Carbon One New Energy (Hangzhou) Co., Ltd. is a Chinese manufacturer specializing in advanced anode materials for lithium-ion batteries. The company, part of Carbon One New Energy Group Co., Ltd., was founded in 2021 and is privately held and venture capital-backed, with BYD Company among its investors. It is headquartered in Quzhou, Zhejiang, China.
The company's primary operations involve the manufacturing of lithium battery graphite anode materials. Their product portfolio includes artificial graphite anode, natural graphite anode, silicon-based anode, integrated artificial SEI anode, and anode materials for Na-ion and solid-state batteries. Carbon One New Energy also focuses on integrated artificial SEI-film graphite and silicon-carbon negative electrodes, supported by a vertically integrated production network.
In terms of patent litigation, Carbon One New Energy (Hangzhou) Co., Ltd. is an operating company that currently appears as a defendant in a single tracked case. The lawsuit, Sila Nanotechnologies, Inc. et al. v. Carbon ONE New Energy Group Co., Ltd. et al., was filed in the Texas Eastern District Court on June 18, 2026. [case data]
This notable case involves Sila Nanotechnologies, Inc. asserting U.S. patents related to its foundational silicon-carbon (Si/C) anode technology, marketed as "Titan Silicon." Sila's complaint also includes a parallel action with the U.S. International Trade Commission (ITC), seeking to prevent the unauthorized importation of allegedly infringing Si/C anode materials and downstream products into the U.S.