Salt Battery

I don't see how it works as a battery, the products from electrolysis, H₂ and Cl₂ are gases and leave the cell.

Chlorine is nasty stuff. I've only gotten a whiff of it once, and that was enough!

Lot's of WWI soldiers can attest to Chlorine's nastiness!

I can. too. In the chemical plant, I got a whiff of it, too. However, small amounts of it are tolerant. So, can a small battery be made like this?

Yes, obviously, though the key questions are 'energy stored per unit volume' and 'energy stored per unit weight'. These things affect the economics of the installation.

Risk management in such an installation is quite another thing.

I was servicing a water treatment facility,I had to enter a room with a chlorine injector that used chlorine gas tanks.

There was a ventilation fan at the floor level of the room,and it was not running.

The door was vented at the bottom to allow air flow inside to replace the air being blown out by the fan.The room was thus designed to have a slightly negative pressure with the fan running.

I told the plant operator that the fan should always be on,and never turned off.He said that they were in an energy conservation mode,and was told to turn it off by management.

I refused to enter the room until the fan had been running for at least 30 minutes.As soon as I finished and walked out the door,the operator turned off the fan.

A week later,he was hospitalized with chemically induced pneumonia.(Pulmonary edema).

He was intubated to provide enough oxygen to his system.

It took many weeks for him to recover.

Chlorine makes the air sacs in your lungs "sweat" and you will drown in your own fluids.

There is no cure,there is only supportive treatment.

Be careful around chlorine in gas or liquid form.

It smells like bleach,which emits a small amount of chlorine,but even bleach can produce a deadly amount of chlorine gas if mixed with other chemicals,especially ammonia.

Found this...

http://www.instructables.com/id/DIY-Chlorine-Battery/

https://www.merriam-webster.com/dictionary/Hooker%20cell

http://www.springer.com/?SGWID=4-102-45-152620-p33274906

I think what you want is a reversible fuel cell....

https://en.wikipedia.org/wiki/Regenerative_fuel_cell

https://www.energy.gov/eere/fuelcells/reversible-fuel-cells-workshop

http://www.fuelcellstore.com/fuel-cell-education-products/kits/hydrogen-education-kits/reversible-fuel-cell-kits/solar-hydrogen-education-kit-fcjj-16

Thanks. I'm going to try it with brine and see what happens.

There was an article about an electric powered truck that was in use for about 50 years. The batteries were rebuildable. That's the kinda battery I would like to have to store my solar power.

It's been done.... by a company called Aquion Energy in 2008, now owned by Juline-Titans LLC, an affiliate of the China Titans Energy Technology Group, who bought the company for ~$9 million after the company declared bankruptcy....they moved the manufacturing to China, surprise surprise, and are producing these batteries for energy storage....

..."The battery materials are non-toxic.^[25] As of early 2014, the cathode used manganese oxide and relies on intercalation reactions. The anode was a titanium phosphate (NaTi₂(PO₄)₃).^[26] The electrolyte was <5M NaClO₄.^[27] A synthetic cotton separator was reported.^[28] The electrode layers were unusually thick (>2 mm), which reduces power density. The device used Siemens power inverter technology.^[29]"...

https://en.wikipedia.org/wiki/Salt_water_battery

https://en.wikipedia.org/wiki/Sodium-ion_battery

https://en.wikipedia.org/wiki/Aquion_Energy

Check the reference list in the above link for more info...

Stainless Steel

Stainless Steel Current Collector

Base Oxide

Manganese Oxide Cathode

Cotton

Synthetic Cotton Separator

Carbon

Carbon Titanium Phosphate Composite Anode

Saltwater

Alkali-ion Saltwater Electrolyte

https://www.solarelectricsupply.com/solar-batteries/aquion-energy-aspen-ahi-saltwater-battery

There is a company, in Wyoming, that I picked up a load at.

My student had to stay inside the security building.

They gave me an emergency 1 hr.. respirator.

Never went there again, thank goodness.

My brother-in-law used to work as an engineer at a chlor-alkaline plant.

He described it as a bomb waiting to go off that could level the city it was in.

Then the bottom fell out of chlorine (paper mills went to peroxide).

It is potentially very dangerous.

You may want to consider the Edison iron battery.The power density is not as high as some chemistries,but it is very durable and can be recharged thousands of times.

It does not matter how low you discharge it,of if it runs out of electrolyte it is not damaged.

The weight is greater than lead acid batteries of the same power,but in a stationary application it does not matter.

Recent improvements on the original design have yielded a very fast charge,discharge cycle with thousands of recharge cycles.

Here's a link:

https://ironedison.com/

Also check out the iron/lithium batteries at this site.