Amprius is a leading Lithium-Ion battery developer.
Amprius's silicon technology was originally developed at Stanford University and enables dramatic improvements in the energy density and specific energy of Lithium-Ion batteries.
Amprius is backed by some of the world’s leading investors, including Trident Capital, VantagePoint Venture Partners, IPV Capital, Kleiner Perkins Caufield & Byers, and Dr. Eric Schmidt.
Employing our patented, silicon nanowire anode, Amprius Technologies provides up to 100% improvement compared to standard lithium-ion batteries.
Aerospace
Amprius Technologies' 100% silicon nanowire* batteries have helped set multiple endurance records.
EVs & Autonomous
Amprius batteries provide more run time and much longer range.
Wearables
Providing 100% silicon nanowire* cells for battery packs, enabling much longer mission time.
THE PROBLEM
Why is battery technology evolving so slowly?
The main reason for the slow pace of battery improvement is chemistry. In conventional lithium-ion batteries the anode is made of carbon in the form of graphite, and graphite has reached its energy density limit.
A new anode material is required to improve battery performance, and that material is silicon. Silicon can store up to 10 times more lithium compared to graphite which enables batteries to have much greater energy. But silicon swells dramatically when it is charged with lithium and that can cause it to crack and stop working.
THE AMPRIUS SOLUTION
Amprius’ 100% silicon nanowire* technology
In 2007, scientists at Stanford University discovered a solution to the swelling problem of silicon anodes. Silicon nanowires were shown to tolerate swell and resist cracking. Amprius has perfected this technology and the result is the world’s first 100% silicon nanowire* anode for lithium-ion batteries.
The 100% silicon nanowire* anode is a direct replacement for graphite anodes. The rest of the battery components and manufacturing methods leverage the established global supply chain for lithium-ion batteries.
Benefits of Using Nanowires
Nanowires tolerate volume expansion and are rooted to the substrate
Nanowires have micro and macro porosity that accommodate swell
Nanowires improve Solid-Electrolyte-Interphase & cycle life
Anode thickness is reduced to half of a graphite electrode thickness
