Interesting Science and Technology

More efficient than lithium batteries, sodium ion saline batteries

Washington: Smartphones and other devices are currently powered by lithium-ion batteries, but in addition to internal wear and tear and frequent charging, the batteries themselves lose their usefulness over time.

Instead, American experts have tested a battery made of sodium ion, a key component of salt. The first is that sodium is abundant in nature and the second is that its usefulness is much better than that of a lithium-ion battery.

Sodium batteries can also be recharged which shows the usefulness of cycling. Scientists at Washington State University have presented the basic design of this battery. A saline battery works exactly like a lithium ion battery, that is, energy is generated by the ions between the electrodes.
It should be noted that there were many challenges involved in the manufacture of sodium batteries. Inactivated sodium crystals accumulate on the negatively charged cathode and the battery becomes inoperable within a few days. The second problem is that sodium ion batteries could not hold more charge than their lithium batteries.

University of Washington scientist Jin Hua Song has tried to solve this problem. They have designed a sodium ion battery in which the cathode is made of metal oxide, while on the other hand a liquid electrolyte rich in sodium ion has been used.

When tested, the battery worked well and no sodium particles accumulated on its ends. The battery had the same amount of electricity as the lithium ion battery. Even after being charged 1000 times, the battery remained useful with 80% efficiency.

Thus it is the first battery whose cathode is made of a completely different material. In the next step, its design can be further improved.

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