Hydrogen Fuel Cells (PEM and SOFC): Companies, Startups and Research

Toyota Motor Corporation, Hyundai Motor Company, Ballard Power Systems, Plug Power and Bloom Energy are among the active companies. Toyota and Hyundai develop PEM fuel-cell systems for vehicles, while Ballard works on PEM stacks for transport and stationary power. Bloom Energy is associated with oxide-ion SOFCs, including stationary power applications.

Symbio, Zeroavia and Blue World Technologies Aps are identified as startups working on PEM fuel-cell technology. Symbio develops stacks for heavy-duty mobility and stationary power; Zeroavia focuses on hydrogen-electric aircraft powertrains; and Blue World Technologies develops high-temperature PEM systems, including technology suited to methanol reforming. These are examples, not a performance ranking.

Xi'an Jiaotong University, Tongji University and the Chinese Academy of Sciences CAS are among the leading research organizations in the recent profile. Their listed work includes 317, 287 and 307 publications, respectively, in their recent activity records. Research areas include PEMFC cold-start strategies, catalysts, membranes and durability.

Reported grants total $1.888 billion across 445 awards since 2020, and 25 reported funding rounds total $20.896 billion. These are separate funding categories in the available data. Round records include financing for major organizations and projects, so the round total should not be read as a measure of dedicated fuel-cell R&D investment.

Robert Bosch GmbH leads the listed patent holders with 117 patents, followed by Bloom Energy with 51. Hyundai Motor Company and Volvo Truck Australia each have 39, while Kubota Corporation has 34. These counts identify the leading holders in the available patent profile; they do not indicate the commercial value or technical quality of each patent.

No: patent activity declined 44.9% in the latest 12 months compared with the previous 12 months. The 24-month patent window contains 1,528 patents. Publication activity also declined, by 9.8% over the comparable 12-month periods, while recent technical work continues on catalysts, membranes, stack control and system integration.

In September 2026, a Beijing Institute of Technology team reported a redesigned catalyst interface that it said quadrupled PEM fuel-cell power output. Recent publications also address metallic-foam flow fields, AI-based temperature optimization, humidity modeling and cold-start strategies. In April 2026, a feature highlighted reversible solid oxide cells as a route to both electricity generation and hydrogen production.

PEMFCs use a polymer membrane and suit responsive, lower-temperature applications, while oxide-ion SOFCs use a ceramic electrolyte and operate at higher temperatures with broader fuel flexibility. Protonic ceramic cells use a proton-conducting ceramic, aiming to combine solid-oxide operation with lower temperatures. Reversible solid oxide cells can switch between fuel-cell and electrolysis modes, with durability across both modes a key challenge.

The United States leads the listed countries with 44,389 documents, followed by China with 30,787 and Germany with 17,407. Japan has 15,699 documents and the United Kingdom has 14,305. These figures show where activity is concentrated in the dataset, rather than measuring deployment or market share.

The listed applications are road transport, stationary power, maritime, and aviation and UAVs. Road transport is associated with Toyota Motor Corporation, Hyundai Motor Company and Ballard Power Systems; Bloom Energy and Plug Power appear in stationary power. Maritime and aviation activity includes companies and organizations such as Ballard Power Systems, Airbus and Beihang University.