An 'H2 extender trailer'?

This idea came about with when I created the Outback 'Adventure' vehicle concept in a blog where I originally suggested creating H2 onboard the vehicle.  However, a safer option in case the micro-electrolysis or H2 fuel tanks became unstable due to high temperatures 'Outback' could be adding all of the equipment onto a 2, 4 or 6 wheeled trailer (using the same PV-biocomposite as the vehicle body), which could act as additional storage that can pump H2 into the vehicle H2 tank while the vehicle is stationary (a portable H2 pump!). It could also provide emergency water.

Note that the onboard Supercapacitor (made from 'flash graphene'), charged from the embedded PV cells, regen braking and coil suspension (H2X IP) could power the onboard micro-electrolysis for H2 production.

The 'H2 extender trailer' V3
H2 Extender trailer - V3.stl
exe File 14.3 MB

This can be viewed in 'Meshlab' (Windows/Mac) or 'Fast STL Viewer' (Android)

More design notes

The fabrication concept is that the portable H2 pump can be built into a standard Aluminium tandem trailer (the 6 trailer design probably needs to wait until I can get some space research funding). The truncated pyramid on top of the trailer tray would be built with an Al exoskeleton with detachable PV-biocomposite panels to access the inside space with the micro-electrolysis equipment. The side panels are angled at 60 degrees with a flat top so solar can be harvested at all times whether the vehicle is stationary or mobile and regardless of the time of day. Moonlight harvesting would be a bonus, which some PVs can now do!

When the pump is stationary:

-one long side panel could flip up 120 degrees from the top join to better harvest the sunlight if the sun is facing 180 degrees towards its opposite long side.

-the shorter/end panels could be repositioned to 90 degrees on either side join, pointing towards the sun, to maximise solar collection.

Key material research areas
1-
H2 tank and storage

biochar filled tanks eg.seaweed eg.kelp with hydrothermal activation with modified surface chemistry for many binding sites for H2
Needs to handle cold nights and hot days while the H2 contracts and expands inside the tanks

2-Micro-electrolysis
-Biochar (bc) as a catalyst for the Hydrogen Evolution Reaction (HER)
-Micro-electrolysis needs to function at temperature extremes and during vibration
OR produces H2 when the trailer is stationary
LI: what is the Silicon content of seaweed?
LI: what is the best feedstock and activation process of biochar for the HER?

3-supercapacitor
Eg. Flash graphene
Eg2. Hydrothermal activation of bc
Eg3. Plasma activation of bc

4-PV-embedded bc/Carbon fibre-based bio-composite
A)PVs eg. Buckyballs, Perovskite, graphene
B) bio-composite eg. bc and epoxy resin conductive polymer, Carbon-fibre + ?

What are the markets (in no particular order)?

Space, evac, military, intrepid explorers, remote communities, temporary settlements or camps, grey nomads, adventurous backpackers and more. It could be leased out at car hire places. It could also be adapted as a portable H2 pump to provide H2 fuel for any H2 or hybrid H2/electric vehicles - handy for long routes.