Production & Supply Chain

Proton exchange membrane electrolytic cells (PEMECs) have the potential to provide green Hydrogen as a sustainable energy source. PEMEC has already been applied at an industrially relevant scale. However it still faces challenges regarding reliability and durability especially in long-term operation. This review emphasizes the need for standardizing the cell configuration the testing protocols and the evaluation procedures to attain the optimum operation Read More

Green hydrogen a critical element in the shift towards sustainable energy is traditionally produced by electrolysis powered by solar photovoltaic (PV) systems. This research explores the potential of underexploited photovoltaic thermal (PV-T) systems for efficient green hydrogen generation. This paper compares this advanced technology performance and economic viability against conventional PV setups. This paper uses TRNSYS simulation software to analyze Read More

The coupling of photovoltaics (PVs) and PEM water electrolyzers (PEMWE) is a promising method for generating hydrogen from a renewable energy source. While direct coupling is feasible the variability of solar radiation presents challenges in efcient sizing. This study proposes an innovative energy management strategy that ensures a stable hydrogen production rate even with fuctuating solar irradiation. By integrating battery-assisted hydrogen productio Read More

Green hydrogen produced by water electrolysis using renewable energy sources (RES) is an emerging technology that aligns with sustainable development goals and efforts to address climate change. In addition to energy electrolyzers require ultrapure water to operate. Although seawater is abundant on the Earth it must be desalinated and further purified to meet the electrolyzer’s feeding water quality requirements. This paper reviews seawater purifi Read More

LNG carriers play a crucial role in the shipping industry meeting the global demand for natural gas (NG). However the energy losses resulting from the propulsion system and the excess boil-off gas (BOG) cannot be overlooked. The present article investigates the H2 production on board LNG carriers employing both the engine's waste heat (WH) and the excess BOG. Conventional (ORC) and dual-pressure (2P-ORC) organic Rankine cycles couple Read More

Proton exchange membrane (PEM) electrolyser stands as a promising candidate for sustainable hydrogen pro duction from renewable energy sources (RESs). Given the fluctuating nature of RESs accurate modelling of the PEM electrolyser is crucial. Nonetheless complex models of the PEM electrolyser demand substantial time and resource investments when integrating them into a large-scale power system. The majority of introduced models in Read More

Proton exchange membrane water electrolyzer (PEMWE) represents a promising technology for the sustainable production of hydrogen which is capable of efficiently coupling to intermittent electricity from renewable energy sources (e.g. solar and wind). The technology with compact stack structure has many notable advantages including large current density high hydrogen purity and great conversion efficiency. However the use of expensive electrocat Read More

This study performs a cradle-to-grave life cycle assessment of a 5 MW protonexchange membrane water electrolysis plant. The analysis follows a thoroughengineering-based bottom-up design based on the electrochemical model of thesystem. Three scenarios are analyzed comprising a state-of-the-art (SoA) plantoperated with the German electricity grid-mix a SoA plant operated with acompletely decarbonized energy system and a future develo Read More

Hydrogen crossover limits the load range of alkaline water electrolyzers hindering their integration with renewable energy. This study examines the impact of the electrode-diaphragm gap on crossover focusing on diffusive transport. Both finite-gap and zero-gap designs employing the state-of-the-art Zirfon UTP Perl 500 and UTP 220 diaphragms were investigated at room temperature and with a 12 wt% KOH electrolyte. Experimental results reveal a relati Read More

The global shift toward sustainable energy solutions emphasises the urgent need to harness renewable sources for green hydrogen production presenting a critical opportunity in the transition to a low-carbon economy. Despite its potential integrating renewable energy with electrolysis to produce green hydrogen faces significant technological and economic challenges particularly in achieving high efficiency and cost-effectiveness at scale. This review syste Read More