THE BOURSE WHISPERER: Altech Chemicals (ASX: ATC) has registered the product name Silumina AnodesTM for the company’s alumina coated composite silicon/graphite lithium-ion battery anode material.
From test work results, Altech expects its Silumina AnodesTM product to provide for the manufacture of battery anodes, that when incorporated into a lithium-ion battery, will result in a battery with higher energy retention capacity by volume and weight compared to a battery using a graphite only battery anode.
The key differentiation point of Silumina AnodesTM is that it will be a composite material of silicon and graphite particles that have been coated with alumina, using Altech’s proprietary alumina coating technology.
Altech’s laboratory test work demonstrated lithium-ion batteries using an anode comprised of composite graphite and silicon particles coated with alumina, improved battery energy capacity, energy retention, life and performance when compared to using a graphite only anode.
In November 2021, Altech achieved a breakthrough when its R&D team “cracked the silicon barrier”, producing lithium-ion battery anode materials with approx. 30 per cent higher energy retention capacity compared to conventional graphite only lithium-ion battery anode material.
The need to increase lithium-ion battery energy density and reduced cost has been a hurdle the lithium-ion battery industry has long wanted to clear.
Silicon metal has been considered the most promising anode material for the next generation of lithium-ion batteries, but, until now was unable to be used in commercial lithium-ion batteries.
Altech’s potentially game changing technology has demonstrated that silicon particles can be modified to resolve capacity loss caused by swelling and first-cycle-loss capacity.
Phase 2 of Altech’s planned R&D program will see the company strive to improve on the 30 per cent energy increase achieved in the first phase.
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