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01Reading 2,281 Hours of Stack Durability Data: What to Check Before the Number
The published 2,281-hour galvanostatic window for an HXS-2 23-cell stack in 0.3 M KOH at 40 °C has a full-run linear fit of 80.2 µV/h/cell. This note explains why that number cannot be converted into product lifetime and what to review alongside it.
Read the technical note ↗Coverage written by others
Funding, awards, product launches, interviews and partnerships. Each card opens our summary and the original source.
01HydroXpand selected for D.Camp Batch 6 deep tech cohort
HydroXpand was selected as one of eight deep tech startups in D.Camp Batch 6. The D.Camp Batch program is an accelerator that supports rapid growth and commercialisation for deep tech startups.
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02HydroXpand launches compact hydrogen generation systems for labs and field sites
HydroXpand released the HXB-V1, a 2 kW class AEM water electrolysis system, together with the HXS-2 stack, both intended for laboratory and field demonstration use. The two products generate roughly 500 L of hydrogen per hour and ship with desktop control and monitoring software.
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03KAIST Startup HydroXpand: Proprietary Technology for AEM Water Electrolysis
Just two years after its founding, this AEM water electrolysis startup has already won the Grand Prize at South Korea’s largest startup competition. Monthly Hydrogen Economy visited HydroXpand’s laboratory to examine its proprietary nickel-iron alloy catalyst technology. The article covers HydroXpand’s self-growing anode and highly dispersed cathode technologies, the roadmap from 2 kW stack deliveries to 30 kW scale-up, and its phased market entry from research and demonstration to industrial deployment. CEO Jonghyun Hyun said: "Technical honesty is our highest value. Where something falls short we do not hide it; we share a clear roadmap for resolving it with the customer."
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04HydroXpand Takes the Top Prize at the 'K-Startup Challenge 2025' Grand Final
HydroXpand has won the Grand Prize (Champion of Champions) in the Startup League at ‘K-Startup Challenge 2025,’ the largest-ever competition with a record 7,377 participating teams. The company beat out competition at a ratio of 369 to 1 in South Korea’s largest startup competition, jointly operated by 10 government ministries. HydroXpand received high marks for developing a high-efficiency AEM (Anion Exchange Membrane)-based water electrolysis stack designed to address the high-cost challenges of the electrolysis process. Alongside the KRW 300 million (approx. USD 210,000) prize, the company also receives follow-up support such as preferential evaluation in 2026 government startup support programmes.
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05KAIST Alumni Finally Crack the 'Clean Hydrogen' Dream of Steel Mills and Refineries Worldwide
Chosun Ilbo's The Vivid met with CEO Hyun Jong-hyun following his Grand Prize win at the Chung Ju-yung Startup Competition Climate Tech track. The feature covers everything from the decision to start the company based on AEM electrolyzer research conducted during his KAIST doctoral program, to the milestones of raising KRW 500 million in Seed funding and KRW 1.5 billion in Pre-Series A funding, and surpassing KRW 20 million in monthly recurring revenue (MRR). CEO Hyun stated: "Entrepreneurship is the attitude of solving a problem completely. You must go beyond doing what others do just a little better and move in a direction nobody has taken before."
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06Asan Nanum Foundation Successfully Hosts 2025 Chung Ju-yung Startup Competition Demo Day
HydroXpand won the Grand Prize in the Climate Tech track at the 14th Chung Ju-yung Startup Competition, the largest private-sector startup competition in Korea. Inspired by Hyundai founder Asan Chung Ju-yung's words, "If there is no road, find one; if you cannot find one, make one," the competition distributed a total prize pool of approximately KRW 370 million. Combined with the Grand Prize at the K-Startup Challenge, HydroXpand achieved a "Double Grand Prize" sweep at Korea's two biggest startup competitions. Winners receive residency at the Asan Nanum Foundation's MARU workspace, investor referrals, one-on-one mentoring and corporate partnership benefits worth approximately KRW 1.4 billion.
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07As the Climate Crisis Deepens, Investment Flows to Hydrogen Startups
Unicorn Factory conducted an in-depth feature on HydroXpand's technology and founding story following its Pre-Series A funding. Going beyond the mere investment news, the piece analyzed the challenges facing the hydrogen economy and why AEM electrolyzer technology could be the solution. All three co-founders hold master's and doctoral degrees from KAIST's Department of Chemical and Biomolecular Engineering, and are hydrogen specialists who have published more than 10 papers ranked in the top 1% of JCR journals in hydrogen research. CEO Hyun Jong-hyun emphasized: "Through the technical capability and execution of Korean engineers, we intend to prove that Korean water electrolysis technology can compete on the world stage."
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08HydroXpand Completes Pre-Series A Funding Round
HydroXpand has successfully closed its Pre-Series A investment round. Korea Investment Accelerator, Company K Partners, and IBK Capital joined as new shareholders. The investment will be directed toward advancing the development of anion exchange membrane electrolyzer stacks and scaling the 2 kW module to a 30 kW system. Byun Sang-hoon, analyst at Korea Investment Accelerator, stated: "HydroXpand possesses world-class AEM electrolyzer stack technology with the potential to transition the existing gray hydrogen system to a green hydrogen paradigm, which is why we decided to invest."
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09LG Partners with Startups to Expand Footprint in 'Clean Tech' as Future Growth Engine
HydroXpand has been selected as a clean tech startup for the 3rd cohort of the LG Super Start Incubator. Introduced as a company with "proprietary high-efficiency technology for clean energy hydrogen production," HydroXpand will gain opportunities for Proof of Concept (PoC) validation, collaboration, and advisory sessions with LG affiliates. The company will also receive complimentary office space at the Super Start Lab in the Magok LG Science Park.
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10Dong-A Hwa Sung Signs MOU with HydroXpand for AEM Electrolyzer System Development
Dong-A Hwa Sung and HydroXpand have signed a Memorandum of Understanding (MOU) for the joint development of AEM water electrolysis systems. Both companies plan to collaborate on the co-development and commercialization of systems based on anion exchange membrane electrolyzer technology. By combining HydroXpand's AEM electrolyzer stack expertise with Dong-A Hwa Sung's system capabilities, the two companies aim to accelerate the commercialization of next-generation hydrogen production technology.
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Our industry explainers are currently published in Korean. The blog covers technologies, policy and use cases beyond HydroXpand news.
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