Ningbo Ronbay New Energy Technology Co Ltd, usually known as Ronbay Technology, is a Chinese company and one of the world's biggest manufacturers of

cathode A cathode is the electrode from which a conventional current leaves a polarized electrical device such as a lead-acid battery. This definition can be recalled by using the mnemonic ''CCD'' for ''Cathode Current Departs''. Conventional curren ...

active material for

lithium-ion batteries A lithium-ion or Li-ion battery is a type of rechargeable battery that uses the reversible intercalation of Li+ ions into electronically conducting solids to store energy. Li-ion batteries are characterized by higher specific energy, energy ...

. Ronbay was founded on September 18, 2014 in

Zunyi Zunyi ( zh, s=遵义 , t=遵義 , p=Zūnyì) is a prefecture-level city in northern Guizhou province, People's Republic of China, situated between the provincial capital Guiyang to the south and Chongqing to the north, also bordering Sichuan to t ...

by Bai Houshan and Liu Xianglie. The company listed on the

Shanghai Stock Exchange STAR Market The Shanghai Stock Exchange STAR Market, officially known as the Shanghai Stock Exchange Science and Technology Innovation Board, is a Chinese science and technology focused equities market established on July 22, 2019. STAR has been touted as ...

on July 22, 2019, the market's first day of operation. As of 2023, the company had a 30% market share in

lithium nickel manganese cobalt oxides Lithium nickel manganese cobalt oxides (abbreviated NMC, Li-NMC, LNMC, or NCM) are mixed metal oxides of lithium, nickel, manganese and cobalt with the general formula LiNi''x''Mn''y''Co''1-x-y''O2. These materials are commonly used in lithium-ion ...

(NMC) with high nickel contents, which are widely used in

electric vehicle An electric vehicle (EV) is a motor vehicle whose propulsion is powered fully or mostly by electricity. EVs encompass a wide range of transportation modes, including road vehicle, road and rail vehicles, electric boats and Submersible, submer ...

s. Ronbay's main production sites are in

Ezhou Ezhou ( zh, s= ) is a prefecture-level city in eastern Hubei Province, China. As of the 2020 census, the city had a population of 1,079,353, of which 695,697 lived in the core Echeng District. The Ezhou - Huanggang built-up (''or metro'') area w ...

Xiantao Xiantao ( zh, s= , p=Xiāntáo) is a sub-prefecture-level city in the east of Hubei province, China. Located at the Jianghan Plain in the middle of Hubei province and spanning 112°55' – 113°49' east longitude and 30°04' – 30°32' north la ...

and

in China, as well as in

Chungju Chungju () is a Administrative divisions of South Korea, city in North Chungcheong Province, South Korea. Uamsan is a mountain located within the outskirts of the city. The city is famous for the annual martial arts festival held in October. Al ...

, South Korea. In 2022, the company began building further production sites in

South Korea South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...

to circumvent U.S. trade restrictions put in place by the

Inflation Reduction Act The Inflation Reduction Act of 2022 (IRA) is a United States federal law which aims to reduce the federal government budget deficit, lower prescription drug prices, and invest in domestic energy production while promoting clean energy. It was ...

. It also announced plans to expand into Indonesia and Poland. In 2024,

LG Chem LG Chem Ltd. ( Korean: LG화학), often referred to as LG Chemical, is the largest Korean chemical company and is headquartered in Seoul, South Korea. It was the 9th largest chemical company in the world by sales in 2021. It was first established ...

sued Ronbay's South Korean subsidiary, Jaesae Neungwon, alleging it had infringed on five of LG Chem's

patent A patent is a type of intellectual property that gives its owner the legal right to exclude others from making, using, or selling an invention for a limited period of time in exchange for publishing an sufficiency of disclosure, enabling discl ...

s for NMC materials.{{Cite web , last=Jae-hyuk , first=Park , date=2024-10-23 , title=LG Chem files patent suit against China's Ronbay , url=https://www.koreatimes.co.kr/www/tech/2024/11/129_384839.html , access-date=2024-11-09 , website=

The Korea Times ''The Korea Times'' () is a daily English-language newspaper in South Korea. It is a sister paper of the ''Hankook Ilbo'', a major Korean language, Korean-language daily. It is the oldest active daily English-language newspaper in South Korea. ...

, language=en

References

Chinese companies established in 2014 Chemical companies established in 2014 Companies listed on the Shanghai Stock Exchange