Charged EVs | QuantumScape prototype Li-metal cell retains 95% discharge energy over 1,000 cycles

QuantumScape, a US battery firm, has introduced that its 24-layer A0 prototype cell retained over 95% discharge vitality over 1,000+ full cycle equivalents in lab testing.

QuantumScape said that no automotive-format lithium-metal battery has exhibited this discharge vitality retention throughout an analogous cycle depend at room temperature and modest stress. The only-layer cells that QuantumScape reported in Q3 2022 have now achieved between 1,500 and a couple of,000 cycles to ~80% discharge vitality retention with zero externally utilized stress, which is 1.5-4 occasions the life cycle of many client electronics, in keeping with the corporate. 

QuantumScape has named the proprietary, hybrid cell format of its deliberate industrial product FlexFrame. FlexFrame makes use of pouch and prismatic cell designs to deal with the lithium steel growth throughout charging/discharging and pack the identical variety of layers with extra vitality per layer right into a slimmer package deal for EVs.

“Along with the higher-loading cathode outcomes reported in our Q1 2023 shareholder letter, we now have now individually demonstrated three key features of our production-intent cell design: 24 layers, larger cathode loading (~5mA/cm²), and our new cell format. When these features are mixed with enhancements to packaging effectivity and manufacturing course of management and automation for improved reliability, it types the core of our first industrial product, QSE-5. QSE-5 is designed to have ~5 amp-hours (Ah) of capability; for reference, the 2170 battery utilized in a number of main EV fashions has a typical capability of ~4.5–5 Ah,” QuantumScape stated in its Q3 fiscal 2023 letter to shareholders.

Supply: QuantumScape by way of Green Car Congress