Search Results Found For: "dendrites"

PNNL scientists pinpoint cause of dendrites in lithium batteries

Scientists at the DOE’s Pacific Northwest National Lab have uncovered a “root” cause of the growth of needle-like structures – known as dendrites and whiskers – that plague lithium batteries and can cause short circuit, failure, and even fire. Dendrites are tiny, rigid tree-like structures that can grow inside a lithium battery. Their needle-like projections… Read more »

Rice University adds red phosphorus to separators to foil dendrites

Rice University scientists have found that adding a layer of red phosphorus to separators in lithium metal batteries can signal when damaging dendrites threaten to create a short circuit. Rice University chemist James Tour made lithium metal test cells with a coat of red phosphorus on the separator, which keeps the anode and cathode electrodes… 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 »

Oxis Energy’s ultralight Li-sulfur batteries are aimed at aviation

Oxfordshire-based Oxis Energy has been working on lithium-sulfur battery technology since 2004 (Charged has reported on the company several times over the years). In a recent article in  IEEE Spectrum, the company’s Head of Battery Development and Integration, Mark Crittenden, explains why lithium-sulfur tech is uniquely suited to electric aviation. Weight is a critical constraint… Read more »

Researchers develop novel battery electrolyte for lithium metal batteries

A new lithium-based electrolyte invented by Stanford University scientists could pave the way for the next generation of EVs. In a study published in Nature Energy, Stanford researchers demonstrated how their novel electrolyte design boosts the performance of lithium metal batteries. “Most electric cars run on lithium-ion batteries, which are rapidly approaching their theoretical limit… Read more »

Solid-state battery tech: What’s close to commercialization, and what’s still years away?

With a fresh round of funding, Wildcat Discovery Technologies is busy expanding its facilities, building up its battery team and doubling down on promising solid-state research projects. We asked the energy storage experts to help clear up the hype around solid-state batteries. Whenever Charged needs to better understand the complexities of the latest and greatest battery… Read more »

Researchers make Ceramic-based flexible electrolyte sheets for lithium metal batteries

Researchers at Tokyo Metropolitan University have developed a new method to make ceramic-based flexible electrolyte sheets for lithium metal batteries. They combined a garnet-type ceramic, a polymer binder, and an ionic liquid, producing a quasi-solid-state sheet electrolyte. The synthesis is carried out at room temperature, requiring significantly less energy than existing high-temperature (>1,000° C) processes…. Read more »

Samsung researchers describe all-solid-state battery with silver-carbon composite layer

Researchers from the Samsung Advanced Institute of Technology (SAIT) and the Samsung R&D Institute Japan (SRJ) have published a study on high-performance, long-lasting all-solid-state batteries in the journal Nature Energy. Compared to lithium-ion batteries, which employ volatile liquid electrolytes, all-solid-state batteries use non-volatile solid electrolytes that support greater energy density. However, their lithium metal anodes… Read more »

New potassium metal battery design could solve dendrite problem

In a paper published in Proceedings of the National Academy of Sciences, researchers from Rensselaer Polytechnic Institute demonstrated how they can overcome the dendrite problem to create a metal battery that performs nearly as well as a lithium-ion battery but relies on potassium, which the researchers say is a more abundant and less expensive element…. Read more »

IBM unveils heavy metal-free battery that performs better than Li-ion

IBM Research has unveiled new battery materials extracted from seawater that it says could help eliminate the need for dangerous heavy metals in battery production. Use of the three new proprietary materials create a battery chemistry that does not use heavy metals or other substances that suffer from concerns about sourcing. Beyond the environmental and… Read more »