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Carbon company builds graphene anode for lithium-ion batteries

Wed, 02/01/2017 - 11:48 -- Paul Crompton
Carbon company builds graphene anode for lithium-ion batteries

Carbon materials company Saint Jean Carbon has started to design and build a graphene based lithium-ion battery.

Following two years of research, the company has created an anode using a one atom thick layer of single graphite to add conductivity while reducing the amount of carbon used.

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Joint Venture to bring sodium nickel battery to market

Tue, 01/10/2017 - 13:04 -- Paul Crompton
Joint Venture to bring sodium nickel battery to market

Chinese battery maker Chaowei Group has established a Joint Venture (JV) company with General Electric to bring to market a sodium-nickel-chloride battery.

The JV sees Chowei’s subsidiary Chaowei Lvna and US firm GE’s subsidiary General Electric Technology Development (GETD) joining forces to develop the technology.

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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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US battery maker enters fledgling C&I market with ESS

Fri, 07/15/2016 - 11:57 -- Paul Crompton
US battery maker enters fledgling C&I market with ESS

US battery maker SimpliPhi has announced plans to enter the commercial and industrial market with its modular high-voltage, cobalt-free battery.

Because the batteries are modular, the company claims facilities with on-site generation will be able to spread back-up batteries across a number of buildings in the same location, eliminating the need for huge battery banks.

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Baked leaf leads to better sodium batteries

Wed, 03/02/2016 - 14:45 -- Paul Crompton
Baked leaf leads to better sodium batteries

Scientists from the University of Maryland have used an anode made of carbonised oak leaf to boost performance of a sodium battery.

Using the ‘leaf’ anode, scientists found a battery could hold 90% of its charge after 200 cycles and kept its charge efficiency at around 75%. The results were unveiled in a paper published in the journal ACS Applied Materials Interfaces.

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