Li-ion cells often have strong opinions about their clamping pressures, wanting neither too hard, nor too soft. It’s a classic “Goldilocks problem,” with a sweet spot that balances electrochemical performance, cell life, and mechanical retention. Goldilocks also changes her mind, often, as the cells breathe and swell through a lifetime of usage. When designing modules… Read more »
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Evonik invests in graphene specialist SuperC
Specialty chemical provider Evonik has invested in Chinese graphene specialist SuperC. SuperC has developed a process to produce few-layer graphene (FLG) and pastes for electrodes in lithium-ion batteries. According to the company, the addition of graphene increases the electrical and thermal conductivity of the batteries for faster charging and better overall performance. The batteries also… Read more »
A closer look at graphite—its forms, functions and future in EV batteries
Q&A with Graphex CEO John DeMaio Reading the EV press, you might assume that lithium, cobalt and nickel are the stars of the battery show—they get a lot of coverage, as pundits debate the relative merits of NMC and LFP cathode chemistries and agonize over looming shortages. Meanwhile, over in the anode, there’s an unsung… Read more »
China is firmly ensconced in the lithium-ion battery supply chain
The development of local battery supply chains is a high priority in both North America and Europe, but as an infographic from Benchmark Mineral Intelligence demonstrates, removing China from the equation will be a difficult task, as the country currently dominates the processing of battery minerals. Most of the world’s lithium, nickel, cobalt, and manganese… Read more »
Adamas Intelligence says LFP cell deployment is up 237% in H1 2022
The latest biannual report on the global EV market from Adamas Intelligence highlights expanding EV sales, as well as the growing popularity of LFP battery chemistries, in the first half of 2022. In the first half of 2022, 6.23 million new passenger EVs were registered around the world—an increase of 42% compared to the same… Read more »
TWAICE battery analytics platform promises enormously valuable insights at every point in a battery’s lifecycle
How healthy is your battery pack? As the old saw goes, if you can’t measure it, you can’t manage it. As the EV ecosystem develops, there will be an increasing need to measure and manage the performance of battery cells. Cell manufacturers need a standardized way to evaluate test data for new cells; EV designers… Read more »
The redesigned federal EV tax credit and other EV-related measures
Unpacking the Inflation Reduction Act The recent passage of the Inflation Reduction Act—a sweeping package of tax, health care and climate measures—was like the happy ending to one of those heartwarming “Save Christmas” stories. We may never know what Machiavellian machinations persuaded Senator Manchin to release Santa Claus, but the merry old elf is coming… Read more »
The EV raw materials crunch: How bad, how long, how to solve it?
This article originally appeared in Issue 60: April-June 2022 Subscribe now Every new technology must overcome a series of temporary constraints on its way to widespread adoption. Since modern EVs appeared a decade ago, they’ve motored past many of these bottlenecks, (or hurdles, or roadblocks—pick your preferred metaphor). Range has increased, access to charging infrastructure has expanded,… Read more »
A closer look at brushed AC motors in EVs
Everything old is new again: BMW’s fifth-generation eDrive features a wound-field synchronous AC motor Brushed DC (and AC/DC universal) motors are much maligned for a number of reasons, but one of the chief—if, perhaps, somewhat exaggerated—complaints is that the graphite brushes, and the segmented copper commutator they ride on, wear out over time, all the while producing… Read more »
Gap fillers for thermal management in electric vehicles
Sponsored by Parker Lord The article will be valuable for Electric Vehicle (EV) battery manufacturers as well as battery module and pack designers to help choose the right thermal interface material for battery pack needs. Two-component (2K) gap fillers provide customers with a variety of thermal conductivities and chemistries to choose from, which provide high… Read more »