Cobalt substitute discovered for batteries.

SGGP 25/10/2023 05:32

Researchers at the University of Tokyo, Japan, have invented a superior battery that does not contain cobalt like lithium-ion batteries, offering better performance and lifespan, with various potential applications.

Simulation of a new battery invented by the University of Tokyo.

Professor Atsuo Yamada said the new alternative to cobalt involves combining elements in the electrode, including lithium, nickel, manganese, silicon, and oxygen, all of which are more common and less problematic than cobalt.

The new electrodes and electrolytes created by the research team not only lack cobalt but also actually improve the chemical properties of existing batteries. The new battery boasts approximately 60% higher energy density, longer lifespan, and can deliver a voltage of 4.4 volts, higher than the 3.2-3.7 volts of conventional batteries.

One of the biggest surprises was the improved recharge characteristics. The test battery with the new chemistry could fully charge and discharge for over 1,000 cycles (equivalent to 3 years of full charge and use), while losing only about 20% of its storage capacity (only a 20% reduction in lifespan).

Source: https://www.sggp.org.vn/phat-hien-chat-thay-the-cobalt-trong-pin-post711215.html