fbpx

Search Results Found For: "dendrite"

Real-time images of lithium dendrite structures could lead to better batteries

Scientists at the DOE’s Oak Ridge National Laboratory have captured the first real-time nanoscale images of lithium dendrite structures in lithium-ion batteries. The ORNL team is confident that its research, published in Nano Letters, will be of great benefit to scientists who are experimenting with different ways to tackle the dendrite problem. Dendrites form when… Read more »

Kevlar-based nanocomposite foils dendrites for bulletproof batteries

Those doggone dendrites are a bane of battery builders. These pesky fern-like growths can form on the surfaces of anodes during cycling, reducing battery life or even causing a catastrophic short circuit – this is how the battery fires on the Boeing 787 are thought to have started. A team of researchers from the University… Read more »

Researchers develop dendrite-free lithium films, an important step toward lithium metal anodes

There’s a lot of interest in using lithium metal as an anode material, because of its theoretical high capacity of 3,860 mAh g−1 (around ten times that of the graphite anodes used in typical Li-ion batteries). However, it doesn’t measure up in terms of cycle life and safety requirements, and one reason is the formation of… Read more »

ONE’s hybrid battery pack combines the best aspects of two chemistries to deliver 600 miles of EV range

Q&A with ONE CTO Dr. Steven Kaye. There is a wide range of characteristics that describe the performance of any given battery chemistry: energy density, specific energy, specific power, discharge efficiency, self-discharge rate, cycle life, calendar life, and—not the least important—cost.  Some types of Li-ion chemistries are really good in a few characteristics but fall… Read more »

Are solid-state batteries always safer than Li-ion?

Many in the EV industry see solid-state batteries as the future, and one of the reasons is that the more stable solid electrolyte is expected to be safer than current liquid electrolytes. However, new research indicates that the picture may be more complex. A recent study led by the DOE’s Sandia National Laboratories, published in… Read more »

University of Michigan researchers predict 1,000 real-world cycles for their lithium-sulfur battery

Researchers at the University of Michigan have developed a lithium-sulfur battery which they estimate will be able to achieve 1,000 real-world cycles with fast charging. In an article published in Nature Communications, the researchers write: “Lithium-sulfur batteries have a high specific capacity, but lithium polysulfide (LPS) diffusion and lithium dendrite growth drastically reduce their cycle… Read more »

Startup Safe-Li to commercialize new battery separator tech that prevents thermal runaway

Pennsylvania-based venture capital firm Green Swan Partners (GSP) has reached an agreement with Skysong Innovations, the technology transfer arm of Arizona State University (ASU), granting GSP the exclusive option to finalize commercial rights to ASU’s fire-safe battery technologies. The technologies were invented by ASU Regents’ Professor Dr. Jerry Lin, who is also the Chief Scientist… Read more »

Li-S Energy and Janus Electric to develop lithium-sulfur cells for swappable battery packs

Australian battery specialists Li-S Energy and Janus Electric are working together to develop lithium-sulfur and/or lithium metal battery cells for Janus’s swappable battery packs. Janus Electric offers products for converting heavy diesel trucks to EVs, based on an exchangeable battery system. Li-S Energy’s lithium-sulfur cells feature a cathode made of sulfur, carbon, a nanomaterial called… Read more »

Funding round delivers $16 million for Sepion’s lithium metal batteries

California battery developer Sepion has received $16 million from investors, including international chemical firm Solvay. Sepion plans to use the funds to speed up the commercialization of lithium metal batteries for EVs. Solvay offers additives for the electrolytes in Li-ion cells. Sepion’s niche is lithium metal battery cells, which Solvay says feature high energy density… Read more »

ORNL scientists use electrochemical pulse to overcome contact impedance

Scientists at Oak Ridge National Laboratory have developed a scalable, low-cost method to improve the joining of materials in solid-state batteries. One of the challenges in manufacturing solid-state batteries is the difficulty of getting materials to properly join and remain stable during repeated cycles of charging and discharging. Scientists studying methods to overcome this contact… Read more »