Elon Musk and JB Straubel covered a lot of ground in a nearly-three-hour performance at Tesla’s 2016 annual shareholder meeting. They recapped the history of the company, explained why Supercharging will not be free for Model 3 buyers, and discussed their plans to remake the auto production process. They also made some very interesting remarks… Read more »
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Stanford team develops Li-metal anodes
Lithium-metal anodes are the favored solution for next-generation Li-air or Li-sulfur batteries for various reasons, including their high specific capacity (theoretically tenfold higher than graphite). However, safety issues resulting from dendrite formation and instability caused by volume expansion have slowed the development of commercially viable solutions. In “Composite lithium metal anode by melt infusion of… Read more »
A closer look at electrolytes in advanced batteries
The electrolytes in advanced batteries are based on incredibly complicated formulations. If you calculated all of the possible combinations of solvents, salts and additives while trying to find the optimal ratios for just one electrolyte formulation, it would add up to an extraordinary number of possibilities. Because it plays such a critical role in battery… Read more »
Bee pollen forms carbon microstructures for Li-ion anodes
Much research in the battery world focuses on finding a replacement for graphite as an anode material. One candidate is hard carbon, which can be formed in various morphologies to deliver the desired properties. But in fact, there are already millions of tiny factories around the world, cranking out as many carbon particles as could… Read more »
Paraclete Energy says its low-cost silicon nanoparticles can at least double your current anode capacity
Silicon has a theoretical charge capacity ten times higher than typical graphite. That is why a mind-blowing number of researchers are working towards replacing more and more of the graphite used in today’s lithium-ion battery anodes with silicon. In the last issue of Charged, we discussed Tesla’s announcement that it had begun to use small… Read more »
Efficient Drivetrains and XALT Energy announce supply agreement
Battery manufacturer XALT Energy (formerly Dow Kokam) has agreed to supply its NMC graphite Li-ion battery packs to Efficient Drivetrains, Inc. (EDI), for use in the company’s PHEV PowerDrive and electric power export solutions. Shipment of the initial order should be completed in the first quarter of 2016. EDI will use XALT’s first-generation battery system… Read more »
Paraclete Energy finds a way to make silicon anodes with good cycling performance
Silicon’s high theoretical charge capacity has inspired a tremendous amount of research into the possibility of using it to replace at least part of the graphite in lithium-ion battery anodes. However, Si presents major technical challenges. It can undergo a volume change of up to 300% during charging and discharging, limiting cycle life. Michigan-based Paraclete… Read more »
Researchers develop new silicon-sulfur-graphene electrode material
Researchers from the University of Waterloo and GM’s Global Research and Development Center have developed a new silicon-based anode material that they say could enable batteries with almost 10 times more energy density than today’s state of the art. In “Evidence of covalent synergy in silicon–sulfur–graphene yielding highly efficient and long-life lithium-ion batteries,” published in… Read more »
Enevate says its batteries can charge 5-10 times faster than conventional Li-ion
California-based Enevate Corporation has announced an “ultrafast charging” feature for its batteries, which has been demonstrated to provide a 90% charge in 15 minutes while increasing capacity compared to current Li-ion batteries. Enevate’s HD-Energy Technology uses silicon-dominant composite anodes, and the company claims an 25-50% increase in energy density over conventional graphite anode cells. The… Read more »
Is Nissan teasing details of 2nd generation LEAF?
Nissan recently invited a small group of journalists to its Advanced Technology Center in Atsugi, near Tokyo, ostensibly to show them the IDS concept vehicle now on display at the Tokyo Motor Show. However, Bertel Schmitt, an old Japan hand, soon surmised that the reporters were looking at “the future Nissan LEAF in drag,” and… Read more »