that can safely secure H2 without any losses; H2 is extremely flammable and hence, dangerous.. The storage pressure within a graphene confinement is, for all tends and purposes, nigh to irrelevant but not so within any other material. Nothing other than graphene can prevent H2 from diffusion; the higher the pressure the faster H2 will diffuse. I, personally, am not confronted with any problems resulting from H2; not technically nor socially or politically. Until all those problems pertinent to H2 are satisfactorily solved it's best to leave hands off of the subject matter.

@ Roger Pham: The production of H2 via electrolysis with green electric power is a disgustingly inefficient procedure and a pure waste of valuable green energy. However, a method for production of H2, as described in the following link, would be to my liking. https://www.technologynetworks.com/immunology/news/bacteria-could-provide-cheap-clean-hydrogen-324819. I consider green energy as a somewhat limited resource and it should be used sensibly and not thoughtlessly wasted.

@ Lad: Dave states quite correctly that a battery is unbearable for a functional FC. It can however, in such a configuration, be dimensioned much smaller than in a conventional BEV. What he doesn't state is that presently every car owner is at the mercy of the OPEG countries and big oil; these vampires (monopolists) suck as much "blood" as they possibly can. A H2 infrastructure has much in common with the present fossil infrastructures. It is reasonably easy for big oil to switch from one to the other and keep their cash cows in their own pasture. They could care less about the OPEG countries. The push for H2 is mainly driven from big oil and their proponents. I've never worked for big oil so I personally care less. A BEV virtually grants everyone the freedom of self-sufficiency. If you can call your home your own, just install a PV-system on your roof top and make yourself independent of all parasites. Only those profiting directly or indirectly from big oil are interested in their future success however that may be maintained.

I agree with Lad. I'm convinced that a H2 economy is being pushed from big oil because a H2 infrastructure resembles the oil infrastructure very closely. It's not an all to big effort for big oil to switch from one to the other and with such a move, they can keep all their cash cows in their own pastures. IOW, their main interest is to maintain dependencies of status quo. Considering the development of various battery chemistries and architectures with the promise of high energy - and power densities, the problems still haunting us today, will be considered a joke tomorrow.

@ Davemart You remind me of my father. He was hell-bent that I receive a good education which he never had. After I had received my degree I was working together with him on a certain job. Attempting to improve the working process which was obviously more efficient and better he refused to co-operate. After a heated argument of why he was so insistent on doing it his way, his answer was, "that's the way I've always done it and that is the way it's going to be done". I said to him, "OK, but then you can do it yourself. Why did you insist that I receive a good education when you're not willing to accept any advice from me? WTH did I bother to get educated when my own father is unwilling to accept anything that I suggest". You're not my father but you're just as belligerent as he was. BTW, he changed his mind.

Powerful magnetic properties of Graphene. https://www.livescience.com/graphene-hides-rare-magnetism.html https://phys.org/news/2015-12-powerful-pseudomagnetic-fields-graphene.html Do R&D have a one-track mind? How else is it to explain that they cling to old established routes and are weary to tread on new paths? Graphene, an allotrope of carbon, is a light material with all kinds of amazing properties; a pseudo-magnetic effect is one amongst many others. Carbon is cheap and easily accessible. Why resort to expensive rare earths that are extremely expensive and difficult to access?

"I thinik that Kuh translates to cow ...." I assume that you meant to express the state of thinking (thinik / think?). "(not to be confused with Steuern which translates as steer)" That's the next boob you made. The noun Steuern is capitalized in German and is the plural form of taxes; in the singular form, it is correctly written as Steuer (singular). To steer a car or any other type of vehicle you must also consider the correct tense (past, present, future). As a verb, the word steuern is not capitalized and literally means steering (present tense); to steer, in German - steuer - is used in the imperative case. English is easy compared to German. Deutsche Grammatik ist, dazu verglichen, verdammt schwierig. And last but not least, the noun "Kuhscheiße" is a compound noun comprised of the nouns Kuh (cow) and Scheiße (sh..). The expression "Kuhscheiße" is not used in conversant German; rather only the second part of the compound noun. What a load of sh...

