Battery materials, including heavy metals such as nickel and cobalt, pose a
threat to the environment and people. Especially cobalt, a common mineral in
central Africa, has sparked controversy due to people's negligence and
exploitation during the mining process. Just a few days ago, international human
rights organizations have filed lawsuits against Apple, Alphabet, Dell,
Microsoft, and Tesla, accusing them of using child labor and other forms of
abuse in cobalt mines in the Democratic Republic of Congo.
IBM advocates for "cobalt free" batteries, so what are the differences in
its energy storage solutions?
Firstly, it does not contain cobalt or nickel.
This scheme adopts three new and different patent materials. The IBM
research team has also discovered a new battery chemical composition that can be
extracted from seawater without using heavy metals or other substances related
to heavy metal sources. This technology is less invasive than current material
extraction methods.
IBM is passionate about the prospects of their battery development,
believing that the performance of this new battery is as excellent as the
materials used. In testing, it outperformed lithium-ion batteries in many single
categories, including lower costs, faster charging times, higher power and
energy density.
Now let's talk about dendrites, which are furry nanostructures formed over
a long period of time in lithium-ion batteries. The formation of dendrites
reduces the efficiency of the battery, so researchers have come up with various
methods to eliminate dendrites. In the batteries developed by IBM, the
combination of cobalt and nickel free cathodes and electrolytes suppresses
dendritic growth. In addition to solving efficiency issues, this new type of
battery can also reduce its flammability.
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