nickel hydroxide as electrode

[sucahyo]

I see. Thanks for the info.

Do you know what metal combination that can produce most gas but with material still easy to get?

I am thinking maybe we can get rare material from scrapped something.

[sucahyo]

I think I know the reasno why the small metal give more bubble.

I do another experiment, this time with ground water only and 9 volts battery.

Half submerged spoon will release bubble when using 9 volts battery. More current detected when the spoon is submerge into water more.

When using 1.5 volts battery, half submerged spoon do not release bubble. The bubble is formed on it's surface after a while but not released. But when it's only the spoon tip that touch water, it will release bubble.

From my experiment I conclude that:
- Electrode area size need to be matched with electrolyte and voltage used. Too big will prevent bubble release, too small is not efficient.
- Drawn current increase on surface area size and reduced electrode distance

[sucahyo]

I made mistakes. It turn out that small metal in the middle of battery is not nickel hydroxide. It's the outside part. More bubble caused by smaller surface area.

[exnihiloest]

...
I believe Paladium absorbs 3000 times it's weight in hydrogen.
...

Not its weight. Its volume. Palladium can absorb up to 900 times its own volume of hydrogen (this does not change much the weight of palladium).

[triffid]

Some canadian dimes are made of nearly pure nickle.It depends on the year they were minted.An internet search should tell you which tears.Triffid