Electrode innovation promises to triple EV battery capacity, faster charging

October 08, 2020 //By Christoph Hammerschmidt
Electrode innovation promises to triple EV battery capacity, faster charging
French ultracapacitor and battery chemistry company Nawa Technologies has announced a new carbon-based electrode for batteries that enables manufacturers to build traction batteries with much higher performance.

In particular, Nawa promises to increase battery capacity by a factor up to three while at the same time reduce charging time down to minutes instead of hours. What’s more, the new technology will quintuple the battery lifetime. And that’s not all – the technology is also said to be more eco-friendly since it relies less on rare-earth materials.

Applied to an electric vehicle, an advanced lithium-ion battery with an Ultra Fast Carbon Electrode could double the kWh stored, meaning EVs could draw on more power to go further, or faster, making 1,000 km ranges commonplace in a mass market EV. Charging time could be reduced to as little as five minutes for an 80 per cent charge (see video).

The technology is based on an electrode design called Vertically Aligned Carbon Nanotube (VACNT). With this approach, batteries are no longer limited to powder-based systems, the company says. VACNT can be used with existing and advanced new battery chemistries.

Currently one of the major limitations of battery power, energy and lifecycle is the design and material used for the electrode. Based on inefficient powders, existing electrodes have low electrical, thermal and ionic conductivity, along with poor mechanical behaviour when discharged and recharged, and can also suffer from early delamination and degradation leading to safety and lifecycle issues.

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