As demand for lithium soars and supply tightens, researchers are turning to alternative battery chemistries to support the energy transition.

A new review published in Science and Technology of Advanced Materials highlights potassium-ion batteries as a leading contender, offering potentially higher energy density than sodium-ion batteries and greater sustainability than lithium-ion alternatives.

Led by Professor Eunho Lim of Dongguk University, South Korea, the study outlines the scientific progress and remaining hurdles in potassium-ion battery development.

“Potassium-ion batteries are emerging as a viable alternative due to the abundance and cost-effectiveness of potassium.

“But realising their potential requires the development of advanced anode materials tailored to the unique properties of potassium ions,” says Prof Lim.

While lithium-ion batteries have powered everything from smartphones to electric vehicles, lithium’s scarcity and high cost raise concerns for future scalability.

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