Media contact
Our CEO, Jonghyun Hyun, is available for interviews on the subjects listed below.
Boilerplate
Three lengths, kept current. Copy whichever one fits your piece.
HydroXpand is a South Korean manufacturer of anion exchange membrane (AEM) water electrolysis electrodes, cells, stacks and systems.
HydroXpand Co., Ltd. is a South Korean manufacturer of anion exchange membrane (AEM) water electrolysis products. Founded in December 2023 by three hydrogen researchers from KAIST, it makes iridium-free anodes, low-PGM cathodes, test cells, 2 kW and 30 kW stacks, and a turnkey 2 kW system. It supplies more than 70 customers in over 10 countries.
HydroXpand Co., Ltd. is a South Korean manufacturer of anion exchange membrane (AEM) water electrolysis products, founded in December 2023 by three hydrogen researchers from KAIST. The company works on what makes clean hydrogen expensive: cell voltage, degradation rate, stack cost and output per stack. Its anode grows NiFe layered double hydroxide directly on nickel foam and uses no iridium. The product line runs from single electrodes and 1 to 25 cm² test cells through the 2 kW HXS-2 stack, which has more than 3,000 hours of cumulative operation, to the 30 kW HXS-30 46-cell full stack, available now. HydroXpand supplies more than 70 customers in over 10 countries from its plant in Hwaseong, Gyeonggi.
Fast facts
| Legal name | HydroXpand Co., Ltd. (주식회사 하이드로엑스팬드) |
|---|---|
| Founded | December 2023 |
| CEO | Jonghyun Hyun |
| Employees | 10 |
| Customers | 70+ customers in 10+ countries |
| Registered office | Jinri Hall, KAIST Munji Campus, 193 Munji-ro, Yuseong-gu, Daejeon 34051, Republic of Korea |
| Plant | Dongtan Industrial Complex, Hwaseong-si, Gyeonggi-do, Republic of Korea |
| Business registration | 530-81-03297 |
| Technology | AEM water electrolysis. NiFe-LDH anode grown on nickel foam, no iridium. Pt/C or PtRu/C cathode at 0.2 mgPGM/cm². |
| Conformity | HXB-V1 carries a CE self-declaration of conformity (LVD, EMC, RoHS). This is a self-declaration, not third-party certification. |
Products
| Model | What it is | From PO acceptance |
|---|---|---|
| HXP-anAnode | NiFe-LDH on nickel foam, iridium-free. 200 × 300 mm and 100 × 100 mm. | 2 weeks |
| HXP-caCathode | Pt/C or PtRu/C on carbon paper at 0.2 mgPGM/cm². | 2 weeks |
| HXS-0Test cell | Active area 1 to 25 cm², one cell up to a 20-cell short stack. | 4 weeks |
| HXS-22 kW stack | 23 cells, 480 NL/h (1 kg/day), up to 10 barg. 3,000+ hours of cumulative operation. | 4 weeks |
| HXS-3030 kW stack | 46 cells, 6,900 NL/h (15 kg/day design), up to 10 barg. First operation completed. | On request |
| HXB-V12 kW system | Stack, power, circulation, gas separation and safety in one 19-inch 6U rack. | 8 weeks |
Datasheets for all six download without a form from Resources. Every performance figure on this site is published with the conditions it was measured under.
Logos
Please do not recolour, stretch or add effects to the logo.
ColourSVGOn light backgrounds
WhiteSVGOn dark or photo backgrounds
Mono whiteSVGSingle colour, for print or one-colour placementsHydroXpand Navy
#0a2240HydroXpand Blue #0073ceImages
Free to use in coverage of HydroXpand with the credit "HydroXpand". For a higher resolution file, a photo we have not published, or an image of a specific part, write to [email protected].
What we can speak about
We are happy to comment on record, including on questions where the honest answer is that we do not know yet.
- Where AEM sits against alkaline and PEM, and what each trade-off costs in practice
- Iridium and platinum group metal supply, and what removing iridium does and does not solve
- How stack durability is actually measured, and what a published hour count does not tell you
- What breaks when a cell design is scaled from the laboratory to a 30 kW stack
- What integrators get wrong when they build their own balance of plant around a bare stack
Elsewhere
Last updated: 2026-09-13