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HPQ Silicon Inc V.HPQ

Alternate Symbol(s):  HPQFF

HPQ Silicon Inc. (HPQ) is a Canada-based technology company specializing in green engineering of silica and silicon-based materials. The Company is engaged in developing, with the support of technology partners PyroGenesis Canada Inc. (PyroGenesis) and Novacium SAS, new green processes to make the critical materials needed to reach net zero emissions. Its activities are centered around the three pillars: becoming a green low-cost (Capex and Opex) manufacturer of Fumed Silica using the Fumed Silica Reactor, a proprietary technology owned by HPQ being developed for HPQ by PyroGenesis; becoming a producer of silicon-based anode materials for battery applications with the assistance of Novacium SAS, and Novacium SAS is engaged in developing a low carbon, chemical base on demand and high-pressure autonomous hydrogen production system. The Company operates in a single operating segment, segment, being the sector of the transformation of quartz into silicon materials and derivative products.


TSXV:HPQ - Post by User

Post by Breizh01on Jan 17, 2024 10:56am
243 Views
Post# 35831202

Extract from Harvard papers on battery

Extract from Harvard papers on battery This is an extract you may find encouraging...

Extract from Harvard school of engineering paper
Jan 17, 2024
Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a new lithium metal battery that can be charged and discharged at least 6,000 times — more than any other pouch battery cell — and can be recharged in a matter of minutes.
.....
In 2021, Li and his team offered one way to deal with dendrites by designing a multilayer battery that sandwiched different materials of varying stabilities between the anode and cathode. This multilayer, multi-material design prevented the penetration of lithium dendrites not by stopping them altogether, but rather by controlling and containing them.
.....
In this new research, Li and his team stop dendrites from forming by using micron-sized silicon particles in the anode to constrict the lithiation reaction and facilitate homogeneous plating of a thick layer of lithium metal.

In this design, when lithium ions move from the cathode to the anode during charging, the lithiation reaction is constricted at the shallow surface and the ions attach to the surface of the silicon particle but don’t penetrate further. This is markedly different from the chemistry of liquid lithium ion batteries in which the lithium ions penetrate through deep lithiation reaction and ultimately destroy silicon particles in the anode.

But, in a solid state battery, the ions on the surface of the silicon are constricted and undergo the dynamic process of lithiation to form lithium metal plating around the core of silicon.   

“In our design, lithium metal gets wrapped around the silicon particle, like a hard chocolate shell around a hazelnut core in a chocolate truffle,” said Li.


GLTA

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