MIT's new study on disordered rock salt-polyanionic spinel cathodes reveals a major breakthrough in battery technology.
For the past decade, disordered rock salt has been studied as a potential breakthrough cathode material for lithium-ion batteries and a key to creating low-cost, high-energy storage for everything from cell phones to electric vehicles to renewable energy storage.
“Manganese is at least five times less expensive than nickel, and about 30 times less expensive than cobalt,” Li said. They wrote that, given the high cost and relative rarity of materials like cobalt and nickel, efforts to scale up electric storage capacity rapidly likely lead to extreme cost spikes and potentially significant materials shortages.
The high capacity is contributed partially by oxygen redox, which is activated when the cathode is charged to high voltages.
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