Making the highest known energy density lithium-ion batteries in the world


Making the highest known energy density lithium-ion batteries in the world

Industry Leading Silicon Anode Technology

Amprius Technologies’ batteries deliver up to 100% higher energy density than standard lithium-ion batteries. This means our cells provide more energy and power with much less weight and volume.

Up to 100% Higher Energy Density than Conventional Batteries

Amprius Technologies continually explores new ways to improve battery technology and manufacturing processes. Amprius’ batteries have established breakthrough performance with new cells up to 500 Wh/kg.

Headquarters in Fremont, CA

Founded in 2008, Amprius Technologies is a pioneer and the established leader in the production of silicon anodes for high energy density lithium-ion batteries.

Strong IP Position with 80+ Patents

Core technology, manufacturing process, and cell design.

GWh-Scale Factory Planned in Brighton, CO

Amprius is planning to establish its state-of-the-art gigawatt-scale factory to meet growing customer demand. This factory site is expected to greatly increase Amprius’ manufacturing capacity. Amprius expects to produce both SiCore and SiMaxx batteries at its gigawatt-scale factory in Colorado.

Our mission and the path forward

Amprius Technologies' mission is to make the highest energy density lithium-ion batteries in the world. Our products enable new applications and accelerate markets that couldn’t exist without the storage capabilities that we provide.

Amprius Batteries Validated by Industry Leaders

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The leadership team

Our senior management team has earned the trust of leading public and private organizations and includes experts in technology, business management, finance, sales and marketing.

Dr. Kang Sun

Chief Executive Officer

Dr. Sun is a globally recognized business executive and industry visionary. Prior to Amprius, Dr. Sun led two business ventures in the renewable energy space – JA Solar Co. Ltd. (launched IPO on NASDAQ) and RayTracker Inc. (acquired by First Solar Inc). He also served as vice president and general manager at Honeywell International Inc. and vice president and CTO at Oce, N.V.


Mr. Jon Bornstein

President, Amprius Lab

Jon is a results-driven leader of R&D, product development, and manufacturing with a record of success in organizations ranging from pre-product start-ups to public companies. He is a Silicon Valley veteran who has spent the better part of his career in the semiconductor industry and brings a wealth of experience in technology development and high volume manufacturing.


Dr. Ionel Stefan

Chief Technology Officer

Dr. Stefan is a recognized expert in electrochemistry and energy storage and leads the company’s scientific research and development activities for advancing lithium ion cell performance.


Ms. Sandra Wallach

Chief Financial Officer

Sandra brings to Amprius Technologies over 20 years of multifaceted financial experience leading global public and private enterprises.  Most recently she was CFO of Identiv, Inc. [NASDAQ INVE], building on leadership positions at MiaSole, Juniper Networks, Intuit and General Electric.


Dr. Weijie Wang

Amprius Technologies Fellow

Dr. Wang pioneered the design and fabrication of the silicon nanowire anode.  He is responsible for nanowire development and manufacturing.


Mr. Aaron Bakke

Vice President of Operations

Aaron has deep expertise in quality and manufacturing, with broad experience in the automotive and aerospace industries. He has a record of success in lean manufacturing, ERP implementation, quality assurance, and supply chain management. His dedication to excellence has resulted in globally recognized accomplishments in quality assurance.


Mr. Ronnie Tao

Vice President of Business Development

Ronnie is an industry veteran with buyer and supply-side experience along with key strategic development and sale roles.  He successfully led market penetration efforts that span Fortune 500 to mid-size and small companies.  Ronnie has a wealth of experience in many market verticals including mobility, robotics, and consumer electronics.


Mr. Andrew Huie

Vice President of Infrastructure

Andrew brings over 30 years of facility development and management experience to Amprius. Most recently, he served as the Director of Facilities for Panasonic Energy of North America at Tesla’s first Gigafactory in Sparks, NV. Andrew is a Certified Facility Manager and has held different senior management positions for expansions of critical infrastructures at The Jackson Laboratory, Xyratex International, Jacobs Engineering Group, Optisolar, and NEC Electronics America.


Ms. Siyu Jiang

Vice President of Legal Affairs

Ms. Jiang brings more than a decade of experience in the legal industry. For seven years, she was an associate at Wilson Sonsini Goodrich and Rosati, counseling both public and private companies on corporate and transactional legal proceedings. Prior to that, she was an associate at Davis Polk and Wardell, serving as counsel for various public offerings and capital markets deals.


Silicon Anode Platform Revolutionizes Lithium-ion Batteries