Use the electricity right there were you generate it (solar or wind), buffer it with battery packs and it's 4x more efficient than H2.

As fundamental as the main law of thermodynamics itself is the fact that all the steel, necessary to support a H2 infrastructure, produces 1.7 tons of CO2 for every ton of steel produced; this pertains to the distribution of H2 just as well. When producing true "green H2" (not just green washing), the overall "well to wheels" efficiency is exasperatingly poor; high pressure storage leads to unaccountable losses. The only way to implement a H2 infrastructure is to store that H2 as e.g. LNG and implement a FC that functions with LNG without resorting to the complicated method of a reformer to recoup the H2. Additionally, employ this method only there where it is warranted that the unavoidable thermal losses are put to good use and not just wasted. Any other application is just a continued waste of energy and financial resources and a continuation of irresponsible emissions.

It appears to me that GM is advice resistant. Will they ever learn?

"....but 2/3 of global fleet to remain gasoline-powered in 2050." Keep on repeating such flatulent comments and at one point you'll start believing them yourself.

Looks like the front-half of a vehicle. Add the rear-half to it, triple the battery capacity and triple the price and you wont be able to keep up with demand.

BTW, there is still enough time, effort, and money being invested in the improvement of the ICE. What a waste!

Yes I agree; they've had only fourteen years to gain some headway.

Instead of looking backwards and attempting to improve the past why not look forwards and improve the future. The carbon allotrope - graphene and its amazing attributes - was discovered in 2006 or 14 years ago. In this time, research has been unable to produce a graphene yarn suitable to replace the copper windings and improve the performance beyond description of an e-motor. What a failure!

https://www.innovationnewsnetwork.com/new-hybrid-supercapacitor-to-improve-upon-conventional-batteries/7363/ News like this is more impressive and promising to me than any Fuel Cell BS-tales.

Anyone suggesting a pipeline or truck / train distribution of H2 should bear in mind that every ton of steel produced to warrant such infrastructure is the cause of 1.7 tons of CO2 emissions.

Use an ion conductive polymer and you'll have your electrolyte and separator all-in-one. But that already constitutes cell chemistry which I deliberately wanted to avoid because in my opinion this is not a part of the three basic major aspects determining the overall cell structure. Beyond that, I personally favor 3D structures that bear far more potential than the the commonly employed 2D cell designs.

@ gryf The three most important aspects of a cell are; 1) Electrode materials (anode and cathode) 2) Electrolyte 3) Cell geometry (structure / design / architecture) These aspects determine energy density per mass (kg) and volume (ltr.). To achieve a max. energy density, those major aspects must be optimized.

Electric driven planes use most energy during the lift-off phase. Instead of employing a steam driven catapult like on an aircraft carrier, why not employ a linear e-motor to deliver the major boost for lift-off and reduce the load on the batteries to enable more range?

You got it EP. These Greedys are using the same screwdriver that big oil has been using for decades.

This design looks familiar to me. In 2005 I received a patent for a rotary engine with a rotating elliptical piston and rotary valves. The advantages of that design were the elimination of all the disadvantages that the Wankel engine posed. None of the car MFRCs worldwide showed interest at that time. After five years of wasting time and money on the patent rights, I released the patent around 2010. What a coincidence!

It's the same paradoxical situation as with nicotine; almost everyone knows it's harmful but it is being ignored. The rats profiting from nicotine consumption do not differ from those profiting from other disastrous expectations. Most, if at all, discover the true implications before it is too late.

I'd personally prefer a CAN bus. It's more reliable and reduces e-smog.

Can be, could be, maybe, might be, perhaps but its not. Pollution is the cheapest way with the highest returns.