Appreciate you accepting this as the answer for your question, and I hope
your exams went well.
Even though I have found references going back 3-4 years for the model car,
I do not find it a good sign that even Daido's website does not appear to
make any mention of it.
I have very little doubt that Daido could indeed make such a model, as it
appears they have the technology, or licenses to the technology, that would
allow them to do so. Unfortunately. as so often happens with such things,
I would not bet on it coming to fruition, and if so, being readily available
in the U.S.
Here are two photos of a toy car that was reported to be retrofitted by
Daido with a hydrogen fuel cell.
You have no doubt seen this I4U News report on the Daido toy car.
"The Fuel Cell Toy Car will sell for 20,000yen."
20,000 Yen is currently around US$170.
You might be better off contacting Daido directly.
"DAIDO METAL" Inquiries web page.
Rather than look any further, Thames & Kosmos makes a fuel cell kit that
one can buy right now.
"The Thames & Kosmos Fuel Cell Car & Experiment Kit provides a playful
introduction to one of the most significant technologies of the early
21st Century. With this kit you can build a model car that actually runs
"Fuel Cell Car Kit - FREE SHIPPING"
"Award winning fuel cell kit! Build your own hydrogen fuel cell with this
kit. Assemble and Experiment with a Unique Reversible Fuel Cell Kit."
The above runs $119.95 with the noted free shipping.
Herer are some hints on the fuel cell technology that Daido might be
using in this fuel cell toy car.
"Annular Feed Air Breathing Fuel Cell Stack"
"Los Alamos National Laboratory (LANL) staff executed a Non-exclusive
License Agreement with the Japanese company Daido Metal Co., Ltd., a
bearing manufacturer. The company has also developed a fuel cell for
cellular phones and is currently marketing lighting fixtures and toy
cars powered by fuel cells. The company is also working with Honda
Motor on the development of capacitors as a supple mentary power
source for fuel cell automobiles. The license with LANL covers U.S.
patent rights to a portion of its fuel cell portfolio entitled
'Annular Feed Air Breathing Fuel Cell Stack.' LANL scientists
developed the unique, cylindrical fuel cell design that is ideal for
low- voltage, low power applications such as flashlights, laptop
computers, remote-controlled toys and radios."
A United States Patent and Trademark Office (USPTO) search on "Annular
Feed Air" produces the following patents.
- 6,423,437 Passive air breathing fuel cells
- 5,753,383 Hybrid self-contained heating and electrical power supply
process incorporating a hydrogen fuel cell, a thermoelectric generator
and a catalytic burner
- 5,595,834 Annular feed air breathing fuel cell stack
- 5,514,486 Annular feed air breathing fuel cell stack
- 4,955,349 Device for preparation of a fuel-air mixture for internal
Although not Daido, and it might not be the same technology that
Daido uses for their toy car, this might be of interest.
"Portable Fuel Cell Battery for Wireless Phones"
I have found a references going back to 2000 that mentions Daido
doing work with Proton Exchange Membrane (PEM) Fuel Cells.
"This animation shows the process that goes on inside an individual
fuel cell. The red Hs represent hydrogen molecules (H2) from a
hydrogen storage tank. The orange H+ represents a hydrogen ion after
its electron is removed. The yellow e- represents an electron moving
through a circuit to do work (like lighting a light bulb or powering
a car). The green Os represent an oxygen molecule (O2) from the air,
and the blue drops at the end are for pure water- the only byproduct
of hydrogen power."
"FuelCellWorks - Inside the Industry News Letters ... 2006"
"Patents ... Split cell type fuel cell stack ? Daido Metal Company Ltd."
This document links Daido with DCH Technology.
"... In September, 2001, DCH Technology announced that Daido Metal Ltd.,
(Nagoya, Japan) DCH?s joint venture partner for the manufacture and sale
of fuel cells in the Asian markets ..."
DCH Technology has a website.
"The Fuel Cell Shop helps you locate fuel cell products to fit almost any need."
They feature a "Hyco Fuel Cell Car Basic."
"By using a reversible PEM fuel cell, which can work as both an electrolyzer
and a fuel cell, the car is able to produce its own fuel (hydrogen and oxygen
from distilled water) when plugged into a voltage source."
The above "fuel cell car" resembles the "Thames & Kosmos" car.
They also have other products for sell, including fuel cells.
As both the "Thames & Kosmos" and the "DCH Technology" models use an
electrolysis process to extract hydrogen and oxygen to use in their
power cells, I do not see any thermodynamic problems. The Daido model
no doubt uses the same process.
From my reading, and for all intents, the electrolytic process is more
or less "perfectly" offset by the reversion process.
As to your concerns about the second law of thermodynamics, perhaps this
page will address those issues.
"Electrolysis of Water"
"By providing energy from a battery, water (H2O) can be dissociated into
the diatomic molecules of hydrogen (H2) and oxygen (O2). This process is
a good example of the the application of the four thermodynamic potentials.
Hydrogen Fuel Cell
A fuel cell uses a chemical reaction to provide an external voltage, as
does a battery, but differs from a battery in that the fuel is continually
supplied in the form of hydrogen and oxygen gas. It can produce electrical
energy at a higher efficiency than just burning the hydrogen to produce
heat to drive a generator because it is not subject to the thermal
bottleneck from the second law of thermodynamics."
If you need any clarification, please feel free to ask.
Search strategy: Examined the Daido website.
Google search on: Daido toy OR car
Google search on: Daido "fuel cell"
Google search on: "fuel cell" model car
Google search on: "fuel cell" efficiency electrolysis
Looking Forward, denco-ga - Google Answers Researcher