Its upcoming all-electric flagship SUV EX90 will support both V2G and V2H applications, so car owners will be able to decide whether to keep their electricity to power their homes or send it back to grid. Volvo has unveiled it first electric vehicle with bidirectional charging. Earlier this year, GM’s first joint venture battery plant with LG Energy for Ultium Cells began production in Ohio, with two additional US plants now under construction and a fourth in the planning stage. GM will scale its Ultium EV Platform to 1 million units of annual EV production capacity in North America by 2025. “GM designed Ultium to be a supremely flexible platform so we can continuously improve our cells as battery technology advances,” said Kent Helfrich, GM CTO, vice president of GM R&D. “Being able to add larger amounts of silicon – efficiently – is the essential breakthrough needed to produce competitive EVs that meet market demand for high-performance, affordable vehicles.” Under a licensing business model, GM will tap OneD’s 15-year, 240-patent track record, with a focus on increasing energy density and reducing the cost of future GM EV batteries. “This limited the amount used to extremely small percentages and only modest performance improvements,” OneD said. Silicon can store 10 times more energy than graphite but most attempts to include more silicon in the anode faced challenges of silicon expansion and breakage. The focus of the collaboration is OneD’s SINANODE platform, which adds more silicon onto the anode battery cells by fusing silicon nanowires into EV-grade graphite.
#RAW POWER CHARGER SERIES#
GM Ventures and Volta Energy Technologies also participated in OneD's Series C funding round, which the company recently closed at $25 million. General Motors and EV battery developer OneD Battery Sciences have signed a joint R&D agreement focused for the potential use of OneD’s silicon nanotechnology in GM’s Ultium battery cells. Its exceptional capacity and fast-charging rate, combined with a scalable synthesis method, make it an attractive candidate for future battery materials,” said Tao. “This material operates at a higher voltage than graphite and is not prone to forming what is called a ‘passivation solid electrolyte layer’ that slows down the lithium-ion movement during charging. The Department of Energy's extreme fast-charging goal for EVs is set at 15 minutes or less to compete with refuel times on gas-powered vehicles – a milestone that has not been met with graphite. We are looking for new, low-cost materials that can outperform graphite,” said ORNL postdoctoral researcher Runming Tao. “Because of this sluggish lithium-ion movement, graphite anodes are seen as a roadblock to extreme fast charging. This buildup slows the movement of lithium ions and can limit battery stability and performance. They focused on a problem that graphite anodes encounter during the charging process, when the electrolyte decomposes and forms a buildup on the anode. The researchers said in a recent paper in Advanced Energy Materials that a novel compound of molybdenum-tungsten-niobate (MWNO) with fast rechargeability and high efficiency could potentially replace graphite in commercial batteries.
The US Department of Energy’s Oak Ridge National Laboratory and the University of Tennessee, Knoxville, have collaborated the development of a novel fast-charging battery anode material via a scalable synthesis method.
The smarter E Europe 2019 special edition.Market overview: Microgrid control systems.Market overview: Large-scale storage systems.
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