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lithium-sulfur

Researchers increase performance capabilities of lithium-sulfur cathode by 50%

Thu, 10/10/2019 - 15:37 -- Paul Crompton

Scientists from Singapore-based NanoBio Lab (NBL) have developed a means of making lithium-sulfur cathodes that increase specific energy and curbs capacity fade. 

The team began by building the carbon host before adding the sulfur source to obtain a 3D interconnected porous nanomaterial.

Image (from left) The NBL research team: Dr. Ayman Abdel Hamid, Jian Liang Cheong and professor Jackie Y. Ying

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Oxis Energy sealing battery R&D partnership with Ceetak

Mon, 02/11/2019 - 00:00 -- John Shepherd

Lithium-sulfur cells maker Oxis Energy has teamed up with heat-sealing technology firm Ceetak for an R&D project under the UK’s Faraday Battery Challenge.

Oxis is leading the £7 million (US$9.1m) Lithium Sulfur Future Automotive (LiSFAB) development project— funded by Innovate UK— to develop a next generation battery cell and module that will have “the significantly improved power and cycle life required by larger automotive applications”.

Ceetak said it is working with Oxis on developing “a specific test station to evaluate the different technologies to achieve the most robust and suitable pouch sealing process” for future battery cell production.

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Prototype battery breaks bottleneck in lithium-sulphur progress

Thu, 11/24/2016 - 12:55 -- Xuan Zhong

Scientists in the UK have developed a prototype lithium-sulfur battery after being inspired by the cells in the human intestine.

Researchers from the University of Cambridge claim to have found a way to prevent the dissolution and diffusion of polysulfide in liquid organic electrolytes — a key issue when looking to commercially develop lithium-sulfur batteries.

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UK firm’s lithium-sulfur cell doubles average lithium-ion equivalent

Thu, 10/13/2016 - 10:12 -- Paul Crompton

UK lithium-sulfur firm Oxis Energy has reported its development cell has reached double the specific capacity of an average lithium-ion battery.

Internal tests show the cell reaches 400Wh/kg following three years of work by OXIS scientific team's work on increasing gravimetric energy density of its new ultra-light cell chemistry.

The development was made through a high capacity cathode active material coupled with a newly developed electrolyte formation.

The company’s cells had previously achieved 325Wh/kg in 2015 through its developments on the Innovate UK funded REVB project.

However, it could be two years before these new cells are market ready or being used at an industrial level.

An Oxis spokesman told BEST: “The testing and validation stage for any new battery product entering the market is a lengthy process as the performance and safety must be assessed to international standards by an approval third party testing organization.”

OXIS advanced the energy density through the creation of new lithium-sulfur material formulations, which it integrated along with improving the cell design and production processes.

This was due to a Joint Development Agreement with French chemical corporations company Arkema material, which was present in the iteration of cell design.

A company spokesman said: “The cells are being tested internally at the moment, but will be produced for our partners in the automotive, space and defence sectors in the coming months once internal validation has been completed.

“The collaboration focused on maximising the gravimetric energy through the use of a new high capacity cathode active material coupled with a newly developed electrolyte formation.”

Huw Hampson-Jones, CEO of OXIS said: "Cells are already being deployed for testing for vehicle demonstration and development. Subject to continuing scientific progress, the significance of 400Wh-kg means that the ability to eliminate distance anxiety for consumers will become a reality as well as the eventual replacement of fossilized fuel vehicles."

 

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Oxis’ Li-S battery at heart of home BESS

Mon, 06/08/2015 - 12:25 -- Paul Crompton
Oxis’ Li-S battery at heart of home BESS

At a time when home energy storage systems are popping onto the market every other day – a UK based firm has launched a product that stands out from the rest.

Oxis Energy’s 3kWh lithium-sulfur battery is at the heart of the latest battery energy storage system (BESS) for the residential market -  Project Helios.

Made of 150 10ah cells, the battery can be used with PV panels, and through an invertor, store energy at a rated capacity of 3,000W.

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NOHM grant to develop out of this world Li-S batteries

Fri, 05/29/2015 - 11:10 -- Paul Crompton
NOHM grant to develop out of this world Li-S batteries

US-based battery developer NOHMs Technologies has received a $750,000 grant from NASA to develop lithium-sulfur batteries for space exploration.

It comes during the second phase of NASA’s Small Business Innovation Research (SBIR) programme, which funds research and development of technologies fulfilling Nasa’s needs.

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NASA funds “game changer” energy storage projects

Wed, 08/13/2014 - 11:43 -- Laura Varriale
NASA flywheel

NASA has selected four energy storage proposals that may be used to power future space missions.

The four project proposals aim to develop power-generating and storage systems that are reliable and able to work under hostile conditions in space.

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