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Hybrid membrane doubles the lifetime of rechargeable batteries

Chemists prevent dendrite formation in lithium metal batteries

21-Jun-2021

The energy density of traditional lithium-ion batteries is approaching a saturation point that cannot meet the demands of the future – for example in electric vehicles. Lithium metal batteries can provide double the energy per unit weight when compared to lithium-ion batteries. The biggest ...

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Semiconductor technology mitigates fire risk in electric vehicle batteries

Convergence of semiconductor physics and electrochemistry leads to effective inhibition of dendrite formation using semiconducting passivation layers

17-Jun-2021

Despite rapid development of electric vehicles (EVs), the safety of the lithium-ion (Li-ion) batteries remains a concern as they are as a fire and explosion risk. Among the various approaches to tackle this issue, Korean researchers have used semiconductor technology to improve the safety of ...

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Scientists discover how oxygen loss saps a lithium-ion battery's voltage

Measuring the process in unprecedented detail gives them clues to how to minimize the problem and protect battery performance

16-Jun-2021

When lithium ions flow in and out of a battery electrode during charging and discharging, a tiny bit of oxygen seeps out and the battery's voltage - a measure of how much energy it delivers - fades an equally tiny bit. The losses mount over time, and can eventually sap the battery's energy ...

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Stabilizing gassy electrolytes could make ultra-low temperature batteries safer

New separator improves battery safety and its performance in the extreme cold

09-Jun-2021

A new technology could dramatically improve the safety of lithium-ion batteries that operate with gas electrolytes at ultra-low temperatures. Nanoengineers at the University of California San Diego developed a separator--the part of the battery that serves as a barrier between the anode and ...

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Stepstone for sustainable batteries – greener carbons

Project HiQ-CARB aims to provide new carbons with a superior performance and a low carbon footprint for future green batteries in Europe

08-Jun-2021

Lithium-ion batteries require in addition to lithium metal a number of sophisticated functional materials for their performance. Some of them sound rather unspectacular: conductive additives. In fact, conductive additives like carbon black or carbon nanotubes are a decisive component for the ...

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The biodegradable battery - an ecological miracle

New mini-capacitor consists of carbon, cellulose, glycerin and table salt

07-Jun-2021

The number of data-transmitting microdevices, for instance in packaging and transport logistics, will increase sharply in the coming years. All these devices need energy, but the amount of batteries would have a major impact on the environment. Empa researchers have developed a biodegradable ...

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Electrochemical cell harvests lithium from seawater

The system offers an economical way to source essential battery material

07-Jun-2021

Lithium is a vital element in the batteries that power electric vehicles, but soaring lithium demand is expected to exhaust land-based reserves by 2080. KAUST researchers have now developed an economically viable system that can extract high-purity lithium from seawater. The oceans contain about ...

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Hybrid redox-flow battery with a long cycle life

Researchers use the abundant chemical element manganese as active material

02-Jun-2021

Redox‑flow batteries store electrical energy in chemical compounds that are dissolved in an electrolyte. They are a particularly promising alternative to lithium‑ion batteries as stationary energy storage. A team headed by Prof. Dr. Ingo Krossing from the Institute of Inorganic and Analytical ...

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Advancing aqueous redox flow batteries through molecular engineering

28-May-2021

Helping to advance the potential of aqueous redox flow batteries - which could provide safe grid-scale energy storage - researchers have engineered a new class of molecules to provide energy storage for this battery type. "We have demonstrated here the ability to pursue and exploit accelerated ...

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Researchers proposed an attractive cheap organic material for batteries

New molecular design principle for battery polyimides

27-May-2021

A new report by Skoltech scientists and their colleagues describes an organic material for the new generation of energy storage devices, which structure follows an elegant molecular design principle. It has recently been published in ACS Applied Energy Materials and made the cover of the ...

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