Proton exchange membrane fuel cell
Proton exchange membrane fuel cells, also known as polymer electrolyte membrane (PEM) fuel cells (PEMFC), are a type of fuel cell being developed for transport applications as well as for stationary fuel cell applications and portable fuel cell applications. Their distinguishing features include lower temperature/pressure ranges (50 to 100 °CTemplate:217) and a special polymer electrolyte membrane. PEMFCs operate on a similar principle to their younger sister technology PEM electrolysis. They are a leading candidate to replace the aging alkaline fuel cell technology, which was used in the Space Shuttle.
Science
PEMFCs are built out of membrane electrode assemblies (MEA) which include the electrodes, electrolyte, catalyst, and gas diffusion layers. An ink of catalyst, carbon, and electrode are sprayed or painted onto the solid electrolyte and carbon paper is hot pressed on either side to protect the inside of the cell and also act as electrodes. The pivotal part of the cell is the triple phase boundary (TPB) where the electrolyte, catalyst, and reactants mix and thus where the cell reactions actually occur. Importantly, the membrane must not be electrically conductive so the half reactions do not mix. Operating temperatures above 100 °C are desired so the water byproduct becomes steam and water management becomes less critical in cell design.
Podcasts:
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by V.i.c.
Boom
by: V.i.c.{Intro}
V.I.C.: calling all zone(x2) yeah u already know who it is i got my home girl legacy
Legacy:the baddest bitc*
V.i.c.:yeah
Legacy: im on my shi*
V.I.C.: im on my shi*
V.i.c.:(chorus)
all ways trap(Boom)
block (boom)hood(boom)aye(boom)east side in this ba,west side in this ba,
north side in this ba, south side in this ba
trap(Boom)
block (boom)hood(boom)aye(boom)east side in this ba,west side in this ba,
north side in this ba, south side in this ba
V.I.C.(1 verse)
good as the best of them,but as bad as the worst but don't
test me,who get money but better move over cuz i'm coming
so let me tell u something about a player (wus up) they
they let me in the game but they now im uh start playing (watch out) they let me in the game'bout they know what they
want to win so they gotta get the best to be the F****** animal,but im the f****** best i be blowing like the wind i anit talking cigarette,
i be ballin' like the speare im im not talkin' about the mats, praises on there necks,but frankly i'm in my zone and i know u b****
smell it and not just my cologne,let me bring it home Ni*** u just dont want it i do this it nothing n*** we here ain't running ain't nothing about me timmy
i can back it i aint frontin,i do this for my city for atl i be stuntin ah something (off the delix3)and u know i'm worth a millix3 i ain't worried