A secondary battery advance
GS Yuasa International completed initial development of a new advanced lithium secondary battery, which has a “Sulfur – Porous Carbon Composite” positive electrode with 8 times higher capacity than that of a conventional lithium-ion battery. The new battery has positive electrodes and a silicon-based negative electrode with high capacity. The energy density with respect to material amount of both electrodes for the new battery is approximately 3 times higher than that of conventional lithium ion battery. The technology will allow the driving range of electric vehicles to significantly increase. The practical technology development will be preceded by further improvement of durability performance for the silicon-based negative electrodes, with samples to be available by 2020. The extremely high energy density is primarily the result of the new sulfur composite positive electrode. Sulfur is one of the most promising materials for the positive electrode in advanced lithium secondary batteries because of its high theoretical capacity of 1,675 mAh g. However, practical use of the sulfur for the electrode reaction is low because of its insulating nature. As a result, it is difficult to achieve actual capacity as high as the theoretical one. To improve the utilization, currently the standard approach has been attempted using a high conductive porous carbon matrix to support the sulfur component of the electrode. For more information, go to www.gs-yuasa.com/us/topics/pdf/20141117e.pdf
Battery report
Avicenne Energy offers the report The rechargeable battery market 2013 to 2025, which provides statistics on NiCd, NiMH, and Li-ion battery market detailed for 14 applications including smartphones, PCs, tablets, toys, video games, hybrid electric vehicles, e-bikes, security lighting, and more. The report also investigates data on cathodes, anodes, separators, lithium salts, and binders. It looks at suppliers for cathodes, anodes, electrolytes, binders, and separators.
Battery simulation
Maplesoft introduced MapleSim Battery Library, which is an add-on component library to the company’s system-level modeling tool. It allows engineers to incorporate physics-based predictive models of battery cells into their multi-domain models so they can look at battery behavior early in the design process. It helps designers understand how the battery will behave as part of the greater system. For more information, go to http://www.maplesoft.com/products/maplesim/
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