Factory sea salt batteries

battery, energy storage, sea salt, molton flow, energy storage, electricity, dr. Ten, solar power, renewables, climate change, CO2, carbon, renewables, smart grid, storage

Sea salt batteries energy supply of the future – Duration: 1:20

In 2020, Start Up Dr.Ten aims to produce 500 000 batteries on sea salt.

Entrepreneur Marnix ten Kortenaar, battery scientist and the man behind the salt battery:

“In three years, a family pays only a couple of extra euros a month to store their solar power with our sea salt battery.”


The adventure began six years ago in Africa. Marnix ten Kortenaar volunteered in an African orphanage and noticed Africans bought expensive lead-acid batteries. This had to change. He wanted to produce a simple and cheap battery for the local communities.

Remarkably, the sea salt battery is made from minerals, carbon species and sea salt.

“Salt is a by-product of wastewater treatment. He is fully charge and discharge and is fully recyclable.

According to him, the battery is more environmentally friendly than lead acid batteries (lead is scarce) and lithium-ion (Li-ion) batteries, which we know from the electric cars, smartphones and laptops.

7000 cycles

The salt battery has an energy density of around 30 watt-hours / kg and can run as many as 7000 cycles, according to Dr. Ten. By comparison, a Li-ion battery has a higher energy density, but the lifetime is on average 1200 cycles!

The US Aquion Energy has also developed a cheaper salt battery and raised over $ 100 million in venture capital. Investors include Bill Gates and Kleiner Perkins.
Japan is developing a molten salt battery for cars

Storing renewable energy

By 2020, the salt battery will store energy at 500,000 households in the Netherlands. During the first year, it is a volume of at least 50 kilowatt-hours, which is enough for about 200 solar panels.

Within a maximum of three years, the pilot production should grow to 5000 kWh. Production will take place in the Netherlands with basic treatment to raw material suppliers.

In mass production, our battery is expected to cost 100 euros per kilowatt-hour costs in terms of factory price. We tested the battery and it achieves at least 7000 cycles. That means households will store 7000 days (20 years), solar power with this battery.

The costs will be one or two cents more per kWh per household. So for a few extra bucks a month you will have a battery at home.”


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