Term:  2006-2009

http://www.phys.uniroma1.it/DipWeb/HYD/index.html (Website for Task 22 - October 6 - October 10, 2008)

Purpose and Objectives:  The specific goals and objectives for research on hydrogen storage materials in Task 22 are:

• Develop a reversible or regenerative hydrogen storage medium fulfilling international targets for hydrogen storage.

• Develop the fundamental and engineering understanding of hydrogen storage by various hydrogen storage media that have the capability of meeting Target A.

• Develop hydrogen storage materials and systems for use in stationary applications.

Background: 

Hydrogen storage was previously addressed in both IEA HIA Task 12 and Task 17. Task 17, which ended in May 2006, had grown into the largest international co-operation effort on hydrogen ever established. In view of the progress with solid-state H₂-storage under Task 12 and 17, as well as other non-IEA programs, the IEA HIA Executive Committee and its experts decided to create Task 22 to further R&D work in this area. Task 22 started 1^st December 2006 with duration of 3 years. Fifteen members are participating in Task 22.

Description: 

Task 22 addresses hydrogen storage in solid materials. Hydrogen storage is considered by many to be the greatest technological barrier to widespread introduction and use of hydrogen in global energy systems. Currently, no hydrogen storage system, including pressurized and liquefied hydrogen and hydrogen stored in solid compounds known, satisfies international targets for on-board hydrogen storage in mobile applications. This challenge requires new materials and solutions, and not simple, incremental improvements in current technologies.

The following classes of materials are included:

• Reversible metal hydrides
• Regenerative hydrogen storage materials (chemical hydrides)
• Nanoporous materials
• Rechargeable organic liquids and solid

In addition, safety aspects of hydrogen storage in solid materials are also covered.

Task 22 is built on a broad spectrum of the following project types:

• Experimental
• Engineering
• Theoretical
• Modelling

The projects are divided into three categories: hydride (H), Nanoporous (N) and combined Hydride and Nanoporous (HN). A project plan is prepared for each project. At present, Task 22 consists at present of 50 R&D projects lead by project leaders from the participating countries. Most involve international collaboration, which is strongly encouraged. The projects are divided into three categories: Hydride (H), Nanoporous (N) and combined Hydride and Nanoporous (HN). The following is the list of projects approved by the end of 2007.

Progress: 

The Task 22 projects demonstrate continued progress featuring new results and a vigorous international collaboration that is particularly cohesive at the expert level. Significant outcomes include:

• Promising new complex hydrides including different boron-based compounds
• New results on several physisorption systems, such as metal-assisted carbon-materials and microporous organic framework compound
• New results related to AlH₃ as a promising hydrogen storage material
• Simple methods (so-called cold rolling, ECAP, Equal Channel Angular Pressing etc.) for synthesis of Mg-based compounds.