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Tokyo Metropolitan University

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Cobalt-Free Battery for Cleaner, Greener Power

A team of researchers, including those from the University of Tokyo, has unveiled a promising alternative to cobalt in lithium-ion batteries (LIBs), addressing some of the current drawbacks associated with these widely used energy storage devices. Cobalt, a key element in LIB electrodes, is a rare resource primarily sourced from the Democratic Republic of Congo, raising environmental, ethical, and supply chain concerns. The team's solution involves creating new LIB electrodes and electrolytes that not only eliminate the need for cobalt but also offer superior performance. These cobalt-free LIBs exhibit approximately 60% higher energy density, potentially extending battery life, and can deliver 4.4 volts, surpassing the typical 3.2-3.7 volts of standard LIBs. Furthermore, test batteries using this novel chemistry demonstrated impressive durability, enduring over 1,000 recharge cycles while losing just around 20% of their storage capacity.
The researchers' breakthrough goes beyond LIBs, with potential applications in various electrochemical processes and devices, including different battery types, water splitting for hydrogen production, ore smelting, and electro-coating. While the development shows promising results, further refinements are needed to enhance safety and longevity, especially for applications requiring extreme durability and lifespan. This innovative approach not only addresses technical challenges in battery chemistry but also has broader implications for environmental, economic, and social factors associated with the use of rare and ethically problematic materials like cobalt in energy storage technology.

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23 more agrees trigger contact with the recipient

  • Rashid Kamau

    33 w

    Great green project.

    • Grace Njeri

      29 w

      @rashid_kamau It's a great one indeed.

    • Esther Wanjiku

      33 w

      Amazing technology everyday that supports going green

      • winnie nguru

        33 w

        All the perks!

        • Kevin

          33 w

          This is a brilliant innovation that also offers higher performance

          • CHRIS NGATIA

            33 w

            Great green project

            • Raymond Ford

              33 w

              Toyota is already manufacturing solid state Lithium/sulfur batteries .. these will be used in their next generation EV's

            • mercy nduta

              33 w

              A promising green project.

              • Elizabeth Gathigia

                33 w

                It's a great initiative ,that leads to a more greener and sustainable environment

                • Gorffly mokua

                  33 w

                  This innovation holds a promise for reducing environmental impact & promoting a greener & sustainable future.

                  • Peter Kamau

                    33 w

                    This is an amazing green project

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