Illuminated marine bacteria make light sources more sustainable.
Now, a startup in Singapore has developed an environmentally-friendly source of electricity. Its rechargeable battery is fully biodegradable (except for the casing) and made from cellulose and water-based electrolytes, betting on zinc and manganese.
With a similar lifespan to lithium batteries, manufacturing costs per kWh are around 2 times cheaper. But it’s safety where it scores highest. Thanks to its mechanical resilience and used materials, it won’t spark, burn or explode when damaged.
Operating temperatures are -20°C to +80°C. It’s suitable for laptops and smartphones, as well as in sensors and medical devices.
Others have designed wireless security tags solely made from paper, while in Holland plants are helping generate electricity.
