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carbon

Lead batteries best on environmental footprint

Mon, 01/29/2018 - 10:54 -- News Editor
Lead batteries best on environmental footprint

The use of lead batteries in advanced hybrid and electric vehicles is likely to contribute significantly to carbon foot print reduction, according to Alistair Davidson of the International Lead Association (ILA).

Speaking at the Advanced Automotive Battery Conference in Mainz Germany this week, Dr Davidson, director of products and sustainability at ILA, explained that life cycle assessment of the use of lead batteries gave a doubled benefit to the environment in terms of 99% collection and recycling rate, coupled with reduced emissions from automobiles from technologies such as start-stop and micro-hybrid applications.

 

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Single-wall nanotubes prove a breakthrough in lead-acid batteries

Tue, 05/31/2016 - 14:00 -- Paul Crompton
Single-wall nanotubes prove a breakthrough in lead-acid batteries

Single-wall carbon nanotubes (SWCNT) that can quadruple the cycle life of lead-acid batteries were showcased at the world’s largest battery show in China last week.

The Tuball™ nanotubes additive have also been shown to double capacity at high discharge rates and have an increase of capacity of 30%, claims the material’s producer, Israel-based OCSiAl.

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Stanford team reveals carbon-coated lithium anode

Wed, 07/30/2014 - 10:37 -- Laura Varriale
carbon for a battery anode

Researchers at Stanford University have created a carbon-coated lithium anode, which has performed 150 charge/discharge cycles without forming dendritic spines at 99% Columbic efficiency.

The team placed layers of amorphous carbon to form a protective coat around the lithium anode, thus allowing it to expand and contract without causing dendritic growth at the electrolyte-electrode interface, claimed the Stanford team in a research paper published in Nature Nanotechnology.

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German materials firm Heraeus launches conductive porous carbon powders for lithium-ion battery electrodes

Mon, 09/23/2013 - 10:49 -- Editor

German materials engineering firm Heraeus has launched Porocarb, a family of conductive porous carbon powder to improve ionic conductivity in electrodes for lithium-ion batteries.

A team of developers from the new product group led by Christian Neumann spent more than three years developing these novel carbon particles with pore-size distribution ranging from 10 and 1,000 nanometers and internal pore volumes up to 2.5 cubic centimetres per gramme.

"The pore size gap between carbon felts in the low micrometer range and mesoporous carbons with pore sizes is lower than 50 nanometers, thus opening up new areas of application," said Neumann.

“Porocarb could be used as an additive to improve the performance of lithium-ion batteries as well as a catalyst support for fuel-cells. This new product makes it possible to increase the capacity of lithium-ion batteries in smart phones without increasing the size of the battery or to make the battery even smaller without affecting capacity."

When Porocarb powder is added to electrode slurries, high-porosity areas remain after the electrode compression. This leads to more effective ion kinetics while keeping the overall electrode density high, making it possible to double the thickness of the electrode layer without lowering performance, says Neumann.

Porocarb is based on Heraeus’ experience of manufacturing synthetic fused silica. Carbonaceous precursors are deposited on all porous inner surfaces of the silica template, which is separated chemically from the self-similar carbon framework that has developed.

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