Massachusetts Institute of Technology (MIT) researchers boast that using carbon nanotubes for one of a Li-ion battery’s electrodes results up to tenfold the amount of power compared to a conventional Li-ion battery.
The researchers used a layer-by-layer fabrication method to produce the new electrode material.
In this method a base material is alternately dipped in solutions containing carbon nanotubes that have been treated with simple organic compounds that give them either a positive or negative net charge. When these layers are alternated on a surface, they bond tightly together because of the complementary charges, making a stable and durable film.
In the new battery electrode, carbon nanotubes “self-assemble” into a tightly bound structure.
The researchers report the energy output for a given weight of this new electrode material was shown to be five times greater than for conventional capacitors, and the total power delivery rate was 10x that of Li-ion batteries.
This performance can be attributed to good conduction of ions and electrons in the electrode, and efficient lithium storage on the surface of the nanotubes, say the researchers
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Source: eetindia.co.in
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