Oxis Energy Lithium Sulfur Batteries

Game changing battery technology at Oceanology International 2014
Showcasing the next generation of lithium battery solutions...

Visit us on Stand R100, Oceanology International '14, ExCeL, London, UK - 11th - 13th March 2014
Call +44 (0)1527 512400 or Email sales@steatite-batteries.co.uk to arrange a meeting at the show!

Why Lithium Sulfur from Oxis Energy?

Lithium ion is reaching its maturity and predictions are that further performance improvements will be small due to the limitations of the chemistry. By contrast, Lithium Sulfur (Li-S) has the potential to surpass other lithium ion chemistries by being able to store a higher capacity without any safety issues. Lithium-Sulfur cells are lighter, safer and maintenance-free. The cells can be discharged to 100% which is a significant advancement on available battery solutions.

It was thought that the availability of such technology was many years’ away, yet innovative technology companies such as OXIS Energy are proving that the chemistry is far nearer than anticipated. OXIS Energy's successfully developed and patented new chemistries will be commercially available by early 2014, GP batteries of Singapore will be the first large-scale manufacturer to produce Lithium Sulfur cells.

The technological and commercial advantages of Lithium Sulfur cells will favour specific markets where energy storage, lightweight and portability are major factors in the selection of the battery chemistry. Applications such as portable equipment for the Defence market, electric vehicles and solar energy storage are already using OXIS Energy cells.

Steatite is proud of being a new contractual partner with Oxis Energy, by participating in the continuous development of Lithium Sulfur technology. We will consequently provide our customers an improved battery solution containing cells with an unprecedented level of performance.

Lightweight

Li-S LightweightBattery systems using metallic Lithium are known to offer the highest specific energy.

Sulfur represents a natural cathode partner for metallic Li and, in contrast with conventional lithium-ion cells, the chemicals processes include dissolution from the anode surface during discharge and reverse lithium plating to the anode while charging. As a consequence, Lithium-Sulfur allows for a theoretical specific energy in excess of 2700Wh/kg, which is nearly 5 times higher than that of Li-ion.

OXIS’s next generation lithium technology platform offers the highest energy density among lithium chemistry:

  • 350 Wh/kg demonstrated at effective material level in test cells in 2013
  • 200 Wh/kg achieved at cell level in 2013 
  • 400 Wh/kg achievable in the next three years

Safety

Li-S SafetyOXIS patented chemistry provides inherent safety allowing it to meet international standards concerning shock, crush, thermal stability and short circuit (UN38.3, IEC62133). Thanks to its two key mechanisms, a ceramic lithium sulfide passivation layer and a non-flammable electrolyte, our cells can withstand extreme abuse situations such as bullet and nail penetrations with no adverse reaction.

Cycle life

Li-S Cycle LifeOXIS Li-S cells have achieved an excellent cycle life: cells can be cycled over 750 times with only a 4% loss compared to Beginning-of-Life (BoL) capacity. We therefore expect our cells to reach around 2000 cycles before the capacity reduces to 80% BoL.

Full discharge

Li-S DischargeOXIS cells have a 100% available Depth-of-Discharge and cannot be damaged by over-discharge. This compares with Li-ion batteries which are only used across 80% (or less) of their available discharge range, and are damaged by over-discharge. OXIS cells do not have this problem, so all the energy can be used.

Maintenance free

Li-S MaintenanceOXIS cells have an indefinite shelf-life, with no charging required when left for extended period. Li-ion batteries require recharge every 3-6 months to prevent failure and often causes significant warranty issues.

Eco friendly

Li-S EcoThe OXIS Li-S chemistry is considered to have less environmental impact when compared to other technologies such as Li-ion. The Li-S cell utilises sulfur in place of heavy metals such as nickel and cobalt, which have a significant environmental impact whereas the sulfur used in OXIS manufacture is a recycled material, a by-product of the oil industry.

 

 

 

Speak to us about your battery needs

To find out how Steatite Batteries can assist you with your battery needs, call our specialist team on: 01527 512400 or get in touch using our online enquiry form.

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