Build a saltwater battery

Clean Power

© Lead Image © Nelli Valova,

© Lead Image © Nelli Valova,

Article from Issue 252/2021

Rechargeable lithium batteries are expensive, and manufacturing them damages the environment. Saltwater batteries offer a cheaper and greener approach to storing energy.

The supply of lithium is finite, mining lithium pollutes the environment, and the batteries are expensive. None of this applies to saltwater batteries. Common household utensils are all you need to build one for yourself.

Energy turnaround and environmental benefits are some of today's central topics. However, it is not just a matter of making energy production more green but of looking at all aspects of the energy industry. It makes no sense to store clean solar power in lithium-ion batteries if producing them causes massive environmental damage. Recycling these batteries is also problematic. For stationary use, the saltwater battery offers a truly ecological alternative.

Everyone is shaped by their knowledge and experiences. When I first heard about storing energy in saltwater batteries, my first thought was: That can't possibly work. What about the electrochemical voltage series and the anode and cathode made of the same material? No, that's really impossible. A simple experimental setup quickly shed light on the matter. Spoiler alert: It worked!


Use Express-Checkout link below to read the full article (PDF).

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • ACPI Tools

    Linux offers some useful command-line tools that leverage the ACPI power management framework to display detailed data on the status of a laptop battery.

  • AcpiTool and PowerTOP

    AcpiTool and PowerTOP ensure a sustainable battery lifetime and guarantee low energy consumption of laptops running Linux by identifying power hogs and maintaining the battery.

  • Rasp Pi Fox Trap

    As a countermeasure to predators of rare ground-breeding birds, live traps are monitored by a microcontroller and a Raspberry Pi.

  • Perl: Google Chart Instructions

    A CPAN module passes drawing instructions in object-oriented Perl to Google Chart, which draws visually attractive diagrams.

  • Electronic Weighing

    Create your own weighing device with easily available components and open source software.

comments powered by Disqus

Direct Download

Read full article as PDF:

Price $2.95