Forum Topics New Battery Technology
CanadianAussie
Added 4 years ago

In Queensland released an article today titled Novonix breakthrough could deliver the EV magic bullet - the 100-year battery

https://inqld.com.au/business/2022/06/01/novonix-breakthrough-could-deliver-the-ev-magic-bullet-the-100-year-battery/

Apparently Dr Jeff Dahn and Tesla's research team released a paper on a nickel-based battery that could last 100 years and still favourably compare to lithium iron phosphate cells.

Dr Jeff Dahn is Novonix's chief scientific officer but aside from this I'm not sure what it really has to do with Novonix. Keep in mind it's only theoretical at this stage and there are concerns around cost with speculation these batteries may be more suited to long-term energy storage than for EVs. And of course media outlets are notoriously horrible at interpreting (sensationalising?) scientific papers. I haven't read the paper myself, nor would I likely understand it, but if it proves achievable it would certainly disrupt the industry and potentially solve the EV battery recycling dilemma.


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Scooter
Added 5 years ago

A spoonful of sugar opens a path to longer lasting lithium sulfur batteries.

Monash/CSIRO - Using a glucose-based additive on the positive electrode they have managed to stabilise lithium-sulfur battery technology, long touted as the basis for the next generation of batteries.

Test-cell prototypes constructed by the team have been shown to have a charge-discharge life of at least 1000 cycles, while still holding far more capacity than equivalent lithium-ion batteries. “So each charge lasts longer, extending the battery’s life,” says first author and PhD student Yingyi Huang. “And manufacturing the batteries doesn’t require exotic, toxic, and expensive materials.”

This technology could lead to vehicles including electric buses and trucks that can travel from Melbourne to Sydney without recharging.

https://www.monash.edu/news/article...th-to-longer-lasting-lithium-sulfur-batteries

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Shapeshifter
Added 5 years ago

I had a read of the original research paper published in Nature Communications and this is what I liked:

  • Nature Communications is a highly regarded peer-reviewed journal
  • The authors use of a saccharide-based binder system mitigates three problems with lithium sulfur batteries (three birds with one stone)
    • provides cathode expansion tolerance
    • reductive effect of glucose reduces the shuttling phenomenon of the polysulfide species
    • nano-structuring provides ion diffusion highways
  • This reduces damage to the lithium anode and therefore prolongs cycle life which has been a big problem for LI-S batteries
  • It also reduces self-discharge which is also an issue for LI-S batteries
  • This is a cost efficient and readily available technological solution to the problem

They cycled their battery 1000 times over a 9 months period which resulted in a drop to 42% capacity retention.

This solution delivers on higher energy density batteries than Lithium Ion with a cycle performance similar to them.

 

 

12
Macca571
Added 5 years ago

Has anyone been watching the development of the Zinc/Bromide battery as featured on the ABC News last night (9/09.2021)??

                       https://www.abc.net.au/news/2021-09-10/storage-battery-will-create-renewable-energy-solution-and-jobs/100448940

Appaerntly the advantages is the ability to get 100% charge/discharge over multiple cycles.

Production trials to begin shortly in Western Sydney ......... might be something to keep an eye on

18
laoshi
Added 5 years ago

See my straw on RFX competitors.

The company is Gelion 

https://gelion.com/

10
Shapeshifter
Added 5 years ago

Interesting Macca571 thanks for that.  Zinc-Bromide could be the answer for high durability applications (where both high cycle length >2000 and temperature durability are important).

 

Personally I've been interested in the new Lithium-Sulphur battery technology being developed by LI-S energy in conjunction with PPK group, Deakin University and BNNT Technology Limited.  This technology has a big advantage of having an energy density of 550 Wh/L which is about 5 times that of current lithium ion technology.  LI-S energy (LIS) is poised to shortly float on the asx.  Their IPO was heavily over subscribed and it appears initial stock allocation has been significantly limited.

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