SAN JOSE, Calif. – January 27, 2022 – QuantumScape Corporation (NYSE: QS), a leader in the development of solid-state lithium-metal batteries, today released data showing its battery cells have completed 400 consecutive 15-minute fast-charging (4C) cycles from 10% to 80% of the cell’s capacity while retaining well above 80% of the initial energy – a first for this type of battery technology. QuantumScape conducted the tests on commercially relevant sized single-layer prototype battery cells at multiple temperatures (25 °C and 45 °C), 3.4 atmospheres of pressure and 100% depth of discharge.
Internal combustion engine vehicles can be refueled in about 5 minutes, whereas today’s leading lithium-ion electric vehicle (EV) batteries typically need around 30 minutes to fast charge from 10% to 80% capacity at a rate that doesn’t reduce the battery’s lifetime. This longer charge time prevents EVs from providing the same user experience as internal combustion engine vehicles. If QuantumScape can successfully deliver today’s demonstrated capability into the marketplace, the time difference between recharging EVs and refueling their combustion-engine counterparts will be only several minutes, which could help enable broader EV adoption.
The materials used in today’s EV batteries, such as the graphite in the anode, have physics-based rate limitations that can cause permanent damage when charged repeatedly at fast rates, reducing the range the vehicle can travel. This can put EV drivers in the position to choose between the convenience of fast charging and preserving their battery range. QuantumScape tested battery cells from a commercially available third-party EV with the same protocol and found that those third-party cells rapidly degrade after only a few dozen charge cycles.
QuantumScape’s lithium-metal battery cells retained more than 80% of their initial energy after 400 cycles of 15-minute (4C) fast charge between a 10% and 80% state of charge. For a vehicle with 400 miles of range, 400 cycles represent approximately 160,000 total driving miles.
“We believe QuantumScape’s lithium-metal technology provides a pathway to significantly improved fast-charging performance in EVs,” said Jagdeep Singh, co-founder and CEO of QuantumScape. “We believe innovations like this are crucial to narrowing the performance gap between EVs and combustion-engine based vehicles, and represent the future of the electrified transportation sector.”
QuantumScape’s fast-charging results are detailed in this new white paper and will be presented at a live webinar today, commencing at 9:30 am PST.
About QuantumScape Corporation
QuantumScape is a leader in developing next-generation solid-state lithium-metal batteries for electric vehicles. The company is on a mission to revolutionize energy storage to enable a sustainable future. For more information, please visit www.quantumscape.com.
This article contains forward-looking statements within the meaning of the federal securities laws and information based on management’s current expectations as of the date of this current report. All statements other than statements of historical fact contained in this article, including statements regarding the future development of QuantumScape’s battery technology, the anticipated benefits of QuantumScape’s technologies and the performance of its batteries, and plans and objectives for future operations, are forward-looking statements. When used in this current report, the words “may,” “will,” “estimate,” “pro forma,” “expect,” “plan,” “believe,” “potential,” “predict,” “target,” “should,” “would,” “could,” “continue,” “believe,” “project,” “intend,” “anticipates” the negative of such terms and other similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain such identifying words.
These forward-looking statements are based on management’s current expectations, assumptions, hopes, beliefs, intentions, and strategies regarding future events and are based on currently available information as to the outcome and timing of future events. These forward-looking statements involve significant risks and uncertainties that could cause the actual results to differ materially from the expected results. Many of these factors are outside QuantumScape’s control and are difficult to predict. QuantumScape cautions readers not to place undue reliance upon any forward-looking statements, which speak only as of the date made. Except as otherwise required by applicable law, QuantumScape disclaims any duty to update any forward-looking statements. Should underlying assumptions prove incorrect, actual results and projections could differ materially from those expressed in any forward-looking statements. Additional information concerning these and other factors that could materially affect QuantumScape’s actual results can be found in QuantumScape’s periodic filings with the SEC. QuantumScape’s SEC filings are available publicly on the SEC’s website at www.sec.gov.
© 2023 QuantumScape Corporation
1730 Technology Drive, San Jose, CA 95110
Pamela Fong is QuantumScape’s Chief of Human Resources Operations, leading people strategy and operations, including talent acquisition, organizational development and employee engagement. Prior to joining the company, Ms. Fong served as the Vice President of Global Human Resources at PDF Solutions (NASDAQ: PDFS), a semiconductor SAAS company. Before that, she served in several HR leadership roles at Foxconn Interconnect Technology, Inc., a multinational electronics manufacturer, and NUMMI, an automotive manufacturing joint venture between Toyota and General Motors. Ms. Fong holds a B.S. in Business Administration from U.C. Berkeley and a M.S. in Management from Stanford Graduate School of Business.