Better Batteries From Lawrence Berkeley Lab Research
A research team led by Gao Liu, a senior scientist in the Energy Technologies Area at Lawrence Berkeley Lab, published a paper in the journalrecently in which they report on new technology that could lower the cost of lithium-ion batteries and extend their service life. Here’s the abstract:
Here we show a conductive polymer with simple primary building blocks that can be thermally processed to develop hierarchically ordered structures with well-defined nanocrystalline morphologies. Our approach to constructing permanent HOS in conductive polymers leads to substantial enhancement of charge transport properties and mechanical robustness, which are critical for practical lithium-ion batteries.
“The advance opens up a new approach to developing EV batteries that are more affordable and easy to manufacture,” Liu said. The big news here is that the so-called HOS-PFM coating conducts both electrons and ions at the same time, which ensures battery stability and high charge/discharge rates while enhancing battery life. The coating also shows promise as a battery adhesive that could extend the lifetime of a lithium-ion battery from an average of 10 years to about 15 years, he added.
“Like an atomic expressway, the HOS-PFM strands allow lithium ions to hitch a ride with electrons . These lithium ions and electrons move in synchronicity along the aligned conductive polymer chains.”If you are following so far, read on. To demonstrate HOS-PFM’s superior conductive and adhesive properties, Liu and his team coated aluminum and silicon electrodes with HOS-PFM, and tested their performance in a lithium-ion battery setup.
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