According to Reza Shahbazian-Yassar, associate professor of mechanical engineeringCengineering mechanics at Michigan Technological University, sodium may be a good alternative to rare and expensive lithium for use in batteries.

Using a transmission electron microscope, Shahbazian-Yassar and his team can peer inside and see how a battery is charging and discharging at the atomic level. We will study these fundamental reactions and find out what materials and electrodes will do a better job hosting the sodium.

Sodium ion batteries would not have to be as good as lithium ion batteries to be competitive, Shahbazian-Yassar notes. They would just need to be good enough to satisfy the consumer. And they could make electric cars more affordable, and thus more attractive. Plus, they could reduce our dependence on fossil fuels, particularly if the batteries were charged using renewable energy sources.
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Reza Shahbazian-Yassar with students in his laboratory.
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How feasible is this idea in your opinion?
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