Iwaki Hard Carbon Plant

Kureha Corporation · Iwaki, Japan · Hard carbon

Anode material plant operated by Kureha Corporation in Iwaki, Japan. Status: operational.

Iwaki Hard Carbon Plant: anode plant illustration with graphitization furnace and spheroidizing mill; Hard carbon, status operational, Japan Hard carbon Operational Japan
Capacity
5.0 kt/yr
Product
Hard carbon powder (Kureha-HC)
Start year
2023
Hub
Supply Chain

Status

Operational: status carried from the legacy record

Product: Hard carbon powder (Kureha-HC). Capacity: 5.0 kt/yr (Legacy figure; not re-verified).

Kureha primary hard carbon for Na-ion batteries; PAN-based synthesis; CATL and HiNa Na-ion customers; only established commercial hard carbon supplier at scale.

Customers and offtakers: CATL (Na-ion) / HiNa / multiple.

Plant record

Plant record

Iwaki Hard Carbon Plant (Kureha Corporation)
CompanyKureha Corporation
PlantIwaki Hard Carbon Plant
CityIwaki
State or provinceFukushima
CountryJapan
Materialhard carbon
ProductHard carbon powder (Kureha-HC)
Capacity (kt/yr)5.0
Capacity basisLegacy figure; not re-verified
Statusoperational
Status noteStatus carried from the legacy record; not re-verified
Scalecommercial
Start year2023
Investment (US$ billion)0.
Customers and offtakersCATL (Na-ion) / HiNa / multiple
Carbon or silicon sourcePetroleum-derived carbon precursor (PAN)
Geopolitical exposureLOW
Record updated2026-10

Official site: kureha.co.jp/en

In context

Where it fits

Listed in Anode Active Materials. Anode plants are compared on route (natural or synthetic graphite, silicon, hard carbon), the step they own (mining, graphitization, spheroidizing, coating), capacity and cell qualification; purification, graphitization and coating are the bottlenecks, not graphite itself.

Other plants of Kureha Corporation and other plants in Japan
PlantCountryStatus
Osaka Hard Carbon Plant (Kuraray)Japanoperational
Anode Material Lines (Mitsubishi Chemical)Japanoperational
Osaka SiOx Anode Plant (Osaka Titanium Technologies)Japanoperational
Graphite Anode Plants (Resonac)Japanoperational
Niigata Si Anode Plant (Shin-Etsu Chemical)Japanoperational
Tokai Synthetic Graphite (Tokai Carbon)Japanoperational
Kashiwazaki SCiB Plant (Toshiba)Japanoperational

Sources

Sources and scope

Scope
Iwaki Hard Carbon Plant (Kureha Corporation)
Sources
ElectronsX anode dataset; company disclosures and filings
Updated
2026-10