The new zinc-lignin battery is stable, as it can be used over 8000 cycles while maintaining about 80% of its performance. The barrery developed by the researchers is small but the technology is scalable. Credit: Thor Balkhedin Sweden have developed a battery constructed from zinc and lignin that can be recharged over 8,000 times. This innovation aims to offer an affordable and eco-friendly battery alternative, especially for regions with limited electricity access.
Although zinc-based batteries are already on the market, primarily as non-rechargeable batteries, they are predicted to complement and, in some cases, replace lithium-ion batteries in the long run when the feature of rechargeability is properly introduced.“While lithium-ion batteries are useful when handled correctly, they can be explosive, challenging to recycle, and problematic in terms of environmental and human rights issues when specific elements like cobalt are extracted.
To stabilize the zinc, a substance called potassium polyacrylate-based water-in-polymer salt electrolyte is used. What the researchers at Linköping have now demonstrated is that when WiPSE is used in a battery containing zinc and lignin, stability is very high. Currently, the batteries developed in the lab are small. However, the researchers believe that they can create large batteries, roughly the size of a car battery, thanks to the abundance of both lignin and zinc at low cost. However, mass production would require the involvement of a company.
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