This sub seems unlikely to grow. In particular, hydrogen also will be used in industry and could be used in combustion engines. So a sub dedicated to fuel cells exclusively isn't capturing the entirety of the discussion. So try visiting /r/hydrogeneconomy once in a while

I have a really stupid question. Do fuel cells only output a constant power? In other words, regardless of inlet pressure or flow rates of feedstock (H2 and O2) do they want to operate in a sweet spot of constant flow and pressure? Or can you throttle them? Like, I only want 1kw and then increase the pressure and flow rate and get 2kw out of it? I've seen some system has a wide output voltage range but what exactly controls that voltage? Is it a constant power system and so lower voltage outputs more current?

Any links would be super helpful! Thank you!

Does anyone know what kind of fuel cell is required to efficiently power a car to highway speeds?

Does anyone know anything about the viability of Plasma Kinetics solid state hydrogen storage tech? Is it viable? In what time frame?

Has anyone heard of any places testing or attempting to produce the fabled atomic battery?

Or alternatively any other fuel cell with 8x the energy density of lithium ion

I would like to start out with saying that I have done some research on the topic, I know that people have done it before (Specifically this company) and someone had made what looks like a drop in replacement for some models of e-bike batteries here.

What I was wondering is if anyone knew of someone doing a project adding fuel cells to a e-bike where they actually detail the steps they go through.

Obviously this kind of upgrade is only useful if you need the range, have a large enough bike/trike to support the fuel cells, etc.

If you are wondering, the common motor systems range between 500w and 750w. 48v is also common.

Thank you for any help you can provide.

So I'm currently looking at a

H2 Tanks - type 4 composite tanks; 5x 312l (max. 37.5kg: 350 bars) H2 Refuel time - <9 min (estimated) FC Stack Nominal Power - 60kW (Toyota FC Stack)

Fuel cell for a project. I find that a lot of FCs are described in capacity using '5x 312l' or other similar notations along with kg. I'm looking to find how that relates to kWh as that is our preferred unit of comparison. I'm hitting a snag in researching online for this.

Anyone got an answer?

We have an enabling coating technique that is able to coat large surface areas with exotic materials without large quantities of the material. Specifically we can protect reactive metals like aluminum from attack to make lighter cell stacks. We can also apply catalyst materials to the cells making various exotic materials within practical reach. This is able to make viable commercialization of cell chemistries that were previously cost prohibited due to cell weight and/or material cost.

Canary Media is proud to bring you the recently updated list of profitable publicly traded fuel cell firms. Drumroll, please...

https://www.canarymedia.com/articles/chart-of-the-day-fuel-cell-industry-profits/

Fuel Cell Vehicles (FCV) offer one of the best pathways to a green future of carbon-free mobility. Least we forget, EV’s need for recharging still utilizes the same power grid we’ve had for approximately a hundred years. The only issue holding back FCV’s is the generation of their necessary hydrogen. Currently we’re reliant upon petroleum to produce hydrogen. With hope for leaps-forward in technology to separate hydrogen from sea-water with electricity generated by wind turbines on a commercial scale or a carbon-neutral process to ‘crack’ hydrogen-rich ammonia on-board one’s own Fuel Cell vehicle… we could see the wide adoption of FCV’s at a surprisingly expeditious pace. One should have hope we’ll some have the much-needed hydrogen fueled world of the future.