Although the material in a battery electrode may look uniform to the naked eye, at the atomic level, it’s a diverse landscape. Tiny variations in materials can affect reaction rates, and thus battery performance, in complex ways. Professor Jiangyu Li and his colleagues at the University of Washington have built a new tool that could… Read more »
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Wolfspeed introduces all-SiC half-bridge power module and gate driver combination
Wolfspeed, a Cree company, has introduced a fully-qualified all-SiC commercial power module. The 62 mm module is designed to offer high efficiency and power density for high-current power electronics such as converters/inverters, motor drives and other EV components. According to Wolfspeed, the new module achieves efficiency of over 98%, allowing system designers to realize systems… Read more »
From racing cars to street sweepers: Williams collaborates with Wille on electric platforms
Williams Advanced Engineering is famous for its high-performance powertrains – it’s involved in building the Jaguar C-X75 hybrid supercar and an Aston Martin electric concept, as well as supplying batteries for the Formula E electric racing series. The company’s expertise about combining energy efficiency and performance can be applied to more prosaic vehicles as well…. Read more »
New study identifies one culprit behind Li-sulfur battery capacity fade
Lithium-sulfur batteries theoretically offer high energy density, and are widely seen as a promising next-generation energy storage system. However – you guessed it – they have several drawbacks. Among other issues, capacity tends to fade quickly. Researchers at the DOE’s Pacific Northwest National Laboratory (PNNL) have identified one of the reasons behind this problem, and found… Read more »
Graphene cages could be the key to silicon anodes
Battery boffins are buzzing about silicon anodes, which could store up to 10 times more energy than today’s anodes. The catch is that silicon particles tend to swell and crack during cycling, and to react with the electrolyte in unwanted ways. Now a team from Stanford University and the Department of Energy’s SLAC National Accelerator… Read more »
Motorola invests in magnesium-ion battery startup Pellion
Motorola Solutions has invested an unspecified amount in Pellion Technologies, a startup that was founded by a team of MIT researchers. Pellion is focused on commercializing magnesium-ion battery technology. Because magnesium is divalent, it can displace double the charge per ion that lithium can, and the element is more abundant and more stable. Magnesium-ion batteries… Read more »
A possible key to Li-sulfur batteries: highly crumpled nitrogen-doped graphene sheets
Researchers at Pennsylvania State University have developed a promising new technique that may be able to overcome some of the challenges inherent to lithium-sulfur batteries. In “Advanced Sulfur Cathode Enabled by Highly Crumpled Nitrogen-Doped Graphene Sheets for High-Energy-Density Lithium-Sulfur Batteries,” published in Nano Letters, Jiangxuan Song and colleagues explain how they synthesized highly crumpled nitrogen-doped… Read more »
Q&A with Tesla’s lead motor engineer (Full Interview)
The principal motor engineer at Tesla describes why modeling and optimization is so vital to its design process. Creating a start-of-the-art electric vehicle requires a deep understanding of all the components. More importantly, it requires a continual process of analysis and optimization of the components to push the limits of driving range, efficiency, performance and… Read more »
James Bond’s Jag may become production EV
No one expects Jaguar’s first EV to be a practical hatchback – on the contrary, it may be a futuristic super-sportscar to rival the likes of the Tesla Model S and BMW i8. The South Africa news outlet Independent Online reports that unnamed insiders are talking about putting the Jaguar C-X75 prototype featured in the… Read more »
Hitachi researchers demonstrate thermally durable solid-state Li-ion battery
A research team sponsored by Hitachi and Tohoku University’s Advanced Institute for Material Research (AIMR) has demonstrated technology that reduces the internal resistance of all-solid-state Li-ion batteries through the use of LiBH4-based complex hydrides as solid electrolytes. A conventional Li-ion battery uses a volatile organic electrolyte solution with a maximum operating temperature around 60˚ C…. Read more »