High rate energy storage battery

Why is high energy density a challenge in the battery field?

Nature Energy 9, 643–653 (2024) Cite this article Achieving extremely fast charging yet maintaining high energy density remains a challenge in the battery field. Traditional current collectors, being impermeable to electrolytes, hinder the movement of Li + ions and restrict the high-rate capability of thick electrodes.

Is there a porous current collector for energy-dense and fast-charging batteries?

Traditional current collectors, being impermeable to electrolytes, hinder the movement of Li + ions and restrict the high-rate capability of thick electrodes. Here we conceptualize a porous current collector for energy-dense and extremely fast-charging batteries.

Is high rate battery performance limiting development of electric vehicles?

However, the unsatisfactory performance of vehicle batteries at high rates is actually limiting further development of electric vehicles, because poor rate performance means low output power and long charging time. Especially, for the emerging electric low-height aircraft, enough high rate performance of power batteries is necessary.

What is a PCC for high-energy and fast-charging batteries?

In summary, we first conceptualized a PCC for high-energy and fast-charging batteries. This design allows for the simultaneous passage of Li + ions through both the PCC and separator, reducing the effective Li + transport path length by one half without compromising the electrode thickness.

Why do high-energy batteries need a DLC system?

This design allows for the simultaneous passage of Li + ions through both the PCC and separator, reducing the effective Li + transport path length by one half without compromising the electrode thickness. As a result, the DLC capability of high-energy batteries can be quadrupled.

Can thick electrodes be used for high-rate charge-storage devices?

Thick electrodes (up to 40 μm thick) prepared with T-Nb2O5 offer the promise of exploiting intercalation pseudocapacitance to obtain high-rate charge-storage devices.