The debate around green hydrogen is often dominated by a recurring promise: making electrolysis cheaper and more competitive. The research developed at the Institute of Physics at the University of Brasília enters this discussion from a more interesting angle than the usual easy narrative. Instead of selling a shortcut, it tackles two real bottlenecks in the sector: the reliance on noble materials such as platinum, and the difficulty of producing thin films with uniformity and repeatability. This is precisely where the project gains relevance.
The technical foundation of the work lies in the development of Automated Mechanical Exfoliation (AME/EMA), a method for depositing thin films of van der Waals two-dimensional materials. According to the thesis associated with the project, the technique enables the production of films with high crystalline quality, uniform morphology, and precise thickness control, characterized using XRD, TEM, SEM, AFM, and Raman. In electrocatalysis applications, these films were used as electrodes for the hydrogen evolution reaction, a central step in water electrolysis.
The most promising aspect lies in the combination of automated deposition and defect engineering through gamma irradiation. In the University of Brasília repository, the reported results for NbS2 films and MoS2/NbS2 heterostructures after irradiation show Tafel slopes of 81 mV/dec and 85 mV/dec, low initial overpotentials, and a significant improvement in catalytic activity. In business terms, this matters because better electrochemical performance can translate into lower energy losses due to overpotential. In technical terms, however, the correct interpretation is more measured: this represents solid scientific progress, not automatic proof of industrial competitiveness.
This caution is essential. The global landscape itself shows that the cost of low-emission hydrogen remains constrained primarily by electricity prices and the total cost of the electrolyzer as a system. The IEA states that the cost gap compared to fossil-based hydrogen remains a central barrier, while IRENA notes that achieving green hydrogen below USD 2.5/kg depends on renewable electricity at around USD 20/MWh or less, in addition to a significant reduction in electrolyzer costs. In other words, a better catalyst helps, but it does not solve the economic equation on its own.
This is precisely why the University of Brasília’s research should be viewed through a more mature lens. Its main merit does not lie in immediately promising cheap green hydrogen at scale. Instead, it targets a less visible but more decisive challenge: the reliable industrialization of nanomaterials. The automation of the deposition process addresses a classic laboratory issue—reproducibility. Without it, strong results remain confined to the bench. With it, at least a plausible pathway opens toward scale, standardization, and future industrial integration.
In practice, the potential impacts are distributed across four fronts:
- Materials: reducing reliance on expensive and scarce metals in the catalytic system.
- Process: increasing uniformity, repeatability, and control in the fabrication of thin films.
- Efficiency: improving the kinetics of the hydrogen evolution reaction under already documented experimental conditions.
- Ecosystem: building local capabilities, infrastructure, and intellectual property in a strategic agenda for Brazil.
The Brazilian institutional context reinforces the relevance of this agenda. The Ministry of Mines and Energy reports that the guidelines of the National Hydrogen Program were launched in 2021, that the PNH2 was established by CNPE Resolution No. 6/2022 and updated by Resolution No. 4/2023. In parallel, Law No. 14,948/2024 established the legal framework for low-emission hydrogen and the corresponding national policy. In other words, the University of Brasília’s research does not emerge in a vacuum. It engages with a regulatory environment that seeks to organize demand, provide predictability, and build a technological foundation for the sector.
It is also not irrelevant that the project was supported by FAPDF with an investment of R$179,000 under the 2022 Open Call for Proposals, within an early-stage technological maturity track. This matters because it distinguishes what already exists from what still needs to be demonstrated. There is funding, there are academic results, there is a patent application, and there is a documented method. What does not yet exist, at least in the public sources consulted, is validation in full electrolyzer systems, extensive durability data, cost per produced area, and testing under conditions close to industrial operation.
This distinction must be clearly stated in any serious analysis. The project is promising because it addresses a critical part of the green hydrogen technology chain. But the correct statement today is not that economic viability has already been solved. The correct statement is different: the University of Brasília has established a relevant scientific platform to reduce material costs, improve reproducibility, and accelerate the transition from the laboratory to more robust energy applications. That alone is significant. And, frankly, it is more valuable than promising a revolution prematurely.
