100% Silicon Nanowire* Anode Technology Revolutionizes Lithium-ion Batteries
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.

Research & development

Building on research at Stanford University, Amprius Technologies continually explores new ways to improve battery technology and manufacturing processes. Amprius Technologies’ batteries have established breakthrough performance with new cells approaching 450 Wh/kg over hundreds of cycles.

Real world applications

Amprius Technologies has demonstrated scalable manufacturing and revolutionary performance in real world applications. The company’s game changing battery is a proven solution for advanced products and mission critical applications.

Delivering 100% Silicon nanowire* batteries today

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. Setting a precedent for scalable silicon anode production, Amprius developed a unique manufacturing process to grow 3D structures in a roll-to-roll system.

Quality assurance

Amprius Technologies employs a customer-focused Quality Management System. The focus on quality and the quality system has been validated through independent certification to ISO 9001.

In demand

Amprius Technologies’ batteries are designed into High Altitude Pseudo Satellites (HAPS), and advanced wearables and drones. Batteries are in development for electric vehicles and robotics. Additionally, the company is scaling production capabilities to meet the growing demand.

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 markets that couldn’t exist without the high density storage capabilities that we provide. The performance of our batteries surpasses all other battery technologies and we are on a trajectory that will take us even further.

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

Chief Operating Officer

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 Quality and 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.


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.


Amprius Technologies is financed by leading venture capital and private equity investors. Some of our investors include: