Search Results Found For: "lithium metal"

The technical reasons Tesla would limit supercharging speed, and other practical charging considerations

Recently, a bit of a kerfuffle kicked up when a Tesla Model S owner noticed that the maximum charge rate for his car on the Supercharger network had suddenly been cut from 120 kW down to 90 kW, apparently the result of too many fast charge cycles. Tesla’s explanation was, essentially, that many things can… Read more »

EV tech explained: What are the limiting factors of an EV’s regenerative braking force?

In many EVs, regenerative braking is limited by the manufacturer to a modest level, and usually offers little or no ability for the driver to adjust it (aside from the few cases in which regen is made proportional to the initial movement of the brake pedal). Is tepid regen braking the result of some sort… Read more »

Tesla’s chief motor engineer discusses the potential of next-generation motor technologies

Tesla spends a considerable amount of resources on basic research into EV systems – as well it should. EV technology is very young compared to that of ICE vehicles, so it’s safe to assume that, in a few short years, the aggregate of many incremental technology advances could lead to significantly better EVs. Of course,… Read more »

New episode of Nova looks at the state of battery tech

As growing EV sales make the headlines, the general public is becoming more aware of the batteries they carry around in their pockets and laptop cases. A recent episode of PBS’s Nova, “Search for the Super Battery,” offers a digestible summary of some of the advances happening in the battery field. In an attempt to… Read more »

Converting bulk alloys to oxide nanowires could produce cheaper battery membranes

Image: Alloy in solvent A simple technique for producing oxide nanowires directly from bulk materials could dramatically lower the cost of producing the one-dimensional (1D) nanostructures. That could enable the production of thermally stable, strong battery membranes able to withstand temperatures of more than 1,000° C. In “Transformation of bulk alloys to oxide nanowires,” recently published… Read more »

MIT researchers investigate mechanics of sulfide-based solid electrolyte material

IMAGE: Using specialized equipment, a team from MIT  did tests in which they used a pyramidal-tipped probe to indent the surface of a piece of the sulfide-based material. Surrounding the resulting indentation (seen at center), cracks were seen forming in the material (indicated by arrows), revealing details of its mechanical properties. Battery scientists are the world are exploring… Read more »

An airbag for battery packs: PyroPhobic says its unique thermoplastics will stop thermal runaway

Engineers have been searching for ways to mitigate the risk of fire with Li-ion batteries since the technology was first commercialized. Chemists are creating new cell formulations that are less prone to problems, electronics experts are designing fail-safe battery management systems, and mechanical engineers are building complex cooling and fire suppression systems. A common rule… Read more »

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New interfacial architecture enables high-energy solid-state Li battery

Researchers led by a team from China’s Ningbo Institute of Materials Technology and Engineering have developed stable solid-state lithium batteries with high energy and power densities. In “High-Energy All-Solid-State Lithium Batteries with Ultralong Cycle Life,” published in Nano Letters, the scientists explain how they developed a new interfacial architecture. They say that their design approach… Read more »

Researchers increase energy density by eliminating first-cycle capacity loss

In the quest to increase the energy density of Li-ion batteries, Yuan Yang, an Assistant Professor at Columbia Engineering, has developed a novel approach: reducing or eliminating capacity loss that occurs when a battery is first manufactured. In a paper recently published in Nano Letters, Yang and colleagues explain how this new method could improve… Read more »