Researchers in Sweden have announced a significant breakthrough in the creation of a zinc-lignin battery with a record lifespan. The findings were published in the scientific journal Energy & Environmental Materials.
The prototype battery is made from zinc and lignin, two readily available and environmentally friendly materials. These batteries have a density comparable to lead-acid batteries but are non-toxic. Additionally, the new device demonstrates high stability, capable of 8,000 charge cycles while retaining over 80% of its capacity.
Researchers note that while lithium-ion batteries are useful when handled correctly, they can be explosive, difficult to recycle, and problematic for the environment.
The zinc-lignin batteries are expected to be significantly cheaper to produce, which is particularly important for developing countries.
According to the scientists, in many third-world countries located near the equator, the sun sets around six in the evening, causing solar panels to stop generating energy. In such conditions, eco-friendly and affordable batteries could be extremely beneficial.
Both zinc and lignin are very inexpensive, and the new batteries are easy to recycle. The prototype is compact, and the researchers aim to develop full-sized batteries for solar panels in the future.
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