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SynQuasi

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06/12/23

08:47

Post #: 71293267
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Originally posted by deckhand ↑

Link for one to read:

https://www.pnnl.gov/news-media/longer-lasting-sodium-ion-batteries-horizon

Non-flammable technology

The new PNNL-developed sodium-ion technology uses a naturally fire-extinguishing solution that is
also impervious to temperature changes and can operate at high voltages. One key to this feature is
the ultra-thin protective layer that forms on the anode. This ultra-thin layer remains stable once
formed, providing the long cycle life reported in the research article.
This vial of clear, sodium-ion electrolyte provides the circulating “blood” that keeps the energy flowing
through an experimental battery technology. (Photo by Andrea Starr | Pacific Northwest National
Laboratory)
“We also measured the production of gas vapor at the cathode,” said Phung Le, a PNNL battery
chemist and one of the lead authors of the study. “We found very minimal gas production. This
provides new insights to develop stable electrolyte for sodium-ion batteries that may operate at
elevated temperatures.”
For now, the sodium-ion technology still lags behind lithium in energy density. But it has its own
advantages, such as imperviousness to temperature changes, stability and long cycle life, which are
valuable for applications of certain light-duty electric vehicles and even grid energy storage in the
future.
The research team continues to refine their design. Le noted that the team is experimenting with
other designs in an effort to reduce—and eventually eliminate—the need to include cobalt, which is
toxic and expensive if not recovered or recycled.
In addition to Jin, Le and Zhang, the full PNNL research team included Peiyuan Gao, Yaobin Xu,
Biwei Xiao, Mark H. Engelhard, Xia Cao, Thanh D. Vo, Jiangtao Hu, Lirong Zhong, Bethany E.
Matthews, Ran Yi, Chongmin Wang, Xiaolin Li and Jun Liu.
The study was supported by the Department of Energy’s Office of Energy Efficiency and Renewable
Energy, Vehicle Technologies Office. Imaging studies were performed at EMSL, the Environmental
Molecular Sciences Laboratory, a DOE Office of Science User Facility at PNNL sponsored by the
Office of Biological and Environmental Research

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And you point is what exactly?

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