PNNL

Researchers in the U.S. have repurposed a commonplace chemical used in water treatment facilities to develop an all-liquid, iron-based redox flow battery for large-scale energy storage. Their lab-scale battery exhibited strong cycling stability over one thousand consecutive charging cycles, while maintaining 98.7% of its original capacity.

Scientists in the United States working with silicon anodes for lithium-ion batteries have managed to model key mechanisms that lead to fast developing performance loss in the anodes. Understanding what causes the silicon to swell up and subsequently fall apart, the scientists say, is an important step to preventing it, and producing long lasting, high-capacity batteries.

Scientists in the United States have developed a carbon nanotube method of fabricating a lithium-ion battery with a silicon anode. The device reportedly demonstrated better than 87% capacity retention after 1,500 cycles. The developers say their discovery overcomes many of the obstacles to the use of silicon as an anode and could open up the use of other materials for electrodes in lithium-ion devices.