Breaking the barriers of battery technology with silicon
Our silicon anode batteries are shaping a new era of value-driven innovations that improve lives.
What We Do
Delivering the highest energy density battery cells on the market
We manufacture advanced silicon batteries that deliver greater energy and power density, pushing the boundaries of what’s possible — without compromising performance.
Our History
Elevating lives, one battery at a time
By leveraging silicon’s potential, we achieved a performance breakthrough. Today, our patented battery cells power mission-critical systems, and we’re committed to making this technology more accessible to all.
Our partners
We’re energizing purposeful innovation across industries.
Key statistics
Amplified impact
Our dedicated team tirelessly pursues breakthroughs — setting new standards in battery technology.
0%
longer running time
0C
discharge rate
0% in 6 MIN
charge time
-30°C to 0°C
WIDE OPERATING TEMPERATURE
>0 CYCLES
full depth of discharge
Our team
Meet the minds that advance battery technology.
Dr. Kang Sun
Chief Executive Officer & Board Director
Dr. Sun has served as Amprius’ President and Chief Executive Officer since February 2017 and as a director on the Amprius Board...
Sandra Wallach
Chief Financial Officer
Ms. Wallach has served as Amprius’ Chief Financial Officer since August 2021. Prior to joining Amprius, Ms. Wallach served as the Chief...
Tom Stepien
President
Mr. Stepien is President and has served as a director on the Amprius Board since May 2025. He brings more than 35...
Dr. Ionel Stefan
Chief Technology Officer
Dr. Stefan has served as Amprius’ Chief Technology Officer since August 2015. Dr. Stefan is a recognized expert in electrochemistry and energy...
Dr. Weijie Wang
Amprius Technologies Fellow
Dr. Weijie Wang, a pioneer in silicon nanowire anode technology, has played a pivotal role in advancing the capabilities of high-energy density...
Aaron Bakke
General Manager - US Operations
Mr. Bakke oversees Amprius’ domestic manufacturing and operational strategy. He brings deep expertise in quality systems and manufacturing, with extensive experience across...
Ronnie Tao
Vice President of Sales
Mr. Tao is an industry veteran with buyer and supply-side experience along with key strategic development and sales roles. He successfully led...
Andrew Huie
Vice President of Infrastructure
Mr. Huie has served as Amprius’ Vice President of Infrastructure since September 2022, leading the Company’s high-volume manufacturing initiative as it begins...
Siyu Jiang
Vice President of Legal Affairs
Ms. Jiang brings more than a decade of experience in the legal industry to Amprius. For seven years, she was an associate...
Innovators and
go-getters’ playground
Our company culture fosters innovation through teamwork. We’re agile and proactive in adapting to market changes. Our customer-first approach aligns our priorities and resources, promoting collaboration within our organization and with our partners.
Work with Us
Driving change with curiosity
We embrace curiosity and strive for excellence to lead meaningful change.Fueling progress with purpose
We’re motivated to accelerate purposeful progress every day.Powered by integrity
Integrity fuels every decision, action, and relationship.Innovation that energizes us
We’re driven by ideas that inspire and power our mission.Creating the future together
Through internal and external collaborations, we energize the future.Fostering collaboration and trust
Collaboration and trust are core to our culture, driving our success.We're hiring!
Join a team that values collaboration, excellence, and the drive to make an impact.
Work With Us
Let's connect
Discover how silicon anode batteries can boost your application performance.
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