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21 Aug 14. The next generation battery technology company, OXIS Energy Ltd, has delivered the third phase of a research programme to improve its Lithium Sulfur cells for Lincad Ltd and the UK MOD. The project is part of a wider Dstl (Defence Science and Technology Laboratory) research programme. In Phase 3 OXIS has developed an advanced prototype cell and pioneering chemistry that provides a 60% increase in capacity over that delivered in Phase 2 in 2013 increasing the specific energy of a cell to just under 300 Wh/kg. Over the coming months, it expects to achieve a further 20% increase in capacity using enhanced materials in the OXIS cells. Lightening the load on army patrol personnel who have to carry several kilos on their person is a priority for the MOD. Lithium Sulfur cells have the potential to significantly reduce the weight of batteries that are currently in service, thus reducing the weight burden on soldiers significantly. Another major facet in OXIS’s development of Lithium Sulfur cells is the impressive safety levels they demonstrate. The cells can easily handle a wide variety of abuse conditions including extreme temperatures, short circuit, nail and even bullet penetration. Even when the cells are penetrated by metal nails, the cells continue to function, thus contributing further towards safeguarding the lives of British soldiers on operational duty. OXIS’s Lithium Sulfur cells are also kinder to the environment as they do not contain any heavy metals or toxic components and the sulfur used is a recycled product. The cells have a long shelf life and do not require charging during prolonged periods of storage. This will reduce the annual operational costs for the MOD. OXIS Energy’s Chief Executive Officer, Huw Hampson-Jones said, “The OXIS team has made considerable progress in developing the cell technology for use in mobile military communications systems. Phase 3 takes us a step closer towards rolling out the safe battery systems for use by our military personnel on active duty. The next stage is to make further improvements, so that the Ministry of Defence can phase in the technology and achieve significant costs savings, but more importantly, do so by safeguarding our soldiers.” (Source: Yahoo!/PRNewswire)
20 Aug 14. New “Dual Carbon” Battery Charges 20 Times Faster than Li-ion. Japanese company Power Japan Plus has announced the development and planned mass-production of “Ryden,” a disruptive carbon battery that can be charged 20 times faster than an ordinary lithium-ion cell. The battery, which is cheap to manufacture, safe, and environmentally friendly, could be ideal to improve the range and charging times of electric cars. We’ve seen electric cars and motorbikes make huge strides forward in recent years. Up to a few years ago, electric vehicles were a synonym of peculiar designs, poor performance, and very low range; but now, more and more people associate them with instant torque and high performance. Further improving range, charging time, and cost would make electric vehicles an even more compelling product. A new battery developed by Power Japan and Kyushu University promises that – and more. The researchers describe their battery as “dual carbon” since both electrodes are made out of carbon. They claim that their design not only has high energy density, but is also economical, very safe, reliable, and environmentally sustainable. Most importantly, it can charge 20x faster than its Li-ion counterpart. According to the company, their technology would allow you to charge the battery of a Nissan Leaf in 12 minutes instead of four hours. Because that battery has a capacity of 24 kWh, a back-of-the-envelope extrapolation would give us a charging time of 42 minutes for the 85 kWh battery of a top of the line Tesla Model S.
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