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Uppsala U team identifies main performance bottlenecks in Li-sulfur battery performance

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Lithium-sulfur batteries are prospects for future batteries as they are made from cheaper and more environmentally friendly materials than lithium-ion batteries. They also have higher energy storage capacity and work well at much lower temperatures. However, they suffer from short lifetimes and energy loss.

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Stanford team develops new ultrahigh surface area 3D porous graphitic carbon material for improved energy storage

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Stanford University scientists have created a new ultrahigh surface area three-dimensional porous graphitic carbon material that significantly boosts the performance of energy-storage technologies. Previously reported sulfur electrodes often had areal capacity of below 3 mAh g −1 and cycling lifetime of less than 200 cycles.

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Fraunhofer holding 3rd annual workshop on Li-sulfur batteries in November

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Fraunhofer IWS in Dresden, Germany will hold its 3rd annual workshop on Lithium-sulfur batteries from 12-13 November 2014. As with the prior Lithium-Sulfur Battery Workshops in 2012 and 2013, this year’s symposium will bring together an international audience of scientists and industrial customers.

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Researchers show simple addition of quartz powder to Li-S electrolyte slows capacity loss

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Materials researchers of the Paul Scherrer Institute PSI in Switzerland have, in collaboration with the Université Grenoble Alpes (France), developed a simple method that can improve the performance of lithium-sulfur batteries by 25-30%. For example, the lithium-sulfur battery rapidly loses capacity with repeated charging.

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Ricardo develops new model-based EV battery control technology; evaluating new cell chemistries

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One of the most significant impediments to an increased market share for plug-in vehicles is the high cost of rechargeable energy storage. The new cell and BMS are intended to achieve 400Wh/kg cell energy density with practical cycle life and performance metrics. This project was led by OXIS and part-funded by Innovate UK.

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RIKEN team develops high-performance lithium-iodine battery system with higher energy density than conventional Li-ion

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A team from Japan’s RIKEN, led by Hye Ryung Byon, has developed a lithium-iodine (Li-I 2 ) battery system with a significantly higher energy density than conventional lithium-ion batteries. The high solubility of triiodide/iodide redox couples results in an energy density of ~ 0.33?kWh?kg Zhao et al. Click to enlarge.

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Sulfur–TiO2 yolk-shell cathode for Li-sulfur battery shows best long-cycle performance so far

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(b) Capacity retention of sulfur–TiO 2 yolk–shell nanostructures cycled at 0.5 C, in comparison with bare sulfur and sulfur–TiO 2 core–shell nanoparticles. The authors say that, to the best of their knowledge, this is the first time that a lithiumsulfur battery with this level of performance has been described.