Hydrogen energy storage and hydrogen embrittlement

How does embrittlement degradation affect hydrogen tank storage?

Embrittlement degradation mechanism affects hydrogen tank storage. Hydrogen embrittlement is a widely known phenomenon in high-strength and storage materials. Hydrogen embrittlement is responsible for subcritical crack growth in material, fracture initiation, subsequent loss in mechanical properties, and catastrophic failure.

Are hydrogen embrittlement issues prevailing in hydrogen storage structures and materials?

The embrittlement issues are prevailing in the hydrogen storage structures and materials that interact with hydrogen . To address the challenges of the hydrogen embrittlement on the storage system, surface and structural modifications of the storage material have been performed and several suggestions and results proposed [16, 17].

What is the sensitivity to hydrogen embrittlement in a hydrogen storage tank?

For C concentrations larger than 0.3%, however, sensitivity to hydrogen embrittlement stays constant . Aside from the goal of improving hydrogen storage tank material performance, further research and work are needed to better understand hydrogen storage degradation mechanisms.

How does microstructural modification affect hydrogen storage tank performance?

Hydrogen storage tank is critical in renewable energy. Hydrogen tank performance can be enhanced by appropriate material selection. Microstructural modification reduces the hydrogen embrittlement. Embrittlement degradation mechanism affects hydrogen tank storage.

What is hydrogen embrittlement?

Hydrogen embrittlement is the most well-known effect of hydrogen in high-strength materials, such as steel . It is referred to as the process by which the introduction of a hydrogen atom when working in a hydrogen environment can dramatically lower a material's strength. A substance simultaneously loses ductility and becomes brittle.

How does hydrogen embrittlement affect mechanical properties of materials?

Hydrogen embrittlement (HE) was responsible for mechanical properties degradation of materials. Subcritical crack growth and fracture initiation was occurring due to the effect of hydrogen. SEM and TEM was used for microstructural examination of simple and fractured specimen.