What will batteries of the future be made of? Four scientists discuss the options – podcast

Researchers are developing sustainable and alternative battery technologies using abundant materials like soil microbes, sodium, and biodegradable waste to reduce reliance on lithium and decrease environmental impact. These innovations aim to power sensors and energy storage systems more sustainably while addressing scalability and resource limitations.

The episode highlights innovative battery solutions such as Terracel, a microbial fuel cell that generates power using soil microbes, ideal for powering environmental sensors in challenging wet soil environments. Researchers are also advancing sodium-ion batteries made from abundant materials like salt, presenting a promising alternative to lithium-ion batteries with fewer supply and geopolitical risks. Another development includes bio-based biodegradable batteries made from waste streams like coffee grounds, designed to be fully recyclable and repurposed as fertilizer after use. Additionally, advancements in solid-state batteries promise enhanced safety and energy density for electric vehicles. These technologies collectively contribute to reducing electronic waste and dependence on critical minerals, addressing challenges of scalability, material variability, and sustainability in the evolving battery industry.