On July 30th, Professor Cui Yi from Stanford University organized StorgeX International Symposium to invite Timothy Holme, CTO of Quantum Scape, to report on Quantum Scape's progress in the development of lithium metal solid-state batteries. We will take you to review the specific content of this report.

Firstly, the latest performance report of single-layer Pouch Cell:

An external pressure of 3.4 times atmospheric pressure is required to maintain close contact between the materials inside the battery

Cycle more than 1000 times, with a maximum capacity retention rate of>80%

Fast charging takes only 15 minutes from 0% to 80%, and 12 minutes from 10% to 80%

Simulated running tests provided by car manufacturers

Good low-temperature condition, can operate at a minimum of -30C

Tested at -10C, maximum capacity retention rate>95% after 110 cycles


This includes some more challenging tests conducted using Coin size Cell:

Cyclic testing without external pressure, with a maximum capacity retention rate of~80% after 1400 cycles

The positive electrode material uses lithium iron phosphate, and the maximum capacity retention rate after 100 cycles is>95%


Then are the test data of the 4-layer Pouch Cell at 3.4 times atmospheric pressure:

C/3 charging and discharging rate, after 900 cycles, the maximum capacity retention rate is>90%

1C charging and discharging rate, after 400 cycles, the maximum capacity retention rate is>90%

The following is the previously unpublished test data of a 10 layer Puch Cell at 3.4 times atmospheric pressure:

1C charging and discharging rate, after 35 cycles, the maximum capacity retention rate is>98%. Because it is the latest test, there are not many cycles yet.

Finally, there are some company plans:

Comparison of publicly available data between company products and other solid-state battery companies

Important milestones for the company in the next 4 years

In 2022, provide customers with prototype samples

In 2023, QS-0 generation complete machine samples will enter automotive testing

In 2025, mass production of QS-0 generation products

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Author Introduction:

Dr. Xie Wei, Bachelor and Master of Materials Science from Tsinghua University, and Ph.D. in Chemical Engineering from the University of Texas (Austin) in the United States. Mainly engaged in the development of energy storage batteries, has held important positions in multinational corporations and startups, led multiple research and development projects funded by the US Department of Energy, and won the 2013 US Annual 100 Best Research and Development Technology Award. Published 17 papers in top journals in materials science and energy storage, served as a reviewer for 5 international journals, and has applied for 17 international invention patents.

Introduction to ZH Energy Storage Company:

Shenzhen ZH Energy Storage Technology Co., Ltd. is committed to the research and development, promotion, and application of energy storage technology, aiming to help achieve China's goal of "carbon neutrality" through the application of electrochemical energy storage technology. In the early stages of development, the company focused on providing technical support and consulting services to the Chinese energy storage market by leveraging its accumulated industry experience and outstanding research and development capabilities in the field of energy storage. At the same time, the company focuses on conducting research and analysis on the Chinese energy storage market, and developing or introducing the most advanced and effective energy storage technologies for the Chinese market.

Company's technical research and development direction: water-based energy storage batteries, lithium-ion battery materials, fuel cells, ion exchange membranes, coatings and adhesives, membrane separation technology.

Domestic business: Technical cooperation and academic exchange between liquid flow batteries and high-energy density lithium-ion batteries, technical lectures on the company's technology research and development direction, research and development consulting, and guidance on paper writing.